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Linux 2.6.31.6
[linux/fpc-iii.git] / arch / x86 / kernel / acpi / boot.c
blob6b8ca3a0285d77512219724750bca449fa3a8a67
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/bootmem.h>
35 #include <linux/ioport.h>
36 #include <linux/pci.h>
37
38 #include <asm/pgtable.h>
39 #include <asm/io_apic.h>
40 #include <asm/apic.h>
41 #include <asm/io.h>
42 #include <asm/mpspec.h>
43 #include <asm/smp.h>
44
45 static int __initdata acpi_force = 0;
46 u32 acpi_rsdt_forced;
47 int acpi_disabled;
48 EXPORT_SYMBOL(acpi_disabled);
49
50 #ifdef CONFIG_X86_64
51 # include <asm/proto.h>
52 #endif /* X86 */
53
54 #define BAD_MADT_ENTRY(entry, end) ( \
55 (!entry) || (unsigned long)entry + sizeof(*entry) > end || \
56 ((struct acpi_subtable_header *)entry)->length < sizeof(*entry))
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 int acpi_ht __initdata = 1; /* enable HT */
64
65 int acpi_lapic;
66 int acpi_ioapic;
67 int acpi_strict;
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
74 #ifdef CONFIG_X86_LOCAL_APIC
75 static u64 acpi_lapic_addr __initdata = APIC_DEFAULT_PHYS_BASE;
76 #endif
77
78 #ifndef __HAVE_ARCH_CMPXCHG
79 #warning ACPI uses CMPXCHG, i486 and later hardware
80 #endif
81
82 /* --------------------------------------------------------------------------
83 Boot-time Configuration
84 -------------------------------------------------------------------------- */
85
86 /*
87 * The default interrupt routing model is PIC (8259). This gets
88 * overridden if IOAPICs are enumerated (below).
89 */
90 enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_PIC;
91
92
93 /*
94 * Temporarily use the virtual area starting from FIX_IO_APIC_BASE_END,
95 * to map the target physical address. The problem is that set_fixmap()
96 * provides a single page, and it is possible that the page is not
97 * sufficient.
98 * By using this area, we can map up to MAX_IO_APICS pages temporarily,
99 * i.e. until the next __va_range() call.
100 *
101 * Important Safety Note: The fixed I/O APIC page numbers are *subtracted*
102 * from the fixed base. That's why we start at FIX_IO_APIC_BASE_END and
103 * count idx down while incrementing the phys address.
104 */
105 char *__init __acpi_map_table(unsigned long phys, unsigned long size)
106 {
107
108 if (!phys || !size)
109 return NULL;
110
111 return early_ioremap(phys, size);
112 }
113 void __init __acpi_unmap_table(char *map, unsigned long size)
114 {
115 if (!map || !size)
116 return;
117
118 early_iounmap(map, size);
119 }
120
121 #ifdef CONFIG_X86_LOCAL_APIC
122 static int __init acpi_parse_madt(struct acpi_table_header *table)
123 {
124 struct acpi_table_madt *madt = NULL;
125
126 if (!cpu_has_apic)
127 return -EINVAL;
128
129 madt = (struct acpi_table_madt *)table;
130 if (!madt) {
131 printk(KERN_WARNING PREFIX "Unable to map MADT\n");
132 return -ENODEV;
133 }
134
135 if (madt->address) {
136 acpi_lapic_addr = (u64) madt->address;
137
138 printk(KERN_DEBUG PREFIX "Local APIC address 0x%08x\n",
139 madt->address);
140 }
141
142 default_acpi_madt_oem_check(madt->header.oem_id,
143 madt->header.oem_table_id);
144
145 return 0;
146 }
147
148 static void __cpuinit acpi_register_lapic(int id, u8 enabled)
149 {
150 unsigned int ver = 0;
151
152 if (!enabled) {
153 ++disabled_cpus;
154 return;
155 }
156
157 if (boot_cpu_physical_apicid != -1U)
158 ver = apic_version[boot_cpu_physical_apicid];
159
160 generic_processor_info(id, ver);
161 }
162
163 static int __init
164 acpi_parse_x2apic(struct acpi_subtable_header *header, const unsigned long end)
165 {
166 struct acpi_madt_local_x2apic *processor = NULL;
167
168 processor = (struct acpi_madt_local_x2apic *)header;
169
170 if (BAD_MADT_ENTRY(processor, end))
171 return -EINVAL;
172
173 acpi_table_print_madt_entry(header);
174
175 #ifdef CONFIG_X86_X2APIC
176 /*
177 * We need to register disabled CPU as well to permit
178 * counting disabled CPUs. This allows us to size
179 * cpus_possible_map more accurately, to permit
180 * to not preallocating memory for all NR_CPUS
181 * when we use CPU hotplug.
182 */
183 acpi_register_lapic(processor->local_apic_id, /* APIC ID */
184 processor->lapic_flags & ACPI_MADT_ENABLED);
185 #else
186 printk(KERN_WARNING PREFIX "x2apic entry ignored\n");
187 #endif
188
189 return 0;
190 }
191
192 static int __init
193 acpi_parse_lapic(struct acpi_subtable_header * header, const unsigned long end)
194 {
195 struct acpi_madt_local_apic *processor = NULL;
196
197 processor = (struct acpi_madt_local_apic *)header;
198
199 if (BAD_MADT_ENTRY(processor, end))
200 return -EINVAL;
201
202 acpi_table_print_madt_entry(header);
203
204 /*
205 * We need to register disabled CPU as well to permit
206 * counting disabled CPUs. This allows us to size
207 * cpus_possible_map more accurately, to permit
208 * to not preallocating memory for all NR_CPUS
209 * when we use CPU hotplug.
210 */
211 acpi_register_lapic(processor->id, /* APIC ID */
212 processor->lapic_flags & ACPI_MADT_ENABLED);
213
214 return 0;
215 }
216
217 static int __init
218 acpi_parse_sapic(struct acpi_subtable_header *header, const unsigned long end)
219 {
220 struct acpi_madt_local_sapic *processor = NULL;
221
222 processor = (struct acpi_madt_local_sapic *)header;
223
224 if (BAD_MADT_ENTRY(processor, end))
225 return -EINVAL;
226
227 acpi_table_print_madt_entry(header);
228
229 acpi_register_lapic((processor->id << 8) | processor->eid,/* APIC ID */
230 processor->lapic_flags & ACPI_MADT_ENABLED);
231
232 return 0;
233 }
234
235 static int __init
236 acpi_parse_lapic_addr_ovr(struct acpi_subtable_header * header,
237 const unsigned long end)
238 {
239 struct acpi_madt_local_apic_override *lapic_addr_ovr = NULL;
240
241 lapic_addr_ovr = (struct acpi_madt_local_apic_override *)header;
242
243 if (BAD_MADT_ENTRY(lapic_addr_ovr, end))
244 return -EINVAL;
245
246 acpi_lapic_addr = lapic_addr_ovr->address;
247
248 return 0;
249 }
250
251 static int __init
252 acpi_parse_x2apic_nmi(struct acpi_subtable_header *header,
253 const unsigned long end)
254 {
255 struct acpi_madt_local_x2apic_nmi *x2apic_nmi = NULL;
256
257 x2apic_nmi = (struct acpi_madt_local_x2apic_nmi *)header;
258
259 if (BAD_MADT_ENTRY(x2apic_nmi, end))
260 return -EINVAL;
261
262 acpi_table_print_madt_entry(header);
263
264 if (x2apic_nmi->lint != 1)
265 printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n");
266
267 return 0;
268 }
269
270 static int __init
271 acpi_parse_lapic_nmi(struct acpi_subtable_header * header, const unsigned long end)
272 {
273 struct acpi_madt_local_apic_nmi *lapic_nmi = NULL;
274
275 lapic_nmi = (struct acpi_madt_local_apic_nmi *)header;
276
277 if (BAD_MADT_ENTRY(lapic_nmi, end))
278 return -EINVAL;
279
280 acpi_table_print_madt_entry(header);
281
282 if (lapic_nmi->lint != 1)
283 printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n");
284
285 return 0;
286 }
287
288 #endif /*CONFIG_X86_LOCAL_APIC */
289
290 #ifdef CONFIG_X86_IO_APIC
291
292 static int __init
293 acpi_parse_ioapic(struct acpi_subtable_header * header, const unsigned long end)
294 {
295 struct acpi_madt_io_apic *ioapic = NULL;
296
297 ioapic = (struct acpi_madt_io_apic *)header;
298
299 if (BAD_MADT_ENTRY(ioapic, end))
300 return -EINVAL;
301
302 acpi_table_print_madt_entry(header);
303
304 mp_register_ioapic(ioapic->id,
305 ioapic->address, ioapic->global_irq_base);
306
307 return 0;
308 }
309
310 /*
311 * Parse Interrupt Source Override for the ACPI SCI
312 */
313 static void __init acpi_sci_ioapic_setup(u32 gsi, u16 polarity, u16 trigger)
314 {
315 if (trigger == 0) /* compatible SCI trigger is level */
316 trigger = 3;
317
318 if (polarity == 0) /* compatible SCI polarity is low */
319 polarity = 3;
320
321 /* Command-line over-ride via acpi_sci= */
322 if (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK)
323 trigger = (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) >> 2;
324
325 if (acpi_sci_flags & ACPI_MADT_POLARITY_MASK)
326 polarity = acpi_sci_flags & ACPI_MADT_POLARITY_MASK;
327
328 /*
329 * mp_config_acpi_legacy_irqs() already setup IRQs < 16
330 * If GSI is < 16, this will update its flags,
331 * else it will create a new mp_irqs[] entry.
