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ipmi: remove trydefaults parameter and default init
[mirror_ubuntu-artful-kernel.git] / arch / x86 / kernel / acpi / boot.c
1 /*
2 * boot.c - Architecture-Specific Low-Level ACPI Boot Support
3 *
4 * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
5 * Copyright (C) 2001 Jun Nakajima <jun.nakajima@intel.com>
6 *
7 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 *
23 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
24 */
25
26 #include <linux/init.h>
27 #include <linux/acpi.h>
28 #include <linux/acpi_pmtmr.h>
29 #include <linux/efi.h>
30 #include <linux/cpumask.h>
31 #include <linux/module.h>
32 #include <linux/dmi.h>
33 #include <linux/irq.h>
34 #include <linux/slab.h>
35 #include <linux/bootmem.h>
36 #include <linux/ioport.h>
37 #include <linux/pci.h>
38
39 #include <asm/irqdomain.h>
40 #include <asm/pci_x86.h>
41 #include <asm/pgtable.h>
42 #include <asm/io_apic.h>
43 #include <asm/apic.h>
44 #include <asm/io.h>
45 #include <asm/mpspec.h>
46 #include <asm/smp.h>
47 #include <asm/i8259.h>
48
49 #include "sleep.h" /* To include x86_acpi_suspend_lowlevel */
50 static int __initdata acpi_force = 0;
51 int acpi_disabled;
52 EXPORT_SYMBOL(acpi_disabled);
53
54 #ifdef CONFIG_X86_64
55 # include <asm/proto.h>
56 #endif /* X86 */
57
58 #define PREFIX "ACPI: "
59
60 int acpi_noirq; /* skip ACPI IRQ initialization */
61 int acpi_pci_disabled; /* skip ACPI PCI scan and IRQ initialization */
62 EXPORT_SYMBOL(acpi_pci_disabled);
63
64 int acpi_lapic;
65 int acpi_ioapic;
66 int acpi_strict;
67 int acpi_disable_cmcff;
68
69 u8 acpi_sci_flags __initdata;
70 int acpi_sci_override_gsi __initdata;
71 int acpi_skip_timer_override __initdata;
72 int acpi_use_timer_override __initdata;
73 int acpi_fix_pin2_polarity __initdata;
74
75 #ifdef CONFIG_X86_LOCAL_APIC
76 static u64 acpi_lapic_addr __initdata = APIC_DEFAULT_PHYS_BASE;
77 #endif
78
79 /*
80 * Locks related to IOAPIC hotplug
81 * Hotplug side:
82 * ->device_hotplug_lock
83 * ->acpi_ioapic_lock
84 * ->ioapic_lock
85 * Interrupt mapping side:
86 * ->acpi_ioapic_lock
87 * ->ioapic_mutex
88 * ->ioapic_lock
89 */
90 static DEFINE_MUTEX(acpi_ioapic_lock);
91
92 /* --------------------------------------------------------------------------
93 Boot-time Configuration
94 -------------------------------------------------------------------------- */
95
96 /*
97 * The default interrupt routing model is PIC (8259). This gets
98 * overridden if IOAPICs are enumerated (below).
99 */
100 enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_PIC;
101
102
103 /*
104 * ISA irqs by default are the first 16 gsis but can be
105 * any gsi as specified by an interrupt source override.
106 */
107 static u32 isa_irq_to_gsi[NR_IRQS_LEGACY] __read_mostly = {
108 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15
109 };
110
111 #define ACPI_INVALID_GSI INT_MIN
112
113 /*
114 * This is just a simple wrapper around early_ioremap(),
115 * with sanity checks for phys == 0 and size == 0.
