blob: 1e5eb9f2ff5fab66fe8d8041aef5673f7fd2528a [file] [log] [blame]
Kyle Swenson8d8f6542021-03-15 11:02:55 -06001/*
2 * boot.c - Architecture-Specific Low-Level ACPI Boot Support
3 *
4 * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
5 * Copyright (C) 2001 Jun Nakajima <jun.nakajima@intel.com>
6 *
7 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 *
23 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
24 */
25
26#include <linux/init.h>
27#include <linux/acpi.h>
28#include <linux/acpi_pmtmr.h>
29#include <linux/efi.h>
30#include <linux/cpumask.h>
31#include <linux/module.h>
32#include <linux/dmi.h>
33#include <linux/irq.h>
34#include <linux/slab.h>
35#include <linux/bootmem.h>
36#include <linux/ioport.h>
37#include <linux/pci.h>
38
39#include <asm/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 */
50static int __initdata acpi_force = 0;
51int acpi_disabled;
52EXPORT_SYMBOL(acpi_disabled);
53
54#ifdef CONFIG_X86_64
55# include <asm/proto.h>
56#endif /* X86 */
57
58#define PREFIX "ACPI: "
59
60int acpi_noirq; /* skip ACPI IRQ initialization */
61int acpi_pci_disabled; /* skip ACPI PCI scan and IRQ initialization */
62EXPORT_SYMBOL(acpi_pci_disabled);
63
64int acpi_lapic;
65int acpi_ioapic;
66int acpi_strict;
67int acpi_disable_cmcff;
68
69u8 acpi_sci_flags __initdata;
70int acpi_sci_override_gsi __initdata;
71int acpi_skip_timer_override __initdata;
72int acpi_use_timer_override __initdata;
73int acpi_fix_pin2_polarity __initdata;
74
75#ifdef CONFIG_X86_LOCAL_APIC
76static 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 */
90static 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 */
100enum 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 */
107static 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 */
117char *__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
126void __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
135static 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 */
168static 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
188static int __init
189acpi_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
223static int __init
224acpi_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
248static int __init
249acpi_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
266static int __init
267acpi_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
282static int __init
283acpi_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
301static int __init
302acpi_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
324static 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 * Check bus_irq boundary.
333 */
334 if (bus_irq >= NR_IRQS_LEGACY) {
335 pr_warn("Invalid bus_irq %u for legacy override\n", bus_irq);
336 return;
337 }
338
339 /*
340 * Convert 'gsi' to 'ioapic.pin'.
341 */
342 ioapic = mp_find_ioapic(gsi);
343 if (ioapic < 0)
344 return;
345 pin = mp_find_ioapic_pin(ioapic, gsi);
346
347 /*
348 * TBD: This check is for faulty timer entries, where the override
349 * erroneously sets the trigger to level, resulting in a HUGE
350 * increase of timer interrupts!
351 */
352 if ((bus_irq == 0) && (trigger == 3))
353 trigger = 1;
354
355 mp_irq.type = MP_INTSRC;
356 mp_irq.irqtype = mp_INT;
357 mp_irq.irqflag = (trigger << 2) | polarity;
358 mp_irq.srcbus = MP_ISA_BUS;
359 mp_irq.srcbusirq = bus_irq; /* IRQ */
360 mp_irq.dstapic = mpc_ioapic_id(ioapic); /* APIC ID */
361 mp_irq.dstirq = pin; /* INTIN# */
362
363 mp_save_irq(&mp_irq);
364
365 /*
366 * Reset default identity mapping if gsi is also an legacy IRQ,
367 * otherwise there will be more than one entry with the same GSI
368 * and acpi_isa_irq_to_gsi() may give wrong result.
369 */
370 if (gsi < nr_legacy_irqs() && isa_irq_to_gsi[gsi] == gsi)
371 isa_irq_to_gsi[gsi] = ACPI_INVALID_GSI;
372 isa_irq_to_gsi[bus_irq] = gsi;
373}
374
375static int mp_config_acpi_gsi(struct device *dev, u32 gsi, int trigger,
376 int polarity)
377{
378#ifdef CONFIG_X86_MPPARSE
379 struct mpc_intsrc mp_irq;
380 struct pci_dev *pdev;
381 unsigned char number;
382 unsigned int devfn;
383 int ioapic;
384 u8 pin;
385
386 if (!acpi_ioapic)
387 return 0;
388 if (!dev || !dev_is_pci(dev))
389 return 0;
390
391 pdev = to_pci_dev(dev);
392 number = pdev->bus->number;
393 devfn = pdev->devfn;
394 pin = pdev->pin;
395 /* print the entry should happen on mptable identically */
396 mp_irq.type = MP_INTSRC;
397 mp_irq.irqtype = mp_INT;
398 mp_irq.irqflag = (trigger == ACPI_EDGE_SENSITIVE ? 4 : 0x0c) |
399 (polarity == ACPI_ACTIVE_HIGH ? 1 : 3);
400 mp_irq.srcbus = number;
401 mp_irq.srcbusirq = (((devfn >> 3) & 0x1f) << 2) | ((pin - 1) & 3);
402 ioapic = mp_find_ioapic(gsi);
403 mp_irq.dstapic = mpc_ioapic_id(ioapic);
404 mp_irq.dstirq = mp_find_ioapic_pin(ioapic, gsi);
405
406 mp_save_irq(&mp_irq);
407#endif
408 return 0;
409}
410
411static int __init
412acpi_parse_ioapic(struct acpi_subtable_header * header, const unsigned long end)
413{
414 struct acpi_madt_io_apic *ioapic = NULL;
415 struct ioapic_domain_cfg cfg = {
416 .type = IOAPIC_DOMAIN_DYNAMIC,
417 .ops = &mp_ioapic_irqdomain_ops,
418 };
419
420 ioapic = (struct acpi_madt_io_apic *)header;
421
422 if (BAD_MADT_ENTRY(ioapic, end))
423 return -EINVAL;
424