332 */
333 mp_override_legacy_irq(gsi, polarity, trigger, gsi);
334
335 /*
336 * stash over-ride to indicate we've been here
337 * and for later update of acpi_gbl_FADT
338 */
339 acpi_sci_override_gsi = gsi;
340 return;
341 }
342
343 static int __init
344 acpi_parse_int_src_ovr(struct acpi_subtable_header * header,
345 const unsigned long end)
346 {
347 struct acpi_madt_interrupt_override *intsrc = NULL;
348
349 intsrc = (struct acpi_madt_interrupt_override *)header;
350
351 if (BAD_MADT_ENTRY(intsrc, end))
352 return -EINVAL;
353
354 acpi_table_print_madt_entry(header);
355
356 if (intsrc->source_irq == acpi_gbl_FADT.sci_interrupt) {
357 acpi_sci_ioapic_setup(intsrc->global_irq,
358 intsrc->inti_flags & ACPI_MADT_POLARITY_MASK,
359 (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2);
360 return 0;
361 }
362
363 if (acpi_skip_timer_override &&
364 intsrc->source_irq == 0 && intsrc->global_irq == 2) {
365 printk(PREFIX "BIOS IRQ0 pin2 override ignored.\n");
366 return 0;
367 }
368
369 mp_override_legacy_irq(intsrc->source_irq,
370 intsrc->inti_flags & ACPI_MADT_POLARITY_MASK,
371 (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2,
372 intsrc->global_irq);
373
374 return 0;
375 }
376
377 static int __init
378 acpi_parse_nmi_src(struct acpi_subtable_header * header, const unsigned long end)
379 {
380 struct acpi_madt_nmi_source *nmi_src = NULL;
381
382 nmi_src = (struct acpi_madt_nmi_source *)header;
383
384 if (BAD_MADT_ENTRY(nmi_src, end))
385 return -EINVAL;
386
387 acpi_table_print_madt_entry(header);
388
389 /* TBD: Support nimsrc entries? */
390
391 return 0;
392 }
393
394 #endif /* CONFIG_X86_IO_APIC */
395
396 /*
397 * acpi_pic_sci_set_trigger()
398 *
399 * use ELCR to set PIC-mode trigger type for SCI
400 *
401 * If a PIC-mode SCI is not recognized or gives spurious IRQ7's
402 * it may require Edge Trigger -- use "acpi_sci=edge"
403 *
404 * Port 0x4d0-4d1 are ECLR1 and ECLR2, the Edge/Level Control Registers
405 * for the 8259 PIC. bit[n] = 1 means irq[n] is Level, otherwise Edge.
406 * ECLR1 is IRQs 0-7 (IRQ 0, 1, 2 must be 0)
407 * ECLR2 is IRQs 8-15 (IRQ 8, 13 must be 0)
408 */
409
410 void __init acpi_pic_sci_set_trigger(unsigned int irq, u16 trigger)
411 {
412 unsigned int mask = 1 << irq;
413 unsigned int old, new;
414
415 /* Real old ELCR mask */
416 old = inb(0x4d0) | (inb(0x4d1) << 8);
417
418 /*
419 * If we use ACPI to set PCI IRQs, then we should clear ELCR
420 * since we will set it correctly as we enable the PCI irq
421 * routing.
422 */
423 new = acpi_noirq ? old : 0;
424
425 /*
426 * Update SCI information in the ELCR, it isn't in the PCI
427 * routing tables..
428 */
429 switch (trigger) {
430 case 1: /* Edge - clear */
431 new &= ~mask;
432 break;
433 case 3: /* Level - set */
434 new |= mask;
435 break;
436 }
437
438 if (old == new)
439 return;
440
441 printk(PREFIX "setting ELCR to %04x (from %04x)\n", new, old);
442 outb(new, 0x4d0);
443 outb(new >> 8, 0x4d1);
444 }
445
446 int acpi_gsi_to_irq(u32 gsi, unsigned int *irq)
447 {
448 *irq = gsi;
449 return 0;
450 }
451
452 /*
453 * success: return IRQ number (>=0)
454 * failure: return < 0
455 */
456 int acpi_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity)
457 {
458 unsigned int irq;
459 unsigned int plat_gsi = gsi;
460
461 #ifdef CONFIG_PCI
462 /*
463 * Make sure all (legacy) PCI IRQs are set as level-triggered.