116 */
117 char *__init __acpi_map_table(unsigned long phys, unsigned long size)
118 {
119
120 if (!phys || !size)
121 return NULL;
122
123 return early_ioremap(phys, size);
124 }
125
126 void __init __acpi_unmap_table(char *map, unsigned long size)
127 {
128 if (!map || !size)
129 return;
130
131 early_iounmap(map, size);
132 }
133
134 #ifdef CONFIG_X86_LOCAL_APIC
135 static int __init acpi_parse_madt(struct acpi_table_header *table)
136 {
137 struct acpi_table_madt *madt = NULL;
138
139 if (!boot_cpu_has(X86_FEATURE_APIC))
140 return -EINVAL;
141
142 madt = (struct acpi_table_madt *)table;
143 if (!madt) {
144 printk(KERN_WARNING PREFIX "Unable to map MADT\n");
145 return -ENODEV;
146 }
147
148 if (madt->address) {
149 acpi_lapic_addr = (u64) madt->address;
150
151 printk(KERN_DEBUG PREFIX "Local APIC address 0x%08x\n",
152 madt->address);
153 }
154
155 default_acpi_madt_oem_check(madt->header.oem_id,
156 madt->header.oem_table_id);
157
158 return 0;
159 }
160
161 /**
162 * acpi_register_lapic - register a local apic and generates a logic cpu number
163 * @id: local apic id to register
164 * @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 __init
404 acpi_parse_ioapic(struct acpi_subtable_header * header, const unsigned long end)
405 {
406 struct acpi_madt_io_apic *ioapic = NULL;
407 struct ioapic_domain_cfg cfg = {
408 .type = IOAPIC_DOMAIN_DYNAMIC,
409 .ops = &mp_ioapic_irqdomain_ops,
410 };
411
412 ioapic = (struct acpi_madt_io_apic *)header;
413
414 if (BAD_MADT_ENTRY(ioapic, end))
415 return -EINVAL;
416
417 acpi_table_print_madt_entry(header);
418
419 /* Statically assign IRQ numbers for IOAPICs hosting legacy IRQs */
420 if (ioapic->global_irq_base < nr_legacy_irqs())
421 cfg.type = IOAPIC_DOMAIN_LEGACY;
422
423 mp_register_ioapic(ioapic->id, ioapic->address, ioapic->global_irq_base,
424 &cfg);
425
426 return 0;
427 }
428
429 /*
430 * Parse Interrupt Source Override for the ACPI SCI
431 */
432 static void __init acpi_sci_ioapic_setup(u8 bus_irq, u16 polarity, u16 trigger, u32 gsi)
433 {
434 if (trigger == 0) /* compatible SCI trigger is level */
435 trigger = 3;
436
437 if (polarity == 0) /* compatible SCI polarity is low */
438 polarity = 3;
439
440 /* Command-line over-ride via acpi_sci= */
441 if (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK)
442 trigger = (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) >> 2;
443
444 if (acpi_sci_flags & ACPI_MADT_POLARITY_MASK)
445 polarity = acpi_sci_flags & ACPI_MADT_POLARITY_MASK;
446
447 mp_override_legacy_irq(bus_irq, polarity, trigger, gsi);
448
449 /*
450 * stash over-ride to indicate we've been here
451 * and for later update of acpi_gbl_FADT
452 */
453 acpi_sci_override_gsi = gsi;
454 return;
455 }
456
457 static int __init
458 acpi_parse_int_src_ovr(struct acpi_subtable_header * header,
459 const unsigned long end)
460 {
461 struct acpi_madt_interrupt_override *intsrc = NULL;
462
463 intsrc = (struct acpi_madt_interrupt_override *)header;
464
465 if (BAD_MADT_ENTRY(intsrc, end))
466 return -EINVAL;
467
468 acpi_table_print_madt_entry(header);
469
470 if (intsrc->source_irq == acpi_gbl_FADT.sci_interrupt) {
471 acpi_sci_ioapic_setup(intsrc->source_irq,
472 intsrc->inti_flags & ACPI_MADT_POLARITY_MASK,
473 (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2,
474 intsrc->global_irq);
475 return 0;
476 }
477
478 if (intsrc->source_irq == 0) {