425 acpi_table_print_madt_entry(header);
426
427 /* Statically assign IRQ numbers for IOAPICs hosting legacy IRQs */
428 if (ioapic->global_irq_base < nr_legacy_irqs())
429 cfg.type = IOAPIC_DOMAIN_LEGACY;
430
431 mp_register_ioapic(ioapic->id, ioapic->address, ioapic->global_irq_base,
432 &cfg);
433
434 return 0;
435}
436
437/*
438 * Parse Interrupt Source Override for the ACPI SCI
439 */
440static void __init acpi_sci_ioapic_setup(u8 bus_irq, u16 polarity, u16 trigger, u32 gsi)
441{
442 if (trigger == 0) /* compatible SCI trigger is level */
443 trigger = 3;
444
445 if (polarity == 0) /* compatible SCI polarity is low */
446 polarity = 3;
447
448 /* Command-line over-ride via acpi_sci= */
449 if (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK)
450 trigger = (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) >> 2;
451
452 if (acpi_sci_flags & ACPI_MADT_POLARITY_MASK)
453 polarity = acpi_sci_flags & ACPI_MADT_POLARITY_MASK;
454
455 mp_override_legacy_irq(bus_irq, polarity, trigger, gsi);
456 acpi_penalize_sci_irq(bus_irq, trigger, polarity);
457
458 /*
459 * stash over-ride to indicate we've been here
460 * and for later update of acpi_gbl_FADT
461 */
462 acpi_sci_override_gsi = gsi;
463 return;
464}
465
466static int __init
467acpi_parse_int_src_ovr(struct acpi_subtable_header * header,
468 const unsigned long end)
469{
470 struct acpi_madt_interrupt_override *intsrc = NULL;
471
472 intsrc = (struct acpi_madt_interrupt_override *)header;
473
474 if (BAD_MADT_ENTRY(intsrc, end))
475 return -EINVAL;
476
477 acpi_table_print_madt_entry(header);
478
479 if (intsrc->source_irq == acpi_gbl_FADT.sci_interrupt) {
480 acpi_sci_ioapic_setup(intsrc->source_irq,
481 intsrc->inti_flags & ACPI_MADT_POLARITY_MASK,
482 (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2,
483 intsrc->global_irq);
484 return 0;
485 }
486
487 if (intsrc->source_irq == 0) {
488 if (acpi_skip_timer_override) {
489 printk(PREFIX "BIOS IRQ0 override ignored.\n");
490 return 0;
491 }
492
493 if ((intsrc->global_irq == 2) && acpi_fix_pin2_polarity
494 && (intsrc->inti_flags & ACPI_MADT_POLARITY_MASK)) {
495 intsrc->inti_flags &= ~ACPI_MADT_POLARITY_MASK;
496 printk(PREFIX "BIOS IRQ0 pin2 override: forcing polarity to high active.\n");
497 }
498 }
499
500 mp_override_legacy_irq(intsrc->source_irq,
501 intsrc->inti_flags & ACPI_MADT_POLARITY_MASK,
502 (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2,
503 intsrc->global_irq);
504
505 return 0;
506}
507
508static int __init
509acpi_parse_nmi_src(struct acpi_subtable_header * header, const unsigned long end)
510{
511 struct acpi_madt_nmi_source *nmi_src = NULL;
512
513 nmi_src = (struct acpi_madt_nmi_source *)header;
514
515 if (BAD_MADT_ENTRY(nmi_src, end))
516 return -EINVAL;
517
518 acpi_table_print_madt_entry(header);
519
520 /* TBD: Support nimsrc entries? */
521
522 return 0;
523}
524
525#endif /* CONFIG_X86_IO_APIC */
526
527/*
528 * acpi_pic_sci_set_trigger()
529 *
530 * use ELCR to set PIC-mode trigger type for SCI
531 *
532 * If a PIC-mode SCI is not recognized or gives spurious IRQ7's
533 * it may require Edge Trigger -- use "acpi_sci=edge"
534 *
535 * Port 0x4d0-4d1 are ECLR1 and ECLR2, the Edge/Level Control Registers
536 * for the 8259 PIC. bit[n] = 1 means irq[n] is Level, otherwise Edge.
537 * ECLR1 is IRQs 0-7 (IRQ 0, 1, 2 must be 0)
538 * ECLR2 is IRQs 8-15 (IRQ 8, 13 must be 0)
539 */
540
541void __init acpi_pic_sci_set_trigger(unsigned int irq, u16 trigger)
542{
543 unsigned int mask = 1 << irq;
544 unsigned int old, new;
545
546 /* Real old ELCR mask */
547 old = inb(0x4d0) | (inb(0x4d1) << 8);
548
549 /*
550 * If we use ACPI to set PCI IRQs, then we should clear ELCR
551 * since we will set it correctly as we enable the PCI irq
552 * routing.
553 */
554 new = acpi_noirq ? old : 0;
555
556 /*
557 * Update SCI information in the ELCR, it isn't in the PCI
558 * routing tables..
559 */
560 switch (trigger) {
561 case 1: /* Edge - clear */
562 new &= ~mask;
563 break;
564 case 3: /* Level - set */
565 new |= mask;
566 break;
567 }
568
569 if (old == new)
570 return;
571
572 printk(PREFIX "setting ELCR to %04x (from %04x)\n", new, old);
573 outb(new, 0x4d0);
574 outb(new >> 8, 0x4d1);
575}
576
577int acpi_gsi_to_irq(u32 gsi, unsigned int *irqp)
578{
579 int rc, irq, trigger, polarity;
580
581 if (acpi_irq_model == ACPI_IRQ_MODEL_PIC) {
582 *irqp = gsi;
583 return 0;
584 }
585
586 rc = acpi_get_override_irq(gsi, &trigger, &polarity);
587 if (rc == 0) {
588 trigger = trigger ? ACPI_LEVEL_SENSITIVE : ACPI_EDGE_SENSITIVE;
589 polarity = polarity ? ACPI_ACTIVE_LOW : ACPI_ACTIVE_HIGH;
590 irq = acpi_register_gsi(NULL, gsi, trigger, polarity);
591 if (irq >= 0) {
592 *irqp = irq;
593 return 0;
594 }
595 }
596
597 return -1;
598}
599EXPORT_SYMBOL_GPL(acpi_gsi_to_irq);
600
601int acpi_isa_irq_to_gsi(unsigned isa_irq, u32 *gsi)
602{
603 if (isa_irq < nr_legacy_irqs() &&
604 isa_irq_to_gsi[isa_irq] != ACPI_INVALID_GSI) {
605 *gsi = isa_irq_to_gsi[isa_irq];
606 return 0;
607 }
608
609 return -1;
610}
611
612static int acpi_register_gsi_pic(struct device *dev, u32 gsi,
613 int trigger, int polarity)
614{
615#ifdef CONFIG_PCI
616 /*
617 * Make sure all (legacy) PCI IRQs are set as level-triggered.