464 */
465 if (acpi_irq_model == ACPI_IRQ_MODEL_PIC) {
466 if (trigger == ACPI_LEVEL_SENSITIVE)
467 eisa_set_level_irq(gsi);
468 }
469 #endif
470
471 #ifdef CONFIG_X86_IO_APIC
472 if (acpi_irq_model == ACPI_IRQ_MODEL_IOAPIC) {
473 plat_gsi = mp_register_gsi(dev, gsi, trigger, polarity);
474 }
475 #endif
476 acpi_gsi_to_irq(plat_gsi, &irq);
477 return irq;
478 }
479
480 /*
481 * ACPI based hotplug support for CPU
482 */
483 #ifdef CONFIG_ACPI_HOTPLUG_CPU
484
485 static int __cpuinit _acpi_map_lsapic(acpi_handle handle, int *pcpu)
486 {
487 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
488 union acpi_object *obj;
489 struct acpi_madt_local_apic *lapic;
490 cpumask_var_t tmp_map, new_map;
491 u8 physid;
492 int cpu;
493 int retval = -ENOMEM;
494
495 if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer)))
496 return -EINVAL;
497
498 if (!buffer.length || !buffer.pointer)
499 return -EINVAL;
500
501 obj = buffer.pointer;
502 if (obj->type != ACPI_TYPE_BUFFER ||
503 obj->buffer.length < sizeof(*lapic)) {
504 kfree(buffer.pointer);
505 return -EINVAL;
506 }
507
508 lapic = (struct acpi_madt_local_apic *)obj->buffer.pointer;
509
510 if (lapic->header.type != ACPI_MADT_TYPE_LOCAL_APIC ||
511 !(lapic->lapic_flags & ACPI_MADT_ENABLED)) {
512 kfree(buffer.pointer);
513 return -EINVAL;
514 }
515
516 physid = lapic->id;
517
518 kfree(buffer.pointer);
519 buffer.length = ACPI_ALLOCATE_BUFFER;
520 buffer.pointer = NULL;
521
522 if (!alloc_cpumask_var(&tmp_map, GFP_KERNEL))
523 goto out;
524
525 if (!alloc_cpumask_var(&new_map, GFP_KERNEL))
526 goto free_tmp_map;
527
528 cpumask_copy(tmp_map, cpu_present_mask);
529 acpi_register_lapic(physid, lapic->lapic_flags & ACPI_MADT_ENABLED);
530
531 /*
532 * If mp_register_lapic successfully generates a new logical cpu
533 * number, then the following will get us exactly what was mapped
534 */
535 cpumask_andnot(new_map, cpu_present_mask, tmp_map);
536 if (cpumask_empty(new_map)) {
537 printk ("Unable to map lapic to logical cpu number\n");
538 retval = -EINVAL;
539 goto free_new_map;
540 }
541
542 cpu = cpumask_first(new_map);
543
544 *pcpu = cpu;
545 retval = 0;
546
547 free_new_map:
548 free_cpumask_var(new_map);
549 free_tmp_map:
550 free_cpumask_var(tmp_map);
551 out:
552 return retval;
553 }
554
555 /* wrapper to silence section mismatch warning */
556 int __ref acpi_map_lsapic(acpi_handle handle, int *pcpu)
557 {
558 return _acpi_map_lsapic(handle, pcpu);
559 }
560 EXPORT_SYMBOL(acpi_map_lsapic);
561
562 int acpi_unmap_lsapic(int cpu)
563 {
564 per_cpu(x86_cpu_to_apicid, cpu) = -1;
565 set_cpu_present(cpu, false);
566 num_processors--;
567
568 return (0);
569 }
570
571 EXPORT_SYMBOL(acpi_unmap_lsapic);
572 #endif /* CONFIG_ACPI_HOTPLUG_CPU */
573
574 int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base)
575 {
576 /* TBD */
577 return -EINVAL;
578 }
579
580 EXPORT_SYMBOL(acpi_register_ioapic);
581
582 int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base)
583 {
584 /* TBD */
585 return -EINVAL;
586 }
587
588 EXPORT_SYMBOL(acpi_unregister_ioapic);
589
590 static int __init acpi_parse_sbf(struct acpi_table_header *table)
591 {
592 struct acpi_table_boot *sb;
593
594 sb = (struct acpi_table_boot *)table;
595 if (!sb) {
596 printk(KERN_WARNING PREFIX "Unable to map SBF\n");
597 return -ENODEV;
598 }
599
600 sbf_port = sb->cmos_index; /* Save CMOS port */
601
602 return 0;
603 }
604
605 #ifdef CONFIG_HPET_TIMER
606 #include <asm/hpet.h>
607
608 static struct __initdata resource *hpet_res;
609
610 static int __init acpi_parse_hpet(struct acpi_table_header *table)
611 {
612 struct acpi_table_hpet *hpet_tbl;
613
614 hpet_tbl = (struct acpi_table_hpet *)table;
615 if (!hpet_tbl) {
616 printk(KERN_WARNING PREFIX "Unable to map HPET\n");
617 return -ENODEV;
618 }
619
620 if (hpet_tbl->address.space_id != ACPI_SPACE_MEM) {
621 printk(KERN_WARNING PREFIX "HPET timers must be located in "
622 "memory.\n");
623 return -1;
624 }
625
626 hpet_address = hpet_tbl->address.address;
627
628 /*
629 * Some broken BIOSes advertise HPET at 0x0. We really do not
630 * want to allocate a resource there.
631 */
632 if (!hpet_address) {
633 printk(KERN_WARNING PREFIX
634 "HPET id: %#x base: %#lx is invalid\n",
635 hpet_tbl->id, hpet_address);
636 return 0;
637 }
638 #ifdef CONFIG_X86_64
639 /*
640 * Some even more broken BIOSes advertise HPET at
641 * 0xfed0000000000000 instead of 0xfed00000. Fix it up and add
642 * some noise:
643 */
644 if (hpet_address == 0xfed0000000000000UL) {
645 if (!hpet_force_user) {
646 printk(KERN_WARNING PREFIX "HPET id: %#x "
647 "base: 0xfed0000000000000 is bogus\n "
648 "try hpet=force on the kernel command line to "
649 "fix it up to 0xfed00000.\n", hpet_tbl->id);
650 hpet_address = 0;
651 return 0;
652 }
653 printk(KERN_WARNING PREFIX
654 "HPET id: %#x base: 0xfed0000000000000 fixed up "
655 "to 0xfed00000.\n", hpet_tbl->id);
656 hpet_address >>= 32;
657 }
658 #endif
659 printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n",
660 hpet_tbl->id, hpet_address);
661
662 /*
663 * Allocate and initialize the HPET firmware resource for adding into
664 * the resource tree during the lateinit timeframe.
665 */
666 #define HPET_RESOURCE_NAME_SIZE 9
667 hpet_res = alloc_bootmem(sizeof(*hpet_res) + HPET_RESOURCE_NAME_SIZE);
668
669 hpet_res->name = (void *)&hpet_res[1];
670 hpet_res->flags = IORESOURCE_MEM;
671 snprintf((char *)hpet_res->name, HPET_RESOURCE_NAME_SIZE, "HPET %u",
672 hpet_tbl->sequence);
673
674 hpet_res->start = hpet_address;
675 hpet_res->end = hpet_address + (1 * 1024) - 1;
676
677 return 0;
678 }
679
680 /*
681 * hpet_insert_resource inserts the HPET resources used into the resource
682 * tree.
683 */
684 static __init int hpet_insert_resource(void)
685 {
686 if (!hpet_res)
687 return 1;
688
689 return insert_resource(&iomem_resource, hpet_res);
690 }
691
692 late_initcall(hpet_insert_resource);
693
694 #else
695 #define acpi_parse_hpet NULL
696 #endif
697
698 static int __init acpi_parse_fadt(struct acpi_table_header *table)
699 {
700
701 #ifdef CONFIG_X86_PM_TIMER
702 /* detect the location of the ACPI PM Timer */
703 if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID) {
704 /* FADT rev. 2 */
705 if (acpi_gbl_FADT.xpm_timer_block.space_id !=
706 ACPI_ADR_SPACE_SYSTEM_IO)
707 return 0;
708
709 pmtmr_ioport = acpi_gbl_FADT.xpm_timer_block.address;
710 /*
711 * "X" fields are optional extensions to the original V1.0
712 * fields, so we must selectively expand V1.0 fields if the
713 * corresponding X field is zero.