479 if (acpi_skip_timer_override) {
480 printk(PREFIX "BIOS IRQ0 override ignored.\n");
481 return 0;
482 }
483
484 if ((intsrc->global_irq == 2) && acpi_fix_pin2_polarity
485 && (intsrc->inti_flags & ACPI_MADT_POLARITY_MASK)) {
486 intsrc->inti_flags &= ~ACPI_MADT_POLARITY_MASK;
487 printk(PREFIX "BIOS IRQ0 pin2 override: forcing polarity to high active.\n");
488 }
489 }
490
491 mp_override_legacy_irq(intsrc->source_irq,
492 intsrc->inti_flags & ACPI_MADT_POLARITY_MASK,
493 (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2,
494 intsrc->global_irq);
495
496 return 0;
497 }
498
499 static int __init
500 acpi_parse_nmi_src(struct acpi_subtable_header * header, const unsigned long end)
501 {
502 struct acpi_madt_nmi_source *nmi_src = NULL;
503
504 nmi_src = (struct acpi_madt_nmi_source *)header;
505
506 if (BAD_MADT_ENTRY(nmi_src, end))
507 return -EINVAL;
508
509 acpi_table_print_madt_entry(header);
510
511 /* TBD: Support nimsrc entries? */
512
513 return 0;
514 }
515
516 #endif /* CONFIG_X86_IO_APIC */
517
518 /*
519 * acpi_pic_sci_set_trigger()
520 *
521 * use ELCR to set PIC-mode trigger type for SCI
522 *
523 * If a PIC-mode SCI is not recognized or gives spurious IRQ7's
524 * it may require Edge Trigger -- use "acpi_sci=edge"
525 *
526 * Port 0x4d0-4d1 are ECLR1 and ECLR2, the Edge/Level Control Registers
527 * for the 8259 PIC. bit[n] = 1 means irq[n] is Level, otherwise Edge.
528 * ECLR1 is IRQs 0-7 (IRQ 0, 1, 2 must be 0)
529 * ECLR2 is IRQs 8-15 (IRQ 8, 13 must be 0)
530 */
531
532 void __init acpi_pic_sci_set_trigger(unsigned int irq, u16 trigger)
533 {
534 unsigned int mask = 1 << irq;
535 unsigned int old, new;
536
537 /* Real old ELCR mask */
538 old = inb(0x4d0) | (inb(0x4d1) << 8);
539
540 /*
541 * If we use ACPI to set PCI IRQs, then we should clear ELCR
542 * since we will set it correctly as we enable the PCI irq
543 * routing.
544 */
545 new = acpi_noirq ? old : 0;
546
547 /*
548 * Update SCI information in the ELCR, it isn't in the PCI
549 * routing tables..
550 */
551 switch (trigger) {
552 case 1: /* Edge - clear */
553 new &= ~mask;
554 break;
555 case 3: /* Level - set */
556 new |= mask;
557 break;
558 }
559
560 if (old == new)
561 return;
562
563 printk(PREFIX "setting ELCR to %04x (from %04x)\n", new, old);
564 outb(new, 0x4d0);
565 outb(new >> 8, 0x4d1);
566 }
567
568 int acpi_gsi_to_irq(u32 gsi, unsigned int *irqp)
569 {
570 int rc, irq, trigger, polarity;
571
572 if (acpi_irq_model == ACPI_IRQ_MODEL_PIC) {
573 *irqp = gsi;
574 return 0;
575 }
576
577 rc = acpi_get_override_irq(gsi, &trigger, &polarity);
578 if (rc == 0) {
579 trigger = trigger ? ACPI_LEVEL_SENSITIVE : ACPI_EDGE_SENSITIVE;
580 polarity = polarity ? ACPI_ACTIVE_LOW : ACPI_ACTIVE_HIGH;
581 irq = acpi_register_gsi(NULL, gsi, trigger, polarity);
582 if (irq >= 0) {
583 *irqp = irq;
584 return 0;
585 }
586 }
587
588 return -1;
589 }
590 EXPORT_SYMBOL_GPL(acpi_gsi_to_irq);
591
592 int acpi_isa_irq_to_gsi(unsigned isa_irq, u32 *gsi)
593 {
594 if (isa_irq < nr_legacy_irqs() &&
595 isa_irq_to_gsi[isa_irq] != ACPI_INVALID_GSI) {
596 *gsi = isa_irq_to_gsi[isa_irq];
597 return 0;
598 }
599
600 return -1;
601 }
602
603 static int acpi_register_gsi_pic(struct device *dev, u32 gsi,
604 int trigger, int polarity)
605 {
606 #ifdef CONFIG_PCI
607 /*
608 * Make sure all (legacy) PCI IRQs are set as level-triggered.