618 */
619 if (trigger == ACPI_LEVEL_SENSITIVE)
620 elcr_set_level_irq(gsi);
621#endif
622
623 return gsi;
624}
625
626#ifdef CONFIG_X86_LOCAL_APIC
627static int acpi_register_gsi_ioapic(struct device *dev, u32 gsi,
628 int trigger, int polarity)
629{
630 int irq = gsi;
631#ifdef CONFIG_X86_IO_APIC
632 int node;
633 struct irq_alloc_info info;
634
635 node = dev ? dev_to_node(dev) : NUMA_NO_NODE;
636 trigger = trigger == ACPI_EDGE_SENSITIVE ? 0 : 1;
637 polarity = polarity == ACPI_ACTIVE_HIGH ? 0 : 1;
638 ioapic_set_alloc_attr(&info, node, trigger, polarity);
639
640 mutex_lock(&acpi_ioapic_lock);
641 irq = mp_map_gsi_to_irq(gsi, IOAPIC_MAP_ALLOC, &info);
642 /* Don't set up the ACPI SCI because it's already set up */
643 if (irq >= 0 && enable_update_mptable &&
644 acpi_gbl_FADT.sci_interrupt != gsi)
645 mp_config_acpi_gsi(dev, gsi, trigger, polarity);
646 mutex_unlock(&acpi_ioapic_lock);
647#endif
648
649 return irq;
650}
651
652static void acpi_unregister_gsi_ioapic(u32 gsi)
653{
654#ifdef CONFIG_X86_IO_APIC
655 int irq;
656
657 mutex_lock(&acpi_ioapic_lock);
658 irq = mp_map_gsi_to_irq(gsi, 0, NULL);
659 if (irq > 0)
660 mp_unmap_irq(irq);
661 mutex_unlock(&acpi_ioapic_lock);
662#endif
663}
664#endif
665
666int (*__acpi_register_gsi)(struct device *dev, u32 gsi,
667 int trigger, int polarity) = acpi_register_gsi_pic;
668void (*__acpi_unregister_gsi)(u32 gsi) = NULL;
669
670#ifdef CONFIG_ACPI_SLEEP
671int (*acpi_suspend_lowlevel)(void) = x86_acpi_suspend_lowlevel;
672#else
673int (*acpi_suspend_lowlevel)(void);
674#endif
675
676/*
677 * success: return IRQ number (>=0)
678 * failure: return < 0
679 */
680int acpi_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity)
681{
682 return __acpi_register_gsi(dev, gsi, trigger, polarity);
683}
684EXPORT_SYMBOL_GPL(acpi_register_gsi);
685
686void acpi_unregister_gsi(u32 gsi)
687{
688 if (__acpi_unregister_gsi)
689 __acpi_unregister_gsi(gsi);
690}
691EXPORT_SYMBOL_GPL(acpi_unregister_gsi);
692
693#ifdef CONFIG_X86_LOCAL_APIC
694static void __init acpi_set_irq_model_ioapic(void)
695{
696 acpi_irq_model = ACPI_IRQ_MODEL_IOAPIC;
697 __acpi_register_gsi = acpi_register_gsi_ioapic;
698 __acpi_unregister_gsi = acpi_unregister_gsi_ioapic;
699 acpi_ioapic = 1;
700}
701#endif
702
703/*
704 * ACPI based hotplug support for CPU
705 */
706#ifdef CONFIG_ACPI_HOTPLUG_CPU
707#include <acpi/processor.h>
708
709static void acpi_map_cpu2node(acpi_handle handle, int cpu, int physid)
710{
711#ifdef CONFIG_ACPI_NUMA
712 int nid;
713
714 nid = acpi_get_node(handle);
715 if (nid != -1) {
716 set_apicid_to_node(physid, nid);
717 numa_set_node(cpu, nid);
718 }
719#endif
720}
721
722int acpi_map_cpu(acpi_handle handle, phys_cpuid_t physid, int *pcpu)
723{
724 int cpu;
725
726 cpu = acpi_register_lapic(physid, ACPI_MADT_ENABLED);
727 if (cpu < 0) {
728 pr_info(PREFIX "Unable to map lapic to logical cpu number\n");
729 return cpu;
730 }
731
732 acpi_processor_set_pdc(handle);
733 acpi_map_cpu2node(handle, cpu, physid);
734
735 *pcpu = cpu;
736 return 0;
737}
738EXPORT_SYMBOL(acpi_map_cpu);
739
740int acpi_unmap_cpu(int cpu)
741{
742#ifdef CONFIG_ACPI_NUMA
743 set_apicid_to_node(per_cpu(x86_cpu_to_apicid, cpu), NUMA_NO_NODE);
744#endif
745
746 per_cpu(x86_cpu_to_apicid, cpu) = -1;
747 set_cpu_present(cpu, false);
748 num_processors--;
749
750 return (0);
751}
752EXPORT_SYMBOL(acpi_unmap_cpu);
753#endif /* CONFIG_ACPI_HOTPLUG_CPU */
754
755int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base)
756{
757 int ret = -ENOSYS;
758#ifdef CONFIG_ACPI_HOTPLUG_IOAPIC
759 int ioapic_id;
760 u64 addr;
761 struct ioapic_domain_cfg cfg = {
762 .type = IOAPIC_DOMAIN_DYNAMIC,
763 .ops = &mp_ioapic_irqdomain_ops,
764 };
765
766 ioapic_id = acpi_get_ioapic_id(handle, gsi_base, &addr);
767 if (ioapic_id < 0) {
768 unsigned long long uid;
769 acpi_status status;
770
771 status = acpi_evaluate_integer(handle, METHOD_NAME__UID,
772 NULL, &uid);
773 if (ACPI_FAILURE(status)) {
774 acpi_handle_warn(handle, "failed to get IOAPIC ID.\n");
775 return -EINVAL;
776 }
777 ioapic_id = (int)uid;
778 }
779
780 mutex_lock(&acpi_ioapic_lock);
781 ret = mp_register_ioapic(ioapic_id, phys_addr, gsi_base, &cfg);
782 mutex_unlock(&acpi_ioapic_lock);
783#endif
784
785 return ret;
786}
787EXPORT_SYMBOL(acpi_register_ioapic);
788
789int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base)
790{
791 int ret = -ENOSYS;
792
793#ifdef CONFIG_ACPI_HOTPLUG_IOAPIC
794 mutex_lock(&acpi_ioapic_lock);
795 ret = mp_unregister_ioapic(gsi_base);
796 mutex_unlock(&acpi_ioapic_lock);
797#endif
798
799 return ret;
800}
801EXPORT_SYMBOL(acpi_unregister_ioapic);
802
803/**
804 * acpi_ioapic_registered - Check whether IOAPIC assoicatied with @gsi_base
805 * has been registered
806 * @handle: ACPI handle of the IOAPIC deivce
807 * @gsi_base: GSI base associated with the IOAPIC
808 *
809 * Assume caller holds some type of lock to serialize acpi_ioapic_registered()
810 * with acpi_register_ioapic()/acpi_unregister_ioapic().