714 */
715 if (!pmtmr_ioport)
716 pmtmr_ioport = acpi_gbl_FADT.pm_timer_block;
717 } else {
718 /* FADT rev. 1 */
719 pmtmr_ioport = acpi_gbl_FADT.pm_timer_block;
720 }
721 if (pmtmr_ioport)
722 printk(KERN_INFO PREFIX "PM-Timer IO Port: %#x\n",
723 pmtmr_ioport);
724 #endif
725 return 0;
726 }
727
728 #ifdef CONFIG_X86_LOCAL_APIC
729 /*
730 * Parse LAPIC entries in MADT
731 * returns 0 on success, < 0 on error
732 */
733
734 static void __init acpi_register_lapic_address(unsigned long address)
735 {
736 mp_lapic_addr = address;
737
738 set_fixmap_nocache(FIX_APIC_BASE, address);
739 if (boot_cpu_physical_apicid == -1U) {
740 boot_cpu_physical_apicid = read_apic_id();
741 apic_version[boot_cpu_physical_apicid] =
742 GET_APIC_VERSION(apic_read(APIC_LVR));
743 }
744 }
745
746 static int __init early_acpi_parse_madt_lapic_addr_ovr(void)
747 {
748 int count;
749
750 if (!cpu_has_apic)
751 return -ENODEV;
752
753 /*
754 * Note that the LAPIC address is obtained from the MADT (32-bit value)
755 * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value).
756 */
757
758 count =
759 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE,
760 acpi_parse_lapic_addr_ovr, 0);
761 if (count < 0) {
762 printk(KERN_ERR PREFIX
763 "Error parsing LAPIC address override entry\n");
764 return count;
765 }
766
767 acpi_register_lapic_address(acpi_lapic_addr);
768
769 return count;
770 }
771
772 static int __init acpi_parse_madt_lapic_entries(void)
773 {
774 int count;
775 int x2count = 0;
776
777 if (!cpu_has_apic)
778 return -ENODEV;
779
780 /*
781 * Note that the LAPIC address is obtained from the MADT (32-bit value)
782 * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value).
783 */
784
785 count =
786 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE,
787 acpi_parse_lapic_addr_ovr, 0);
788 if (count < 0) {
789 printk(KERN_ERR PREFIX
790 "Error parsing LAPIC address override entry\n");
791 return count;
792 }
793
794 acpi_register_lapic_address(acpi_lapic_addr);
795
796 count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_SAPIC,
797 acpi_parse_sapic, MAX_APICS);
798
799 if (!count) {
800 x2count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC,
801 acpi_parse_x2apic, MAX_APICS);
802 count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC,
803 acpi_parse_lapic, MAX_APICS);
804 }
805 if (!count && !x2count) {
806 printk(KERN_ERR PREFIX "No LAPIC entries present\n");
807 /* TBD: Cleanup to allow fallback to MPS */
808 return -ENODEV;
809 } else if (count < 0 || x2count < 0) {
810 printk(KERN_ERR PREFIX "Error parsing LAPIC entry\n");
811 /* TBD: Cleanup to allow fallback to MPS */
812 return count;
813 }
814
815 x2count =
816 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC_NMI,
817 acpi_parse_x2apic_nmi, 0);
818 count =
819 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI, acpi_parse_lapic_nmi, 0);
820 if (count < 0 || x2count < 0) {
821 printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n");
822 /* TBD: Cleanup to allow fallback to MPS */
823 return count;
824 }
825 return 0;
826 }
827 #endif /* CONFIG_X86_LOCAL_APIC */
828
829 #ifdef CONFIG_X86_IO_APIC
830 #define MP_ISA_BUS 0
831
832 #ifdef CONFIG_X86_ES7000
833 extern int es7000_plat;
834 #endif
835
836 static struct {
837 int gsi_base;
838 int gsi_end;
839 } mp_ioapic_routing[MAX_IO_APICS];
840
841 int mp_find_ioapic(int gsi)
842 {
843 int i = 0;
844
845 /* Find the IOAPIC that manages this GSI. */
846 for (i = 0; i < nr_ioapics; i++) {
847 if ((gsi >= mp_ioapic_routing[i].gsi_base)
848 && (gsi <= mp_ioapic_routing[i].gsi_end))
849 return i;
850 }
851
852 printk(KERN_ERR "ERROR: Unable to locate IOAPIC for GSI %d\n", gsi);
853 return -1;
854 }
855
856 int mp_find_ioapic_pin(int ioapic, int gsi)
857 {
858 if (WARN_ON(ioapic == -1))
859 return -1;
860 if (WARN_ON(gsi > mp_ioapic_routing[ioapic].gsi_end))
861 return -1;
862
863 return gsi - mp_ioapic_routing[ioapic].gsi_base;
864 }
865
866 static u8 __init uniq_ioapic_id(u8 id)
867 {
868 #ifdef CONFIG_X86_32
869 if ((boot_cpu_data.x86_vendor == X86_VENDOR_INTEL) &&
870 !APIC_XAPIC(apic_version[boot_cpu_physical_apicid]))
871 return io_apic_get_unique_id(nr_ioapics, id);
872 else
873 return id;
874 #else
875 int i;
876 DECLARE_BITMAP(used, 256);
877 bitmap_zero(used, 256);
878 for (i = 0; i < nr_ioapics; i++) {
879 struct mpc_ioapic *ia = &mp_ioapics[i];
880 __set_bit(ia->apicid, used);
881 }
882 if (!test_bit(id, used))
883 return id;
884 return find_first_zero_bit(used, 256);
885 #endif
886 }
887
888 static int bad_ioapic(unsigned long address)
889 {
890 if (nr_ioapics >= MAX_IO_APICS) {
891 printk(KERN_ERR "ERROR: Max # of I/O APICs (%d) exceeded "
892 "(found %d)\n", MAX_IO_APICS, nr_ioapics);
893 panic("Recompile kernel with bigger MAX_IO_APICS!\n");
894 }
895 if (!address) {
896 printk(KERN_ERR "WARNING: Bogus (zero) I/O APIC address"
897 " found in table, skipping!\n");
898 return 1;
899 }
900 return 0;
901 }
902
903 void __init mp_register_ioapic(int id, u32 address, u32 gsi_base)
904 {
905 int idx = 0;
906
907 if (bad_ioapic(address))
908 return;
909
910 idx = nr_ioapics;
911
912 mp_ioapics[idx].type = MP_IOAPIC;
913 mp_ioapics[idx].flags = MPC_APIC_USABLE;
914 mp_ioapics[idx].apicaddr = address;
915
916 set_fixmap_nocache(FIX_IO_APIC_BASE_0 + idx, address);
917 mp_ioapics[idx].apicid = uniq_ioapic_id(id);
918 mp_ioapics[idx].apicver = io_apic_get_version(idx);
919
920 /*
921 * Build basic GSI lookup table to facilitate gsi->io_apic lookups
922 * and to prevent reprogramming of IOAPIC pins (PCI GSIs).
923 */
924 mp_ioapic_routing[idx].gsi_base = gsi_base;
925 mp_ioapic_routing[idx].gsi_end = gsi_base +
926 io_apic_get_redir_entries(idx);
927
928 printk(KERN_INFO "IOAPIC[%d]: apic_id %d, version %d, address 0x%x, "
929 "GSI %d-%d\n", idx, mp_ioapics[idx].apicid,
930 mp_ioapics[idx].apicver, mp_ioapics[idx].apicaddr,
931 mp_ioapic_routing[idx].gsi_base, mp_ioapic_routing[idx].gsi_end);
932
933 nr_ioapics++;
934 }
935
936 int __init acpi_probe_gsi(void)
937 {
938 int idx;
939 int gsi;
940 int max_gsi = 0;
941
942 if (acpi_disabled)
943 return 0;
944
945 if (!acpi_ioapic)
946 return 0;
947
948 max_gsi = 0;
949 for (idx = 0; idx < nr_ioapics; idx++) {
950 gsi = mp_ioapic_routing[idx].gsi_end;
951
952 if (gsi > max_gsi)
953 max_gsi = gsi;
954 }
955
956 return max_gsi + 1;
957 }
958
959 static void assign_to_mp_irq(struct mpc_intsrc *m,
960 struct mpc_intsrc *mp_irq)
961 {
962 memcpy(mp_irq, m, sizeof(struct mpc_intsrc));
963 }
964
965 static int mp_irq_cmp(struct mpc_intsrc *mp_irq,
966 struct mpc_intsrc *m)
967 {
968 return memcmp(mp_irq, m, sizeof(struct mpc_intsrc));
969 }
970
971 static void save_mp_irq(struct mpc_intsrc *m)
972 {
973 int i;
974
975 for (i = 0; i < mp_irq_entries; i++) {
976 if (!mp_irq_cmp(&mp_irqs[i], m))
977 return;
978 }
979
980 assign_to_mp_irq(m, &mp_irqs[mp_irq_entries]);
981 if (++mp_irq_entries == MAX_IRQ_SOURCES)
982 panic("Max # of irq sources exceeded!!\n");
983 }
984
985 void __init mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger, u32 gsi)
986 {
987 int ioapic;
988 int pin;
989 struct mpc_intsrc mp_irq;
990
991 /*
992 * Convert 'gsi' to 'ioapic.pin'.