609 */
610 if (trigger == ACPI_LEVEL_SENSITIVE)
611 elcr_set_level_irq(gsi);
612 #endif
613
614 return gsi;
615 }
616
617 #ifdef CONFIG_X86_LOCAL_APIC
618 static int acpi_register_gsi_ioapic(struct device *dev, u32 gsi,
619 int trigger, int polarity)
620 {
621 int irq = gsi;
622 #ifdef CONFIG_X86_IO_APIC
623 int node;
624 struct irq_alloc_info info;
625
626 node = dev ? dev_to_node(dev) : NUMA_NO_NODE;
627 trigger = trigger == ACPI_EDGE_SENSITIVE ? 0 : 1;
628 polarity = polarity == ACPI_ACTIVE_HIGH ? 0 : 1;
629 ioapic_set_alloc_attr(&info, node, trigger, polarity);
630
631 mutex_lock(&acpi_ioapic_lock);
632 irq = mp_map_gsi_to_irq(gsi, IOAPIC_MAP_ALLOC, &info);
633 /* Don't set up the ACPI SCI because it's already set up */
634 if (irq >= 0 && enable_update_mptable &&
635 acpi_gbl_FADT.sci_interrupt != gsi)
636 mp_config_acpi_gsi(dev, gsi, trigger, polarity);
637 mutex_unlock(&acpi_ioapic_lock);
638 #endif
639
640 return irq;
641 }
642
643 static void acpi_unregister_gsi_ioapic(u32 gsi)
644 {
645 #ifdef CONFIG_X86_IO_APIC
646 int irq;
647
648 mutex_lock(&acpi_ioapic_lock);
649 irq = mp_map_gsi_to_irq(gsi, 0, NULL);
650 if (irq > 0)
651 mp_unmap_irq(irq);
652 mutex_unlock(&acpi_ioapic_lock);
653 #endif
654 }
655 #endif
656
657 int (*__acpi_register_gsi)(struct device *dev, u32 gsi,
658 int trigger, int polarity) = acpi_register_gsi_pic;
659 void (*__acpi_unregister_gsi)(u32 gsi) = NULL;
660
661 #ifdef CONFIG_ACPI_SLEEP
662 int (*acpi_suspend_lowlevel)(void) = x86_acpi_suspend_lowlevel;
663 #else
664 int (*acpi_suspend_lowlevel)(void);
665 #endif
666
667 /*
668 * success: return IRQ number (>=0)
669 * failure: return < 0
670 */
671 int acpi_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity)
672 {
673 return __acpi_register_gsi(dev, gsi, trigger, polarity);
674 }
675 EXPORT_SYMBOL_GPL(acpi_register_gsi);
676
677 void acpi_unregister_gsi(u32 gsi)
678 {
679 if (__acpi_unregister_gsi)
680 __acpi_unregister_gsi(gsi);
681 }
682 EXPORT_SYMBOL_GPL(acpi_unregister_gsi);
683
684 #ifdef CONFIG_X86_LOCAL_APIC
685 static void __init acpi_set_irq_model_ioapic(void)
686 {
687 acpi_irq_model = ACPI_IRQ_MODEL_IOAPIC;
688 __acpi_register_gsi = acpi_register_gsi_ioapic;
689 __acpi_unregister_gsi = acpi_unregister_gsi_ioapic;
690 acpi_ioapic = 1;
691 }
692 #endif
693
694 /*
695 * ACPI based hotplug support for CPU
696 */
697 #ifdef CONFIG_ACPI_HOTPLUG_CPU
698 #include <acpi/processor.h>
699
700 static void acpi_map_cpu2node(acpi_handle handle, int cpu, int physid)
701 {
702 #ifdef CONFIG_ACPI_NUMA