811 */
812int acpi_ioapic_registered(acpi_handle handle, u32 gsi_base)
813{
814 int ret = 0;
815
816#ifdef CONFIG_ACPI_HOTPLUG_IOAPIC
817 mutex_lock(&acpi_ioapic_lock);
818 ret = mp_ioapic_registered(gsi_base);
819 mutex_unlock(&acpi_ioapic_lock);
820#endif
821
822 return ret;
823}
824
825static int __init acpi_parse_sbf(struct acpi_table_header *table)
826{
827 struct acpi_table_boot *sb = (struct acpi_table_boot *)table;
828
829 sbf_port = sb->cmos_index; /* Save CMOS port */
830
831 return 0;
832}
833
834#ifdef CONFIG_HPET_TIMER
835#include <asm/hpet.h>
836
837static struct resource *hpet_res __initdata;
838
839static int __init acpi_parse_hpet(struct acpi_table_header *table)
840{
841 struct acpi_table_hpet *hpet_tbl = (struct acpi_table_hpet *)table;
842
843 if (hpet_tbl->address.space_id != ACPI_SPACE_MEM) {
844 printk(KERN_WARNING PREFIX "HPET timers must be located in "
845 "memory.\n");
846 return -1;
847 }
848
849 hpet_address = hpet_tbl->address.address;
850 hpet_blockid = hpet_tbl->sequence;
851
852 /*
853 * Some broken BIOSes advertise HPET at 0x0. We really do not
854 * want to allocate a resource there.
855 */
856 if (!hpet_address) {
857 printk(KERN_WARNING PREFIX
858 "HPET id: %#x base: %#lx is invalid\n",
859 hpet_tbl->id, hpet_address);
860 return 0;
861 }
862#ifdef CONFIG_X86_64
863 /*
864 * Some even more broken BIOSes advertise HPET at
865 * 0xfed0000000000000 instead of 0xfed00000. Fix it up and add
866 * some noise:
867 */
868 if (hpet_address == 0xfed0000000000000UL) {
869 if (!hpet_force_user) {
870 printk(KERN_WARNING PREFIX "HPET id: %#x "
871 "base: 0xfed0000000000000 is bogus\n "
872 "try hpet=force on the kernel command line to "
873 "fix it up to 0xfed00000.\n", hpet_tbl->id);
874 hpet_address = 0;
875 return 0;
876 }
877 printk(KERN_WARNING PREFIX
878 "HPET id: %#x base: 0xfed0000000000000 fixed up "
879 "to 0xfed00000.\n", hpet_tbl->id);
880 hpet_address >>= 32;
881 }
882#endif
883 printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n",
884 hpet_tbl->id, hpet_address);
885
886 /*
887 * Allocate and initialize the HPET firmware resource for adding into
888 * the resource tree during the lateinit timeframe.
889 */
890#define HPET_RESOURCE_NAME_SIZE 9
891 hpet_res = alloc_bootmem(sizeof(*hpet_res) + HPET_RESOURCE_NAME_SIZE);
892
893 hpet_res->name = (void *)&hpet_res[1];
894 hpet_res->flags = IORESOURCE_MEM;
895 snprintf((char *)hpet_res->name, HPET_RESOURCE_NAME_SIZE, "HPET %u",
896 hpet_tbl->sequence);
897
898 hpet_res->start = hpet_address;
899 hpet_res->end = hpet_address + (1 * 1024) - 1;
900
901 return 0;
902}
903
904/*
905 * hpet_insert_resource inserts the HPET resources used into the resource
906 * tree.
907 */
908static __init int hpet_insert_resource(void)
909{
910 if (!hpet_res)
911 return 1;
912
913 return insert_resource(&iomem_resource, hpet_res);
914}
915
916late_initcall(hpet_insert_resource);
917
918#else
919#define acpi_parse_hpet NULL
920#endif
921
922static int __init acpi_parse_fadt(struct acpi_table_header *table)
923{
924
925#ifdef CONFIG_X86_PM_TIMER
926 /* detect the location of the ACPI PM Timer */
927 if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID) {
928 /* FADT rev. 2 */
929 if (acpi_gbl_FADT.xpm_timer_block.space_id !=
930 ACPI_ADR_SPACE_SYSTEM_IO)
931 return 0;
932
933 pmtmr_ioport = acpi_gbl_FADT.xpm_timer_block.address;
934 /*
935 * "X" fields are optional extensions to the original V1.0
936 * fields, so we must selectively expand V1.0 fields if the
937 * corresponding X field is zero.
938 */
939 if (!pmtmr_ioport)
940 pmtmr_ioport = acpi_gbl_FADT.pm_timer_block;
941 } else {
942 /* FADT rev. 1 */
943 pmtmr_ioport = acpi_gbl_FADT.pm_timer_block;
944 }
945 if (pmtmr_ioport)
946 printk(KERN_INFO PREFIX "PM-Timer IO Port: %#x\n",
947 pmtmr_ioport);
948#endif
949 return 0;
950}
951
952#ifdef CONFIG_X86_LOCAL_APIC
953/*
954 * Parse LAPIC entries in MADT
955 * returns 0 on success, < 0 on error
956 */
957
958static int __init early_acpi_parse_madt_lapic_addr_ovr(void)
959{
960 int count;
961
962 if (!cpu_has_apic)
963 return -ENODEV;
964
965 /*
966 * Note that the LAPIC address is obtained from the MADT (32-bit value)
967 * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value).