993 */
994 ioapic = mp_find_ioapic(gsi);
995 if (ioapic < 0)
996 return;
997 pin = mp_find_ioapic_pin(ioapic, gsi);
998
999 /*
1000 * TBD: This check is for faulty timer entries, where the override
1001 * erroneously sets the trigger to level, resulting in a HUGE
1002 * increase of timer interrupts!
1003 */
1004 if ((bus_irq == 0) && (trigger == 3))
1005 trigger = 1;
1006
1007 mp_irq.type = MP_INTSRC;
1008 mp_irq.irqtype = mp_INT;
1009 mp_irq.irqflag = (trigger << 2) | polarity;
1010 mp_irq.srcbus = MP_ISA_BUS;
1011 mp_irq.srcbusirq = bus_irq; /* IRQ */
1012 mp_irq.dstapic = mp_ioapics[ioapic].apicid; /* APIC ID */
1013 mp_irq.dstirq = pin; /* INTIN# */
1014
1015 save_mp_irq(&mp_irq);
1016 }
1017
1018 void __init mp_config_acpi_legacy_irqs(void)
1019 {
1020 int i;
1021 int ioapic;
1022 unsigned int dstapic;
1023 struct mpc_intsrc mp_irq;
1024
1025 #if defined (CONFIG_MCA) || defined (CONFIG_EISA)
1026 /*
1027 * Fabricate the legacy ISA bus (bus #31).
1028 */
1029 mp_bus_id_to_type[MP_ISA_BUS] = MP_BUS_ISA;
1030 #endif
1031 set_bit(MP_ISA_BUS, mp_bus_not_pci);
1032 pr_debug("Bus #%d is ISA\n", MP_ISA_BUS);
1033
1034 #ifdef CONFIG_X86_ES7000
1035 /*
1036 * Older generations of ES7000 have no legacy identity mappings
1037 */
1038 if (es7000_plat == 1)
1039 return;
1040 #endif
1041
1042 /*
1043 * Locate the IOAPIC that manages the ISA IRQs (0-15).
1044 */
1045 ioapic = mp_find_ioapic(0);
1046 if (ioapic < 0)
1047 return;
1048 dstapic = mp_ioapics[ioapic].apicid;
1049
1050 /*
1051 * Use the default configuration for the IRQs 0-15. Unless
1052 * overridden by (MADT) interrupt source override entries.
1053 */
1054 for (i = 0; i < 16; i++) {
1055 int idx;
1056
1057 for (idx = 0; idx < mp_irq_entries; idx++) {
1058 struct mpc_intsrc *irq = mp_irqs + idx;
1059
1060 /* Do we already have a mapping for this ISA IRQ? */
1061 if (irq->srcbus == MP_ISA_BUS && irq->srcbusirq == i)
1062 break;
1063
1064 /* Do we already have a mapping for this IOAPIC pin */
1065 if (irq->dstapic == dstapic && irq->dstirq == i)
1066 break;
1067 }
1068
1069 if (idx != mp_irq_entries) {
1070 printk(KERN_DEBUG "ACPI: IRQ%d used by override.\n", i);
1071 continue; /* IRQ already used */
1072 }
1073
1074 mp_irq.type = MP_INTSRC;
1075 mp_irq.irqflag = 0; /* Conforming */
1076 mp_irq.srcbus = MP_ISA_BUS;
1077 mp_irq.dstapic = dstapic;
1078 mp_irq.irqtype = mp_INT;
1079 mp_irq.srcbusirq = i; /* Identity mapped */
1080 mp_irq.dstirq = i;
1081
1082 save_mp_irq(&mp_irq);
1083 }
1084 }
1085
1086 static int mp_config_acpi_gsi(struct device *dev, u32 gsi, int trigger,
1087 int polarity)
1088 {
1089 #ifdef CONFIG_X86_MPPARSE
1090 struct mpc_intsrc mp_irq;
1091 struct pci_dev *pdev;
1092 unsigned char number;
1093 unsigned int devfn;
1094 int ioapic;
1095 u8 pin;
1096
1097 if (!acpi_ioapic)
1098 return 0;
1099 if (!dev)
1100 return 0;
1101 if (dev->bus != &pci_bus_type)
1102 return 0;
1103
1104 pdev = to_pci_dev(dev);
1105 number = pdev->bus->number;
1106 devfn = pdev->devfn;
1107 pin = pdev->pin;
1108 /* print the entry should happen on mptable identically */
1109 mp_irq.type = MP_INTSRC;
1110 mp_irq.irqtype = mp_INT;
1111 mp_irq.irqflag = (trigger == ACPI_EDGE_SENSITIVE ? 4 : 0x0c) |
1112 (polarity == ACPI_ACTIVE_HIGH ? 1 : 3);
1113 mp_irq.srcbus = number;
1114 mp_irq.srcbusirq = (((devfn >> 3) & 0x1f) << 2) | ((pin - 1) & 3);
1115 ioapic = mp_find_ioapic(gsi);
1116 mp_irq.dstapic = mp_ioapics[ioapic].apicid;
1117 mp_irq.dstirq = mp_find_ioapic_pin(ioapic, gsi);
1118
1119 save_mp_irq(&mp_irq);
1120 #endif
1121 return 0;
1122 }
1123
1124 int mp_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity)
1125 {
1126 int ioapic;
1127 int ioapic_pin;
1128 struct io_apic_irq_attr irq_attr;
1129
1130 if (acpi_irq_model != ACPI_IRQ_MODEL_IOAPIC)
1131 return gsi;
1132
1133 /* Don't set up the ACPI SCI because it's already set up */
1134 if (acpi_gbl_FADT.sci_interrupt == gsi)
1135 return gsi;
1136
1137 ioapic = mp_find_ioapic(gsi);
1138 if (ioapic < 0) {
1139 printk(KERN_WARNING "No IOAPIC for GSI %u\n", gsi);
1140 return gsi;
1141 }
1142
1143 ioapic_pin = mp_find_ioapic_pin(ioapic, gsi);
1144
1145 #ifdef CONFIG_X86_32
1146 if (ioapic_renumber_irq)
1147 gsi = ioapic_renumber_irq(ioapic, gsi);
1148 #endif
1149
1150 if (ioapic_pin > MP_MAX_IOAPIC_PIN) {
1151 printk(KERN_ERR "Invalid reference to IOAPIC pin "
1152 "%d-%d\n", mp_ioapics[ioapic].apicid,
1153 ioapic_pin);
1154 return gsi;
1155 }
1156
1157 if (enable_update_mptable)
1158 mp_config_acpi_gsi(dev, gsi, trigger, polarity);
1159
1160 set_io_apic_irq_attr(&irq_attr, ioapic, ioapic_pin,
1161 trigger == ACPI_EDGE_SENSITIVE ? 0 : 1,
1162 polarity == ACPI_ACTIVE_HIGH ? 0 : 1);
1163 io_apic_set_pci_routing(dev, gsi, &irq_attr);
1164
1165 return gsi;
1166 }
1167
1168 /*
1169 * Parse IOAPIC related entries in MADT
1170 * returns 0 on success, < 0 on error
1171 */
1172 static int __init acpi_parse_madt_ioapic_entries(void)
1173 {
1174 int count;
1175
1176 /*
1177 * ACPI interpreter is required to complete interrupt setup,
1178 * so if it is off, don't enumerate the io-apics with ACPI.