703 int nid;
704
705 nid = acpi_get_node(handle);
706 if (nid != -1) {
707 set_apicid_to_node(physid, nid);
708 numa_set_node(cpu, nid);
709 }
710 #endif
711 }
712
713 int acpi_map_cpu(acpi_handle handle, phys_cpuid_t physid, int *pcpu)
714 {
715 int cpu;
716
717 cpu = acpi_register_lapic(physid, ACPI_MADT_ENABLED);
718 if (cpu < 0) {
719 pr_info(PREFIX "Unable to map lapic to logical cpu number\n");
720 return cpu;
721 }
722
723 acpi_processor_set_pdc(handle);
724 acpi_map_cpu2node(handle, cpu, physid);
725
726 *pcpu = cpu;
727 return 0;
728 }
729 EXPORT_SYMBOL(acpi_map_cpu);
730
731 int acpi_unmap_cpu(int cpu)
732 {
733 #ifdef CONFIG_ACPI_NUMA
734 set_apicid_to_node(per_cpu(x86_cpu_to_apicid, cpu), NUMA_NO_NODE);
735 #endif
736
737 per_cpu(x86_cpu_to_apicid, cpu) = -1;
738 set_cpu_present(cpu, false);
739 num_processors--;
740
741 return (0);
742 }
743 EXPORT_SYMBOL(acpi_unmap_cpu);
744 #endif /* CONFIG_ACPI_HOTPLUG_CPU */
745
746 int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base)
747 {
748 int ret = -ENOSYS;
749 #ifdef CONFIG_ACPI_HOTPLUG_IOAPIC
750 int ioapic_id;
751 u64 addr;
752 struct ioapic_domain_cfg cfg = {
753 .type = IOAPIC_DOMAIN_DYNAMIC,
754 .ops = &mp_ioapic_irqdomain_ops,
755 };
756
757 ioapic_id = acpi_get_ioapic_id(handle, gsi_base, &addr);
758 if (ioapic_id < 0) {
759 unsigned long long uid;
760 acpi_status status;
761
762 status = acpi_evaluate_integer(handle, METHOD_NAME__UID,
763 NULL, &uid);
764 if (ACPI_FAILURE(status)) {
765 acpi_handle_warn(handle, "failed to get IOAPIC ID.\n");
766 return -EINVAL;
767 }
768 ioapic_id = (int)uid;
769 }
770
771 mutex_lock(&acpi_ioapic_lock);
772 ret = mp_register_ioapic(ioapic_id, phys_addr, gsi_base, &cfg);
773 mutex_unlock(&acpi_ioapic_lock);
774 #endif
775
776 return ret;
777 }
778 EXPORT_SYMBOL(acpi_register_ioapic);
779
780 int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base)
781 {
782 int ret = -ENOSYS;
783
784 #ifdef CONFIG_ACPI_HOTPLUG_IOAPIC
785 mutex_lock(&acpi_ioapic_lock);
786 ret = mp_unregister_ioapic(gsi_base);
787 mutex_unlock(&acpi_ioapic_lock);
788 #endif
789
790 return ret;
791 }
792 EXPORT_SYMBOL(acpi_unregister_ioapic);
793
794 /**
795 * acpi_ioapic_registered - Check whether IOAPIC assoicatied with @gsi_base
796 * has been registered
797 * @handle: ACPI handle of the IOAPIC deivce
798 * @gsi_base: GSI base associated with the IOAPIC
799 *
800 * Assume caller holds some type of lock to serialize acpi_ioapic_registered()
801 * with acpi_register_ioapic()/acpi_unregister_ioapic().