968 */
969
970 count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE,
971 acpi_parse_lapic_addr_ovr, 0);
972 if (count < 0) {
973 printk(KERN_ERR PREFIX
974 "Error parsing LAPIC address override entry\n");
975 return count;
976 }
977
978 register_lapic_address(acpi_lapic_addr);
979
980 return count;
981}
982
983static int __init acpi_parse_madt_lapic_entries(void)
984{
985 int count;
986 int x2count = 0;
987 int ret;
988 struct acpi_subtable_proc madt_proc[2];
989
990 if (!cpu_has_apic)
991 return -ENODEV;
992
993 /*
994 * Note that the LAPIC address is obtained from the MADT (32-bit value)
995 * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value).
996 */
997
998 count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE,
999 acpi_parse_lapic_addr_ovr, 0);
1000 if (count < 0) {
1001 printk(KERN_ERR PREFIX
1002 "Error parsing LAPIC address override entry\n");
1003 return count;
1004 }
1005
1006 register_lapic_address(acpi_lapic_addr);
1007
1008 count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_SAPIC,
1009 acpi_parse_sapic, MAX_LOCAL_APIC);
1010
1011 if (!count) {
1012 memset(madt_proc, 0, sizeof(madt_proc));
1013 madt_proc[0].id = ACPI_MADT_TYPE_LOCAL_APIC;
1014 madt_proc[0].handler = acpi_parse_lapic;
1015 madt_proc[1].id = ACPI_MADT_TYPE_LOCAL_X2APIC;
1016 madt_proc[1].handler = acpi_parse_x2apic;
1017 ret = acpi_table_parse_entries_array(ACPI_SIG_MADT,
1018 sizeof(struct acpi_table_madt),
1019 madt_proc, ARRAY_SIZE(madt_proc), MAX_LOCAL_APIC);
1020 if (ret < 0) {
1021 printk(KERN_ERR PREFIX
1022 "Error parsing LAPIC/X2APIC entries\n");
1023 return ret;
1024 }
1025
1026 x2count = madt_proc[0].count;
1027 count = madt_proc[1].count;
1028 }
1029 if (!count && !x2count) {
1030 printk(KERN_ERR PREFIX "No LAPIC entries present\n");
1031 /* TBD: Cleanup to allow fallback to MPS */
1032 return -ENODEV;
1033 } else if (count < 0 || x2count < 0) {
1034 printk(KERN_ERR PREFIX "Error parsing LAPIC entry\n");
1035 /* TBD: Cleanup to allow fallback to MPS */
1036 return count;
1037 }
1038
1039 x2count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC_NMI,
1040 acpi_parse_x2apic_nmi, 0);
1041 count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI,
1042 acpi_parse_lapic_nmi, 0);
1043 if (count < 0 || x2count < 0) {
1044 printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n");
1045 /* TBD: Cleanup to allow fallback to MPS */
1046 return count;
1047 }
1048 return 0;
1049}
1050#endif /* CONFIG_X86_LOCAL_APIC */
1051
1052#ifdef CONFIG_X86_IO_APIC
1053static void __init mp_config_acpi_legacy_irqs(void)
1054{
1055 int i;
1056 struct mpc_intsrc mp_irq;
1057
1058#ifdef CONFIG_EISA
1059 /*
1060 * Fabricate the legacy ISA bus (bus #31).
1061 */
1062 mp_bus_id_to_type[MP_ISA_BUS] = MP_BUS_ISA;
1063#endif
1064 set_bit(MP_ISA_BUS, mp_bus_not_pci);
1065 pr_debug("Bus #%d is ISA\n", MP_ISA_BUS);
1066
1067 /*
1068 * Use the default configuration for the IRQs 0-15. Unless
1069 * overridden by (MADT) interrupt source override entries.
1070 */
1071 for (i = 0; i < nr_legacy_irqs(); i++) {
1072 int ioapic, pin;
1073 unsigned int dstapic;
1074 int idx;
1075 u32 gsi;
1076
1077 /* Locate the gsi that irq i maps to. */
1078 if (acpi_isa_irq_to_gsi(i, &gsi))
1079 continue;
1080
1081 /*
1082 * Locate the IOAPIC that manages the ISA IRQ.
1083 */
1084 ioapic = mp_find_ioapic(gsi);
1085 if (ioapic < 0)
1086 continue;
1087 pin = mp_find_ioapic_pin(ioapic, gsi);
1088 dstapic = mpc_ioapic_id(ioapic);
1089
1090 for (idx = 0; idx < mp_irq_entries; idx++) {
1091 struct mpc_intsrc *irq = mp_irqs + idx;
1092
1093 /* Do we already have a mapping for this ISA IRQ? */
1094 if (irq->srcbus == MP_ISA_BUS && irq->srcbusirq == i)
1095 break;
1096
1097 /* Do we already have a mapping for this IOAPIC pin */
1098 if (irq->dstapic == dstapic && irq->dstirq == pin)
1099 break;
1100 }
1101
1102 if (idx != mp_irq_entries) {
1103 printk(KERN_DEBUG "ACPI: IRQ%d used by override.\n", i);
1104 continue; /* IRQ already used */
1105 }
1106
1107 mp_irq.type = MP_INTSRC;
1108 mp_irq.irqflag = 0; /* Conforming */
1109 mp_irq.srcbus = MP_ISA_BUS;
1110 mp_irq.dstapic = dstapic;
1111 mp_irq.irqtype = mp_INT;
1112 mp_irq.srcbusirq = i; /* Identity mapped */
1113 mp_irq.dstirq = pin;
1114
1115 mp_save_irq(&mp_irq);
1116 }
1117}
1118
1119/*
1120 * Parse IOAPIC related entries in MADT
1121 * returns 0 on success, < 0 on error
1122 */
1123static int __init acpi_parse_madt_ioapic_entries(void)
1124{
1125 int count;
1126
1127 /*
1128 * ACPI interpreter is required to complete interrupt setup,
1129 * so if it is off, don't enumerate the io-apics with ACPI.