1179 * If MPS is present, it will handle them,
1180 * otherwise the system will stay in PIC mode
1181 */
1182 if (acpi_disabled || acpi_noirq) {
1183 return -ENODEV;
1184 }
1185
1186 if (!cpu_has_apic)
1187 return -ENODEV;
1188
1189 /*
1190 * if "noapic" boot option, don't look for IO-APICs
1191 */
1192 if (skip_ioapic_setup) {
1193 printk(KERN_INFO PREFIX "Skipping IOAPIC probe "
1194 "due to 'noapic' option.\n");
1195 return -ENODEV;
1196 }
1197
1198 count =
1199 acpi_table_parse_madt(ACPI_MADT_TYPE_IO_APIC, acpi_parse_ioapic,
1200 MAX_IO_APICS);
1201 if (!count) {
1202 printk(KERN_ERR PREFIX "No IOAPIC entries present\n");
1203 return -ENODEV;
1204 } else if (count < 0) {
1205 printk(KERN_ERR PREFIX "Error parsing IOAPIC entry\n");
1206 return count;
1207 }
1208
1209 count =
1210 acpi_table_parse_madt(ACPI_MADT_TYPE_INTERRUPT_OVERRIDE, acpi_parse_int_src_ovr,
1211 nr_irqs);
1212 if (count < 0) {
1213 printk(KERN_ERR PREFIX
1214 "Error parsing interrupt source overrides entry\n");
1215 /* TBD: Cleanup to allow fallback to MPS */
1216 return count;
1217 }
1218
1219 /*
1220 * If BIOS did not supply an INT_SRC_OVR for the SCI
1221 * pretend we got one so we can set the SCI flags.
1222 */
1223 if (!acpi_sci_override_gsi)
1224 acpi_sci_ioapic_setup(acpi_gbl_FADT.sci_interrupt, 0, 0);
1225
1226 /* Fill in identity legacy mapings where no override */
1227 mp_config_acpi_legacy_irqs();
1228
1229 count =
1230 acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE, acpi_parse_nmi_src,
1231 nr_irqs);
1232 if (count < 0) {
1233 printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n");
1234 /* TBD: Cleanup to allow fallback to MPS */
1235 return count;
1236 }
1237
1238 return 0;
1239 }
1240 #else
1241 static inline int acpi_parse_madt_ioapic_entries(void)
1242 {
1243 return -1;
1244 }
1245 #endif /* !CONFIG_X86_IO_APIC */
1246
1247 static void __init early_acpi_process_madt(void)
1248 {
1249 #ifdef CONFIG_X86_LOCAL_APIC
1250 int error;
1251
1252 if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) {
1253
1254 /*
1255 * Parse MADT LAPIC entries
1256 */
1257 error = early_acpi_parse_madt_lapic_addr_ovr();
1258 if (!error) {
1259 acpi_lapic = 1;
1260 smp_found_config = 1;
1261 }
1262 if (error == -EINVAL) {
1263 /*
1264 * Dell Precision Workstation 410, 610 come here.
1265 */
1266 printk(KERN_ERR PREFIX
1267 "Invalid BIOS MADT, disabling ACPI\n");
1268 disable_acpi();
1269 }
1270 }
1271 #endif
1272 }
1273
1274 static void __init acpi_process_madt(void)
1275 {
1276 #ifdef CONFIG_X86_LOCAL_APIC
1277 int error;
1278
1279 if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) {
1280
1281 /*
1282 * Parse MADT LAPIC entries
1283 */
1284 error = acpi_parse_madt_lapic_entries();
1285 if (!error) {
1286 acpi_lapic = 1;
1287
1288 #ifdef CONFIG_X86_BIGSMP
1289 generic_bigsmp_probe();
1290 #endif
1291 /*
1292 * Parse MADT IO-APIC entries
1293 */
1294 error = acpi_parse_madt_ioapic_entries();
1295 if (!error) {
1296 acpi_irq_model = ACPI_IRQ_MODEL_IOAPIC;
1297 acpi_ioapic = 1;
1298
1299 smp_found_config = 1;
1300 if (apic->setup_apic_routing)
1301 apic->setup_apic_routing();
1302 }
1303 }
1304 if (error == -EINVAL) {
1305 /*
1306 * Dell Precision Workstation 410, 610 come here.
1307 */
1308 printk(KERN_ERR PREFIX
1309 "Invalid BIOS MADT, disabling ACPI\n");
1310 disable_acpi();
1311 }
1312 } else {
1313 /*
1314 * ACPI found no MADT, and so ACPI wants UP PIC mode.
1315 * In the event an MPS table was found, forget it.
1316 * Boot with "acpi=off" to use MPS on such a system.
1317 */
1318 if (smp_found_config) {
1319 printk(KERN_WARNING PREFIX
1320 "No APIC-table, disabling MPS\n");
1321 smp_found_config = 0;
1322 }
1323 }
1324
1325 /*
1326 * ACPI supports both logical (e.g. Hyper-Threading) and physical
1327 * processors, where MPS only supports physical.