802 */
803 int acpi_ioapic_registered(acpi_handle handle, u32 gsi_base)
804 {
805 int ret = 0;
806
807 #ifdef CONFIG_ACPI_HOTPLUG_IOAPIC
808 mutex_lock(&acpi_ioapic_lock);
809 ret = mp_ioapic_registered(gsi_base);
810 mutex_unlock(&acpi_ioapic_lock);
811 #endif
812
813 return ret;
814 }
815
816 static int __init acpi_parse_sbf(struct acpi_table_header *table)
817 {
818 struct acpi_table_boot *sb = (struct acpi_table_boot *)table;
819
820 sbf_port = sb->cmos_index; /* Save CMOS port */
821
822 return 0;
823 }
824
825 #ifdef CONFIG_HPET_TIMER
826 #include <asm/hpet.h>
827
828 static struct resource *hpet_res __initdata;
829
830 static int __init acpi_parse_hpet(struct acpi_table_header *table)
831 {
832 struct acpi_table_hpet *hpet_tbl = (struct acpi_table_hpet *)table;
833
834 if (hpet_tbl->address.space_id != ACPI_SPACE_MEM) {
835 printk(KERN_WARNING PREFIX "HPET timers must be located in "
836 "memory.\n");
837 return -1;
838 }
839
840 hpet_address = hpet_tbl->address.address;
841 hpet_blockid = hpet_tbl->sequence;
842
843 /*
844 * Some broken BIOSes advertise HPET at 0x0. We really do not
845 * want to allocate a resource there.
846 */
847 if (!hpet_address) {
848 printk(KERN_WARNING PREFIX
849 "HPET id: %#x base: %#lx is invalid\n",
850 hpet_tbl->id, hpet_address);
851 return 0;
852 }
853 #ifdef CONFIG_X86_64
854 /*
855 * Some even more broken BIOSes advertise HPET at
856 * 0xfed0000000000000 instead of 0xfed00000. Fix it up and add
857 * some noise:
858 */
859 if (hpet_address == 0xfed0000000000000UL) {
860 if (!hpet_force_user) {
861 printk(KERN_WARNING PREFIX "HPET id: %#x "
862 "base: 0xfed0000000000000 is bogus\n "
863 "try hpet=force on the kernel command line to "
864 "fix it up to 0xfed00000.\n", hpet_tbl->id);
865 hpet_address = 0;
866 return 0;
867 }
868 printk(KERN_WARNING PREFIX
869 "HPET id: %#x base: 0xfed0000000000000 fixed up "
870 "to 0xfed00000.\n", hpet_tbl->id);
871 hpet_address >>= 32;
872 }
873 #endif
874 printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n",
875 hpet_tbl->id, hpet_address);
876
877 /*
878 * Allocate and initialize the HPET firmware resource for adding into
879 * the resource tree during the lateinit timeframe.
880 */
881 #define HPET_RESOURCE_NAME_SIZE 9
882 hpet_res = alloc_bootmem(sizeof(*hpet_res) + HPET_RESOURCE_NAME_SIZE);
883
884 hpet_res->name = (void *)&hpet_res[1];
885 hpet_res->flags = IORESOURCE_MEM;
886 snprintf((char *)hpet_res->name, HPET_RESOURCE_NAME_SIZE, "HPET %u",
887 hpet_tbl->sequence);
888
889 hpet_res->start = hpet_address;
890 hpet_res->end = hpet_address + (1 * 1024) - 1;
891
892 return 0;
893 }
894
895 /*
896 * hpet_insert_resource inserts the HPET resources used into the resource
897 * tree.