1130 * If MPS is present, it will handle them,
1131 * otherwise the system will stay in PIC mode
1132 */
1133 if (acpi_disabled || acpi_noirq)
1134 return -ENODEV;
1135
1136 if (!cpu_has_apic)
1137 return -ENODEV;
1138
1139 /*
1140 * if "noapic" boot option, don't look for IO-APICs
1141 */
1142 if (skip_ioapic_setup) {
1143 printk(KERN_INFO PREFIX "Skipping IOAPIC probe "
1144 "due to 'noapic' option.\n");
1145 return -ENODEV;
1146 }
1147
1148 count = acpi_table_parse_madt(ACPI_MADT_TYPE_IO_APIC, acpi_parse_ioapic,
1149 MAX_IO_APICS);
1150 if (!count) {
1151 printk(KERN_ERR PREFIX "No IOAPIC entries present\n");
1152 return -ENODEV;
1153 } else if (count < 0) {
1154 printk(KERN_ERR PREFIX "Error parsing IOAPIC entry\n");
1155 return count;
1156 }
1157
1158 count = acpi_table_parse_madt(ACPI_MADT_TYPE_INTERRUPT_OVERRIDE,
1159 acpi_parse_int_src_ovr, nr_irqs);
1160 if (count < 0) {
1161 printk(KERN_ERR PREFIX
1162 "Error parsing interrupt source overrides entry\n");
1163 /* TBD: Cleanup to allow fallback to MPS */
1164 return count;
1165 }
1166
1167 /*
1168 * If BIOS did not supply an INT_SRC_OVR for the SCI
1169 * pretend we got one so we can set the SCI flags.
1170 */
1171 if (!acpi_sci_override_gsi)
1172 acpi_sci_ioapic_setup(acpi_gbl_FADT.sci_interrupt, 0, 0,
1173 acpi_gbl_FADT.sci_interrupt);
1174
1175 /* Fill in identity legacy mappings where no override */
1176 mp_config_acpi_legacy_irqs();
1177
1178 count = acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE,
1179 acpi_parse_nmi_src, nr_irqs);
1180 if (count < 0) {
1181 printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n");
1182 /* TBD: Cleanup to allow fallback to MPS */
1183 return count;
1184 }
1185
1186 return 0;
1187}
1188#else
1189static inline int acpi_parse_madt_ioapic_entries(void)
1190{
1191 return -1;
1192}
1193#endif /* !CONFIG_X86_IO_APIC */
1194
1195static void __init early_acpi_process_madt(void)
1196{
1197#ifdef CONFIG_X86_LOCAL_APIC
1198 int error;
1199
1200 if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) {
1201
1202 /*
1203 * Parse MADT LAPIC entries
1204 */
1205 error = early_acpi_parse_madt_lapic_addr_ovr();
1206 if (!error) {
1207 acpi_lapic = 1;
1208 smp_found_config = 1;
1209 }
1210 if (error == -EINVAL) {
1211 /*
1212 * Dell Precision Workstation 410, 610 come here.
1213 */
1214 printk(KERN_ERR PREFIX
1215 "Invalid BIOS MADT, disabling ACPI\n");
1216 disable_acpi();
1217 }
1218 }
1219#endif
1220}
1221
1222static void __init acpi_process_madt(void)
1223{
1224#ifdef CONFIG_X86_LOCAL_APIC
1225 int error;
1226
1227 if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) {
1228
1229 /*
1230 * Parse MADT LAPIC entries
1231 */
1232 error = acpi_parse_madt_lapic_entries();
1233 if (!error) {
1234 acpi_lapic = 1;
1235
1236 /*
1237 * Parse MADT IO-APIC entries
1238 */
1239 mutex_lock(&acpi_ioapic_lock);
1240 error = acpi_parse_madt_ioapic_entries();
1241 mutex_unlock(&acpi_ioapic_lock);
1242 if (!error) {
1243 acpi_set_irq_model_ioapic();
1244
1245 smp_found_config = 1;
1246 }
1247 }
1248 if (error == -EINVAL) {
1249 /*
1250 * Dell Precision Workstation 410, 610 come here.
1251 */
1252 printk(KERN_ERR PREFIX
1253 "Invalid BIOS MADT, disabling ACPI\n");
1254 disable_acpi();
1255 }
1256 } else {
1257 /*
1258 * ACPI found no MADT, and so ACPI wants UP PIC mode.
1259 * In the event an MPS table was found, forget it.
1260 * Boot with "acpi=off" to use MPS on such a system.
1261 */
1262 if (smp_found_config) {
1263 printk(KERN_WARNING PREFIX
1264 "No APIC-table, disabling MPS\n");
1265 smp_found_config = 0;
1266 }
1267 }
1268
1269 /*
1270 * ACPI supports both logical (e.g. Hyper-Threading) and physical
1271 * processors, where MPS only supports physical.
1272 */
1273 if (acpi_lapic && acpi_ioapic)
1274 printk(KERN_INFO "Using ACPI (MADT) for SMP configuration "
1275 "information\n");
1276 else if (acpi_lapic)
1277 printk(KERN_INFO "Using ACPI for processor (LAPIC) "
1278 "configuration information\n");
1279#endif
1280 return;
1281}
1282
1283static int __init disable_acpi_irq(const struct dmi_system_id *d)
1284{
1285 if (!acpi_force) {
1286 printk(KERN_NOTICE "%s detected: force use of acpi=noirq\n",
1287 d->ident);
1288 acpi_noirq_set();
1289 }
1290 return 0;
1291}
1292
1293static int __init disable_acpi_pci(const struct dmi_system_id *d)
1294{
1295 if (!acpi_force) {
1296 printk(KERN_NOTICE "%s detected: force use of pci=noacpi\n",
1297 d->ident);
1298 acpi_disable_pci();
1299 }
1300 return 0;
1301}
1302
1303static int __init dmi_disable_acpi(const struct dmi_system_id *d)
1304{
1305 if (!acpi_force) {
1306 printk(KERN_NOTICE "%s detected: acpi off\n", d->ident);
1307 disable_acpi();
1308 } else {
1309 printk(KERN_NOTICE
1310 "Warning: DMI blacklist says broken, but acpi forced\n");
1311 }
1312 return 0;
1313}
1314
1315/*
1316 * Force ignoring BIOS IRQ0 override
1317 */
1318static int __init dmi_ignore_irq0_timer_override(const struct dmi_system_id *d)
1319{
1320 if (!acpi_skip_timer_override) {
1321 pr_notice("%s detected: Ignoring BIOS IRQ0 override\n",
1322 d->ident);
1323 acpi_skip_timer_override = 1;
1324 }
1325 return 0;
1326}
1327
1328/*
1329 * ACPI offers an alternative platform interface model that removes
1330 * ACPI hardware requirements for platforms that do not implement
1331 * the PC Architecture.