1328 */
1329 if (acpi_lapic && acpi_ioapic)
1330 printk(KERN_INFO "Using ACPI (MADT) for SMP configuration "
1331 "information\n");
1332 else if (acpi_lapic)
1333 printk(KERN_INFO "Using ACPI for processor (LAPIC) "
1334 "configuration information\n");
1335 #endif
1336 return;
1337 }
1338
1339 static int __init disable_acpi_irq(const struct dmi_system_id *d)
1340 {
1341 if (!acpi_force) {
1342 printk(KERN_NOTICE "%s detected: force use of acpi=noirq\n",
1343 d->ident);
1344 acpi_noirq_set();
1345 }
1346 return 0;
1347 }
1348
1349 static int __init disable_acpi_pci(const struct dmi_system_id *d)
1350 {
1351 if (!acpi_force) {
1352 printk(KERN_NOTICE "%s detected: force use of pci=noacpi\n",
1353 d->ident);
1354 acpi_disable_pci();
1355 }
1356 return 0;
1357 }
1358
1359 static int __init dmi_disable_acpi(const struct dmi_system_id *d)
1360 {
1361 if (!acpi_force) {
1362 printk(KERN_NOTICE "%s detected: acpi off\n", d->ident);
1363 disable_acpi();
1364 } else {
1365 printk(KERN_NOTICE
1366 "Warning: DMI blacklist says broken, but acpi forced\n");
1367 }
1368 return 0;
1369 }
1370
1371 /*
1372 * Limit ACPI to CPU enumeration for HT
1373 */
1374 static int __init force_acpi_ht(const struct dmi_system_id *d)
1375 {
1376 if (!acpi_force) {
1377 printk(KERN_NOTICE "%s detected: force use of acpi=ht\n",
1378 d->ident);
1379 disable_acpi();
1380 acpi_ht = 1;
1381 } else {
1382 printk(KERN_NOTICE
1383 "Warning: acpi=force overrules DMI blacklist: acpi=ht\n");
1384 }
1385 return 0;
1386 }
1387
1388 /*
1389 * Force ignoring BIOS IRQ0 pin2 override
1390 */
1391 static int __init dmi_ignore_irq0_timer_override(const struct dmi_system_id *d)
1392 {
1393 /*
1394 * The ati_ixp4x0_rev() early PCI quirk should have set
1395 * the acpi_skip_timer_override flag already:
1396 */
1397 if (!acpi_skip_timer_override) {
1398 WARN(1, KERN_ERR "ati_ixp4x0 quirk not complete.\n");
1399 pr_notice("%s detected: Ignoring BIOS IRQ0 pin2 override\n",
1400 d->ident);
1401 acpi_skip_timer_override = 1;
1402 }
1403 return 0;
1404 }
1405
1406 /*
1407 * If your system is blacklisted here, but you find that acpi=force
1408 * works for you, please contact linux-acpi@vger.kernel.org
1409 */
1410 static struct dmi_system_id __initdata acpi_dmi_table[] = {
1411 /*
1412 * Boxes that need ACPI disabled
1413 */
1414 {
1415 .callback = dmi_disable_acpi,
1416 .ident = "IBM Thinkpad",
1417 .matches = {
1418 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1419 DMI_MATCH(DMI_BOARD_NAME, "2629H1G"),
1420 },
1421 },
1422
1423 /*
1424 * Boxes that need acpi=ht
1425 */
1426 {
1427 .callback = force_acpi_ht,
1428 .ident = "FSC Primergy T850",
1429 .matches = {
1430 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
1431 DMI_MATCH(DMI_PRODUCT_NAME, "PRIMERGY T850"),
1432 },
1433 },
1434 {
1435 .callback = force_acpi_ht,
1436 .ident = "HP VISUALIZE NT Workstation",
1437 .matches = {
1438 DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"),
1439 DMI_MATCH(DMI_PRODUCT_NAME, "HP VISUALIZE NT Workstation"),
1440 },
1441 },
1442 {
1443 .callback = force_acpi_ht,
1444 .ident = "Compaq Workstation W8000",
1445 .matches = {
1446 DMI_MATCH(DMI_SYS_VENDOR, "Compaq"),
1447 DMI_MATCH(DMI_PRODUCT_NAME, "Workstation W8000"),
1448 },
1449 },
1450 {
1451 .callback = force_acpi_ht,
1452 .ident = "ASUS P2B-DS",
1453 .matches = {
1454 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
1455 DMI_MATCH(DMI_BOARD_NAME, "P2B-DS"),
1456 },
1457 },
1458 {
1459 .callback = force_acpi_ht,
1460 .ident = "ASUS CUR-DLS",
1461 .matches = {
1462 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
1463 DMI_MATCH(DMI_BOARD_NAME, "CUR-DLS"),
1464 },
1465 },
1466 {
1467 .callback = force_acpi_ht,
1468 .ident = "ABIT i440BX-W83977",
1469 .matches = {
1470 DMI_MATCH(DMI_BOARD_VENDOR, "ABIT <http://www.abit.com>"),
1471 DMI_MATCH(DMI_BOARD_NAME, "i440BX-W83977 (BP6)"),
1472 },
1473 },
1474 {
1475 .callback = force_acpi_ht,
1476 .ident = "IBM Bladecenter",
1477 .matches = {
1478 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1479 DMI_MATCH(DMI_BOARD_NAME, "IBM eServer BladeCenter HS20"),
1480 },
1481 },
1482 {
1483 .callback = force_acpi_ht,
1484 .ident = "IBM eServer xSeries 360",
1485 .matches = {
1486 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1487 DMI_MATCH(DMI_BOARD_NAME, "eServer xSeries 360"),
1488 },
1489 },
1490 {
1491 .callback = force_acpi_ht,
1492 .ident = "IBM eserver xSeries 330",
1493 .matches = {
1494 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1495 DMI_MATCH(DMI_BOARD_NAME, "eserver xSeries 330"),
1496 },
1497 },
1498 {
1499 .callback = force_acpi_ht,
1500 .ident = "IBM eserver xSeries 440",
1501 .matches = {
1502 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1503 DMI_MATCH(DMI_PRODUCT_NAME, "eserver xSeries 440"),
1504 },
1505 },
1506
1507 /*
1508 * Boxes that need ACPI PCI IRQ routing disabled
1509 */
1510 {
1511 .callback = disable_acpi_irq,
1512 .ident = "ASUS A7V",
1513 .matches = {
1514 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC"),
1515 DMI_MATCH(DMI_BOARD_NAME, "<A7V>"),
1516 /* newer BIOS, Revision 1011, does work */
1517 DMI_MATCH(DMI_BIOS_VERSION,
1518 "ASUS A7V ACPI BIOS Revision 1007"),
1519 },
1520 },
1521 {
1522 /*
1523 * Latest BIOS for IBM 600E (1.16) has bad pcinum
1524 * for LPC bridge, which is needed for the PCI
1525 * interrupt links to work. DSDT fix is in bug 5966.
1526 * 2645, 2646 model numbers are shared with 600/600E/600X
1527 */
1528 .callback = disable_acpi_irq,
1529 .ident = "IBM Thinkpad 600 Series 2645",
1530 .matches = {
1531 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1532 DMI_MATCH(DMI_BOARD_NAME, "2645"),
1533 },
1534 },
1535 {
1536 .callback = disable_acpi_irq,
1537 .ident = "IBM Thinkpad 600 Series 2646",
1538 .matches = {
1539 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1540 DMI_MATCH(DMI_BOARD_NAME, "2646"),
1541 },
1542 },
1543 /*
1544 * Boxes that need ACPI PCI IRQ routing and PCI scan disabled
1545 */
1546 { /* _BBN 0 bug */
1547 .callback = disable_acpi_pci,
1548 .ident = "ASUS PR-DLS",
1549 .matches = {
1550 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
1551 DMI_MATCH(DMI_BOARD_NAME, "PR-DLS"),
1552 DMI_MATCH(DMI_BIOS_VERSION,
1553 "ASUS PR-DLS ACPI BIOS Revision 1010"),
1554 DMI_MATCH(DMI_BIOS_DATE, "03/21/2003")
1555 },
1556 },
1557 {
1558 .callback = disable_acpi_pci,
1559 .ident = "Acer TravelMate 36x Laptop",
1560 .matches = {
1561 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
1562 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 360"),
1563 },
1564 },
1565 {}
1566 };
1567
1568 /* second table for DMI checks that should run after early-quirks */
1569 static struct dmi_system_id __initdata acpi_dmi_table_late[] = {
1570 /*
1571 * HP laptops which use a DSDT reporting as HP/SB400/10000,
1572 * which includes some code which overrides all temperature
1573 * trip points to 16C if the INTIN2 input of the I/O APIC
1574 * is enabled. This input is incorrectly designated the
1575 * ISA IRQ 0 via an interrupt source override even though
1576 * it is wired to the output of the master 8259A and INTIN0
1577 * is not connected at all. Force ignoring BIOS IRQ0 pin2
1578 * override in that cases.
1579 */
1580 {
1581 .callback = dmi_ignore_irq0_timer_override,
1582 .ident = "HP nx6115 laptop",
1583 .matches = {
1584 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1585 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6115"),
1586 },
1587 },
1588 {
1589 .callback = dmi_ignore_irq0_timer_override,
1590 .ident = "HP NX6125 laptop",
1591 .matches = {
1592 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1593 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6125"),
1594 },
1595 },
1596 {
1597 .callback = dmi_ignore_irq0_timer_override,
1598 .ident = "HP NX6325 laptop",
1599 .matches = {
1600 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1601 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6325"),
1602 },
1603 },
1604 {
1605 .callback = dmi_ignore_irq0_timer_override,
1606 .ident = "HP 6715b laptop",
1607 .matches = {
1608 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1609 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq 6715b"),
1610 },
1611 },
1612 {}
1613 };
1614
1615 /*
1616 * acpi_boot_table_init() and acpi_boot_init()
1617 * called from setup_arch(), always.