898 */
899 static __init int hpet_insert_resource(void)
900 {
901 if (!hpet_res)
902 return 1;
903
904 return insert_resource(&iomem_resource, hpet_res);
905 }
906
907 late_initcall(hpet_insert_resource);
908
909 #else
910 #define acpi_parse_hpet NULL
911 #endif
912
913 static int __init acpi_parse_fadt(struct acpi_table_header *table)
914 {
915 if (!(acpi_gbl_FADT.boot_flags & ACPI_FADT_LEGACY_DEVICES)) {
916 pr_debug("ACPI: no legacy devices present\n");
917 x86_platform.legacy.devices.pnpbios = 0;
918 }
919
920 if (acpi_gbl_FADT.boot_flags & ACPI_FADT_NO_CMOS_RTC) {
921 pr_debug("ACPI: not registering RTC platform device\n");
922 x86_platform.legacy.rtc = 0;
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
958 static int __init early_acpi_parse_madt_lapic_addr_ovr(void)
959 {
960 int count;
961
962 if (!boot_cpu_has(X86_FEATURE_APIC))
963 return -ENODEV;
964
965 /*
966 * Note that the LAPIC address is obtained from the MADT (32-bit value)
967 * and (optionally) overridden 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
983 static 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 (!boot_cpu_has(X86_FEATURE_APIC))
991 return -ENODEV;
992
993 /*
994 * Note that the LAPIC address is obtained from the MADT (32-bit value)
995 * and (optionally) overridden 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
1053 static 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 */
1123 static 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 (!boot_cpu_has(X86_FEATURE_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
1189 static inline int acpi_parse_madt_ioapic_entries(void)
1190 {
1191 return -1;
1192 }
1193 #endif /* !CONFIG_X86_IO_APIC */
1194
1195 static 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
1222 static 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
1283 static 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
1293 static 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
1303 static 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 */
1318 static 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 */
1335 static 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 */
1352 static 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 */
1427 static 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
1500 void __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
1534 int __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
1555 int __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
1586 static 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 }
1625 early_param("acpi", parse_acpi);
1626
1627 /* FIXME: Using pci= for an ACPI parameter is a travesty. */
1628 static int __init parse_pci(char *arg)
1629 {
1630 if (arg && strcmp(arg, "noacpi") == 0)
1631 acpi_disable_pci();
1632 return 0;
1633 }
1634 early_param("pci", parse_pci);
1635
1636 int __init acpi_mps_check(void)
1637 {
1638 #if defined(CONFIG_X86_LOCAL_APIC) && !defined(CONFIG_X86_MPPARSE)
1639 /* mptable code is not built-in*/
1640 if (acpi_disabled || acpi_noirq) {
1641 printk(KERN_WARNING "MPS support code is not built-in.\n"
1642 "Using acpi=off or acpi=noirq or pci=noacpi "
1643 "may have problem\n");
1644 return 1;
1645 }
1646 #endif
1647 return 0;
1648 }
1649
1650 #ifdef CONFIG_X86_IO_APIC
1651 static int __init parse_acpi_skip_timer_override(char *arg)
1652 {
1653 acpi_skip_timer_override = 1;
1654 return 0;
1655 }
1656 early_param("acpi_skip_timer_override", parse_acpi_skip_timer_override);
1657
1658 static int __init parse_acpi_use_timer_override(char *arg)
1659 {
1660 acpi_use_timer_override = 1;
1661 return 0;
1662 }
1663 early_param("acpi_use_timer_override", parse_acpi_use_timer_override);
1664 #endif /* CONFIG_X86_IO_APIC */
1665
1666 static int __init setup_acpi_sci(char *s)
1667 {
1668 if (!s)
1669 return -EINVAL;
1670 if (!strcmp(s, "edge"))
1671 acpi_sci_flags = ACPI_MADT_TRIGGER_EDGE |
1672 (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK);
1673 else if (!strcmp(s, "level"))
1674 acpi_sci_flags = ACPI_MADT_TRIGGER_LEVEL |
1675 (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK);
1676 else if (!strcmp(s, "high"))
1677 acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_HIGH |
1678 (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK);
1679 else if (!strcmp(s, "low"))
1680 acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_LOW |
1681 (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK);
1682 else
1683 return -EINVAL;
1684 return 0;
1685 }
1686 early_param("acpi_sci", setup_acpi_sci);
1687
1688 int __acpi_acquire_global_lock(unsigned int *lock)
1689 {
1690 unsigned int old, new, val;
1691 do {
1692 old = *lock;
1693 new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1));
1694 val = cmpxchg(lock, old, new);
1695 } while (unlikely (val != old));
1696 return (new < 3) ? -1 : 0;
1697 }
1698
1699 int __acpi_release_global_lock(unsigned int *lock)
1700 {
1701 unsigned int old, new, val;
1702 do {
1703 old = *lock;
1704 new = old & ~0x3;
1705 val = cmpxchg(lock, old, new);
1706 } while (unlikely (val != old));
1707 return old & 0x1;
1708 }
1709
1710 void __init arch_reserve_mem_area(acpi_physical_address addr, size_t size)
1711 {
1712 e820_add_region(addr, size, E820_ACPI);
1713 update_e820();
1714 }
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