1332 *
1333 * We initialize the Hardware-reduced ACPI model here:
1334 */
1335static void __init acpi_reduced_hw_init(void)
1336{
1337 if (acpi_gbl_reduced_hardware) {
1338 /*
1339 * Override x86_init functions and bypass legacy pic
1340 * in Hardware-reduced ACPI mode
1341 */
1342 x86_init.timers.timer_init = x86_init_noop;
1343 x86_init.irqs.pre_vector_init = x86_init_noop;
1344 legacy_pic = &null_legacy_pic;
1345 }
1346}
1347
1348/*
1349 * If your system is blacklisted here, but you find that acpi=force
1350 * works for you, please contact linux-acpi@vger.kernel.org
1351 */
1352static struct dmi_system_id __initdata acpi_dmi_table[] = {
1353 /*
1354 * Boxes that need ACPI disabled
1355 */
1356 {
1357 .callback = dmi_disable_acpi,
1358 .ident = "IBM Thinkpad",
1359 .matches = {
1360 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1361 DMI_MATCH(DMI_BOARD_NAME, "2629H1G"),
1362 },
1363 },
1364
1365 /*
1366 * Boxes that need ACPI PCI IRQ routing disabled
1367 */
1368 {
1369 .callback = disable_acpi_irq,
1370 .ident = "ASUS A7V",
1371 .matches = {
1372 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC"),
1373 DMI_MATCH(DMI_BOARD_NAME, "<A7V>"),
1374 /* newer BIOS, Revision 1011, does work */
1375 DMI_MATCH(DMI_BIOS_VERSION,
1376 "ASUS A7V ACPI BIOS Revision 1007"),
1377 },
1378 },
1379 {
1380 /*
1381 * Latest BIOS for IBM 600E (1.16) has bad pcinum
1382 * for LPC bridge, which is needed for the PCI
1383 * interrupt links to work. DSDT fix is in bug 5966.
1384 * 2645, 2646 model numbers are shared with 600/600E/600X
1385 */
1386 .callback = disable_acpi_irq,
1387 .ident = "IBM Thinkpad 600 Series 2645",
1388 .matches = {
1389 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1390 DMI_MATCH(DMI_BOARD_NAME, "2645"),
1391 },
1392 },
1393 {
1394 .callback = disable_acpi_irq,
1395 .ident = "IBM Thinkpad 600 Series 2646",
1396 .matches = {
1397 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1398 DMI_MATCH(DMI_BOARD_NAME, "2646"),
1399 },
1400 },
1401 /*
1402 * Boxes that need ACPI PCI IRQ routing and PCI scan disabled
1403 */
1404 { /* _BBN 0 bug */
1405 .callback = disable_acpi_pci,
1406 .ident = "ASUS PR-DLS",
1407 .matches = {
1408 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
1409 DMI_MATCH(DMI_BOARD_NAME, "PR-DLS"),
1410 DMI_MATCH(DMI_BIOS_VERSION,
1411 "ASUS PR-DLS ACPI BIOS Revision 1010"),
1412 DMI_MATCH(DMI_BIOS_DATE, "03/21/2003")
1413 },
1414 },
1415 {
1416 .callback = disable_acpi_pci,
1417 .ident = "Acer TravelMate 36x Laptop",
1418 .matches = {
1419 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
1420 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 360"),
1421 },
1422 },
1423 {}
1424};
1425
1426/* second table for DMI checks that should run after early-quirks */
1427static struct dmi_system_id __initdata acpi_dmi_table_late[] = {
1428 /*
1429 * HP laptops which use a DSDT reporting as HP/SB400/10000,
1430 * which includes some code which overrides all temperature
1431 * trip points to 16C if the INTIN2 input of the I/O APIC
1432 * is enabled. This input is incorrectly designated the
1433 * ISA IRQ 0 via an interrupt source override even though
1434 * it is wired to the output of the master 8259A and INTIN0
1435 * is not connected at all. Force ignoring BIOS IRQ0
1436 * override in that cases.
1437 */
1438 {
1439 .callback = dmi_ignore_irq0_timer_override,
1440 .ident = "HP nx6115 laptop",
1441 .matches = {
1442 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1443 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6115"),
1444 },
1445 },
1446 {
1447 .callback = dmi_ignore_irq0_timer_override,
1448 .ident = "HP NX6125 laptop",
1449 .matches = {
1450 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1451 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6125"),
1452 },
1453 },
1454 {
1455 .callback = dmi_ignore_irq0_timer_override,
1456 .ident = "HP NX6325 laptop",
1457 .matches = {
1458 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1459 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6325"),
1460 },
1461 },
1462 {
1463 .callback = dmi_ignore_irq0_timer_override,
1464 .ident = "HP 6715b laptop",
1465 .matches = {
1466 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1467 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq 6715b"),
1468 },
1469 },
1470 {
1471 .callback = dmi_ignore_irq0_timer_override,
1472 .ident = "FUJITSU SIEMENS",
1473 .matches = {
1474 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
1475 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO PRO V2030"),
1476 },
1477 },
1478 {}
1479};
1480
1481/*
1482 * acpi_boot_table_init() and acpi_boot_init()
1483 * called from setup_arch(), always.
1484 * 1. checksums all tables
1485 * 2. enumerates lapics
1486 * 3. enumerates io-apics
1487 *
1488 * acpi_table_init() is separate to allow reading SRAT without
1489 * other side effects.
1490 *
1491 * side effects of acpi_boot_init:
1492 * acpi_lapic = 1 if LAPIC found
1493 * acpi_ioapic = 1 if IOAPIC found
1494 * if (acpi_lapic && acpi_ioapic) smp_found_config = 1;
1495 * if acpi_blacklisted() acpi_disabled = 1;
1496 * acpi_irq_model=...
1497 * ...
1498 */
1499
1500void __init acpi_boot_table_init(void)
1501{
1502 dmi_check_system(acpi_dmi_table);
1503
1504 /*
1505 * If acpi_disabled, bail out
1506 */
1507 if (acpi_disabled)
1508 return;
1509
1510 /*
1511 * Initialize the ACPI boot-time table parser.