1618 * 1. checksums all tables
1619 * 2. enumerates lapics
1620 * 3. enumerates io-apics
1621 *
1622 * acpi_table_init() is separate to allow reading SRAT without
1623 * other side effects.
1624 *
1625 * side effects of acpi_boot_init:
1626 * acpi_lapic = 1 if LAPIC found
1627 * acpi_ioapic = 1 if IOAPIC found
1628 * if (acpi_lapic && acpi_ioapic) smp_found_config = 1;
1629 * if acpi_blacklisted() acpi_disabled = 1;
1630 * acpi_irq_model=...
1631 * ...
1632 *
1633 * return value: (currently ignored)
1634 * 0: success
1635 * !0: failure
1636 */
1637
1638 int __init acpi_boot_table_init(void)
1639 {
1640 int error;
1641
1642 dmi_check_system(acpi_dmi_table);
1643
1644 /*
1645 * If acpi_disabled, bail out
1646 * One exception: acpi=ht continues far enough to enumerate LAPICs
1647 */
1648 if (acpi_disabled && !acpi_ht)
1649 return 1;
1650
1651 /*
1652 * Initialize the ACPI boot-time table parser.
1653 */
1654 error = acpi_table_init();
1655 if (error) {
1656 disable_acpi();
1657 return error;
1658 }
1659
1660 acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf);
1661
1662 /*
1663 * blacklist may disable ACPI entirely
1664 */
1665 error = acpi_blacklisted();
1666 if (error) {
1667 if (acpi_force) {
1668 printk(KERN_WARNING PREFIX "acpi=force override\n");
1669 } else {
1670 printk(KERN_WARNING PREFIX "Disabling ACPI support\n");
1671 disable_acpi();
1672 return error;
1673 }
1674 }
1675
1676 return 0;
1677 }
1678
1679 int __init early_acpi_boot_init(void)
1680 {
1681 /*
1682 * If acpi_disabled, bail out
1683 * One exception: acpi=ht continues far enough to enumerate LAPICs
1684 */
1685 if (acpi_disabled && !acpi_ht)
1686 return 1;
1687
1688 /*
1689 * Process the Multiple APIC Description Table (MADT), if present
1690 */
1691 early_acpi_process_madt();
1692
1693 return 0;
1694 }
1695
1696 int __init acpi_boot_init(void)
1697 {
1698 /* those are executed after early-quirks are executed */
1699 dmi_check_system(acpi_dmi_table_late);
1700
1701 /*
1702 * If acpi_disabled, bail out
1703 * One exception: acpi=ht continues far enough to enumerate LAPICs
1704 */
1705 if (acpi_disabled && !acpi_ht)
1706 return 1;
1707
1708 acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf);
1709
1710 /*
1711 * set sci_int and PM timer address
1712 */
1713 acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt);
1714
1715 /*
1716 * Process the Multiple APIC Description Table (MADT), if present
1717 */
1718 acpi_process_madt();
1719
1720 acpi_table_parse(ACPI_SIG_HPET, acpi_parse_hpet);
1721
1722 return 0;
1723 }
1724
1725 static int __init parse_acpi(char *arg)
1726 {
1727 if (!arg)
1728 return -EINVAL;
1729
1730 /* "acpi=off" disables both ACPI table parsing and interpreter */
1731 if (strcmp(arg, "off") == 0) {
1732 disable_acpi();
1733 }
1734 /* acpi=force to over-ride black-list */
1735 else if (strcmp(arg, "force") == 0) {
1736 acpi_force = 1;
1737 acpi_ht = 1;
1738 acpi_disabled = 0;
1739 }
1740 /* acpi=strict disables out-of-spec workarounds */
1741 else if (strcmp(arg, "strict") == 0) {
1742 acpi_strict = 1;
1743 }
1744 /* Limit ACPI just to boot-time to enable HT */
1745 else if (strcmp(arg, "ht") == 0) {
1746 if (!acpi_force)
1747 disable_acpi();
1748 acpi_ht = 1;
1749 }
1750 /* acpi=rsdt use RSDT instead of XSDT */
1751 else if (strcmp(arg, "rsdt") == 0) {
1752 acpi_rsdt_forced = 1;
1753 }
1754 /* "acpi=noirq" disables ACPI interrupt routing */
1755 else if (strcmp(arg, "noirq") == 0) {
1756 acpi_noirq_set();
1757 } else {
1758 /* Core will printk when we return error. */
1759 return -EINVAL;
1760 }
1761 return 0;
1762 }
1763 early_param("acpi", parse_acpi);
1764
1765 /* FIXME: Using pci= for an ACPI parameter is a travesty. */
1766 static int __init parse_pci(char *arg)
1767 {
1768 if (arg && strcmp(arg, "noacpi") == 0)
1769 acpi_disable_pci();
1770 return 0;
1771 }
1772 early_param("pci", parse_pci);
1773
1774 int __init acpi_mps_check(void)
1775 {
1776 #if defined(CONFIG_X86_LOCAL_APIC) && !defined(CONFIG_X86_MPPARSE)
1777 /* mptable code is not built-in*/
1778 if (acpi_disabled || acpi_noirq) {
1779 printk(KERN_WARNING "MPS support code is not built-in.\n"
1780 "Using acpi=off or acpi=noirq or pci=noacpi "
1781 "may have problem\n");
1782 return 1;
1783 }
1784 #endif
1785 return 0;
1786 }
1787
1788 #ifdef CONFIG_X86_IO_APIC
1789 static int __init parse_acpi_skip_timer_override(char *arg)
1790 {
1791 acpi_skip_timer_override = 1;
1792 return 0;
1793 }
1794 early_param("acpi_skip_timer_override", parse_acpi_skip_timer_override);
1795
1796 static int __init parse_acpi_use_timer_override(char *arg)
1797 {
1798 acpi_use_timer_override = 1;
1799 return 0;
1800 }
1801 early_param("acpi_use_timer_override", parse_acpi_use_timer_override);
1802 #endif /* CONFIG_X86_IO_APIC */
1803
1804 static int __init setup_acpi_sci(char *s)
1805 {
1806 if (!s)
1807 return -EINVAL;
1808 if (!strcmp(s, "edge"))
1809 acpi_sci_flags = ACPI_MADT_TRIGGER_EDGE |
1810 (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK);
1811 else if (!strcmp(s, "level"))
1812 acpi_sci_flags = ACPI_MADT_TRIGGER_LEVEL |
1813 (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK);
1814 else if (!strcmp(s, "high"))
1815 acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_HIGH |
1816 (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK);
1817 else if (!strcmp(s, "low"))
1818 acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_LOW |
1819 (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK);
1820 else
1821 return -EINVAL;
1822 return 0;
1823 }
1824 early_param("acpi_sci", setup_acpi_sci);
1825
1826 int __acpi_acquire_global_lock(unsigned int *lock)
1827 {
1828 unsigned int old, new, val;
1829 do {
1830 old = *lock;
1831 new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1));
1832 val = cmpxchg(lock, old, new);
1833 } while (unlikely (val != old));
1834 return (new < 3) ? -1 : 0;
1835 }
1836
1837 int __acpi_release_global_lock(unsigned int *lock)
1838 {
1839 unsigned int old, new, val;
1840 do {
1841 old = *lock;
1842 new = old & ~0x3;
1843 val = cmpxchg(lock, old, new);
1844 } while (unlikely (val != old));
1845 return old & 0x1;
1846 }
Linux with added FPC-III support