1512 */
1513 if (acpi_table_init()) {
1514 disable_acpi();
1515 return;
1516 }
1517
1518 acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf);
1519
1520 /*
1521 * blacklist may disable ACPI entirely
1522 */
1523 if (acpi_blacklisted()) {
1524 if (acpi_force) {
1525 printk(KERN_WARNING PREFIX "acpi=force override\n");
1526 } else {
1527 printk(KERN_WARNING PREFIX "Disabling ACPI support\n");
1528 disable_acpi();
1529 return;
1530 }
1531 }
1532}
1533
1534int __init early_acpi_boot_init(void)
1535{
1536 /*
1537 * If acpi_disabled, bail out
1538 */
1539 if (acpi_disabled)
1540 return 1;
1541
1542 /*
1543 * Process the Multiple APIC Description Table (MADT), if present
1544 */
1545 early_acpi_process_madt();
1546
1547 /*
1548 * Hardware-reduced ACPI mode initialization:
1549 */
1550 acpi_reduced_hw_init();
1551
1552 return 0;
1553}
1554
1555int __init acpi_boot_init(void)
1556{
1557 /* those are executed after early-quirks are executed */
1558 dmi_check_system(acpi_dmi_table_late);
1559
1560 /*
1561 * If acpi_disabled, bail out
1562 */
1563 if (acpi_disabled)
1564 return 1;
1565
1566 acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf);
1567
1568 /*
1569 * set sci_int and PM timer address
1570 */
1571 acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt);
1572
1573 /*
1574 * Process the Multiple APIC Description Table (MADT), if present
1575 */
1576 acpi_process_madt();
1577
1578 acpi_table_parse(ACPI_SIG_HPET, acpi_parse_hpet);
1579
1580 if (!acpi_noirq)
1581 x86_init.pci.init = pci_acpi_init;
1582
1583 return 0;
1584}
1585
1586static int __init parse_acpi(char *arg)
1587{
1588 if (!arg)
1589 return -EINVAL;
1590
1591 /* "acpi=off" disables both ACPI table parsing and interpreter */
1592 if (strcmp(arg, "off") == 0) {
1593 disable_acpi();
1594 }
1595 /* acpi=force to over-ride black-list */
1596 else if (strcmp(arg, "force") == 0) {
1597 acpi_force = 1;
1598 acpi_disabled = 0;
1599 }
1600 /* acpi=strict disables out-of-spec workarounds */
1601 else if (strcmp(arg, "strict") == 0) {
1602 acpi_strict = 1;
1603 }
1604 /* acpi=rsdt use RSDT instead of XSDT */
1605 else if (strcmp(arg, "rsdt") == 0) {
1606 acpi_gbl_do_not_use_xsdt = TRUE;
1607 }
1608 /* "acpi=noirq" disables ACPI interrupt routing */
1609 else if (strcmp(arg, "noirq") == 0) {
1610 acpi_noirq_set();
1611 }
1612 /* "acpi=copy_dsdt" copys DSDT */
1613 else if (strcmp(arg, "copy_dsdt") == 0) {
1614 acpi_gbl_copy_dsdt_locally = 1;
1615 }
1616 /* "acpi=nocmcff" disables FF mode for corrected errors */
1617 else if (strcmp(arg, "nocmcff") == 0) {
1618 acpi_disable_cmcff = 1;
1619 } else {
1620 /* Core will printk when we return error. */
1621 return -EINVAL;
1622 }
1623 return 0;
1624}
1625early_param("acpi", parse_acpi);
1626
1627/* FIXME: Using pci= for an ACPI parameter is a travesty. */
1628static int __init parse_pci(char *arg)
1629{
1630 if (arg && strcmp(arg, "noacpi") == 0)
1631 acpi_disable_pci();
1632 return 0;
1633}
1634early_param("pci", parse_pci);
1635
1636int __init acpi_mps_check(void)
1637{
1638#if defined(CONFIG_X86_LOCAL_APIC) && !defined(CONFIG_X86_MPPARSE)
1639/* mptable code is not built-in*/
1640 if (acpi_disabled || acpi_noirq) {
1641 printk(KERN_WARNING "MPS support code is not built-in.\n"
1642 "Using acpi=off or acpi=noirq or pci=noacpi "
1643 "may have problem\n");
1644 return 1;
1645 }
1646#endif
1647 return 0;
1648}
1649
1650#ifdef CONFIG_X86_IO_APIC
1651static int __init parse_acpi_skip_timer_override(char *arg)
1652{
1653 acpi_skip_timer_override = 1;
1654 return 0;
1655}
1656early_param("acpi_skip_timer_override", parse_acpi_skip_timer_override);
1657
1658static int __init parse_acpi_use_timer_override(char *arg)
1659{
1660 acpi_use_timer_override = 1;
1661 return 0;
1662}
1663early_param("acpi_use_timer_override", parse_acpi_use_timer_override);
1664#endif /* CONFIG_X86_IO_APIC */
1665
1666static int __init setup_acpi_sci(char *s)
1667{
1668 if (!s)
1669 return -EINVAL;
1670 if (!strcmp(s, "edge"))
1671 acpi_sci_flags = ACPI_MADT_TRIGGER_EDGE |
1672 (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK);
1673 else if (!strcmp(s, "level"))
1674 acpi_sci_flags = ACPI_MADT_TRIGGER_LEVEL |
1675 (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK);
1676 else if (!strcmp(s, "high"))
1677 acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_HIGH |
1678 (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK);
1679 else if (!strcmp(s, "low"))
1680 acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_LOW |
1681 (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK);
1682 else
1683 return -EINVAL;
1684 return 0;
1685}
1686early_param("acpi_sci", setup_acpi_sci);
1687
1688int __acpi_acquire_global_lock(unsigned int *lock)
1689{
1690 unsigned int old, new, val;
1691 do {
1692 old = *lock;
1693 new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1));
1694 val = cmpxchg(lock, old, new);
1695 } while (unlikely (val != old));
1696 return (new < 3) ? -1 : 0;
1697}
1698
1699int __acpi_release_global_lock(unsigned int *lock)
1700{
1701 unsigned int old, new, val;
1702 do {
1703 old = *lock;
1704 new = old & ~0x3;
1705 val = cmpxchg(lock, old, new);
1706 } while (unlikely (val != old));
1707 return old & 0x1;
1708}
1709
1710void __init arch_reserve_mem_area(acpi_physical_address addr, size_t size)
1711{
1712 e820_add_region(addr, size, E820_ACPI);
1713 update_e820();
1714}