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031f0c23891646880135166c8dc051e07ae5f08a
[GitHub/mt8127/android_kernel_alcatel_ttab.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/pci_x86.h>
40 #include <asm/pgtable.h>
41 #include <asm/io_apic.h>
42 #include <asm/apic.h>
43 #include <asm/io.h>
44 #include <asm/mpspec.h>
45 #include <asm/smp.h>
46
47 static int __initdata acpi_force = 0;
48 u32 acpi_rsdt_forced;
49 int acpi_disabled;
50 EXPORT_SYMBOL(acpi_disabled);
51
52 #ifdef CONFIG_X86_64
53 # include <asm/proto.h>
54 # include <asm/numa_64.h>
55 #endif /* X86 */
56
57 #define BAD_MADT_ENTRY(entry, end) ( \
58 (!entry) || (unsigned long)entry + sizeof(*entry) > end || \
59 ((struct acpi_subtable_header *)entry)->length < sizeof(*entry))
60
61 #define PREFIX "ACPI: "
62
63 int acpi_noirq; /* skip ACPI IRQ initialization */
64 int acpi_pci_disabled; /* skip ACPI PCI scan and IRQ initialization */
65 EXPORT_SYMBOL(acpi_pci_disabled);
66
67 int acpi_lapic;
68 int acpi_ioapic;
69 int acpi_strict;
70
71 u8 acpi_sci_flags __initdata;
72 int acpi_sci_override_gsi __initdata;
73 int acpi_skip_timer_override __initdata;
74 int acpi_use_timer_override __initdata;
75
76 #ifdef CONFIG_X86_LOCAL_APIC
77 static u64 acpi_lapic_addr __initdata = APIC_DEFAULT_PHYS_BASE;
78 #endif
79
80 #ifndef __HAVE_ARCH_CMPXCHG
81 #warning ACPI uses CMPXCHG, i486 and later hardware
82 #endif
83
84 /* --------------------------------------------------------------------------
85 Boot-time Configuration
86 -------------------------------------------------------------------------- */
87
88 /*
89 * The default interrupt routing model is PIC (8259). This gets
90 * overridden if IOAPICs are enumerated (below).
91 */
92 enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_PIC;
93
94
95 /*
96 * ISA irqs by default are the first 16 gsis but can be
97 * any gsi as specified by an interrupt source override.
98 */
99 static u32 isa_irq_to_gsi[NR_IRQS_LEGACY] __read_mostly = {
100 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15
101 };
102
103 static unsigned int gsi_to_irq(unsigned int gsi)
104 {
105 unsigned int irq = gsi + NR_IRQS_LEGACY;
106 unsigned int i;
107
108 for (i = 0; i < NR_IRQS_LEGACY; i++) {
109 if (isa_irq_to_gsi[i] == gsi) {
110 return i;
111 }
112 }
113
114 /* Provide an identity mapping of gsi == irq
115 * except on truly weird platforms that have
116 * non isa irqs in the first 16 gsis.
117 */
118 if (gsi >= NR_IRQS_LEGACY)
119 irq = gsi;
120 else
121 irq = gsi_top + gsi;
122
123 return irq;
124 }
125
126 static u32 irq_to_gsi(int irq)
127 {
128 unsigned int gsi;
129
130 if (irq < NR_IRQS_LEGACY)
131 gsi = isa_irq_to_gsi[irq];
132 else if (irq < gsi_top)
133 gsi = irq;
134 else if (irq < (gsi_top + NR_IRQS_LEGACY))
135 gsi = irq - gsi_top;
136 else
137 gsi = 0xffffffff;
138
139 return gsi;
140 }
141
142 /*
143 * Temporarily use the virtual area starting from FIX_IO_APIC_BASE_END,
144 * to map the target physical address. The problem is that set_fixmap()
145 * provides a single page, and it is possible that the page is not
146 * sufficient.
147 * By using this area, we can map up to MAX_IO_APICS pages temporarily,
148 * i.e. until the next __va_range() call.
149 *
150 * Important Safety Note: The fixed I/O APIC page numbers are *subtracted*
151 * from the fixed base. That's why we start at FIX_IO_APIC_BASE_END and
152 * count idx down while incrementing the phys address.
153 */
154 char *__init __acpi_map_table(unsigned long phys, unsigned long size)
155 {
156
157 if (!phys || !size)
158 return NULL;
159
160 return early_ioremap(phys, size);
161 }
162 void __init __acpi_unmap_table(char *map, unsigned long size)
163 {
164 if (!map || !size)
165 return;
166
167 early_iounmap(map, size);
168 }
169
170 #ifdef CONFIG_X86_LOCAL_APIC
171 static int __init acpi_parse_madt(struct acpi_table_header *table)
172 {
173 struct acpi_table_madt *madt = NULL;
174
175 if (!cpu_has_apic)
176 return -EINVAL;
177
178 madt = (struct acpi_table_madt *)table;
179 if (!madt) {
180 printk(KERN_WARNING PREFIX "Unable to map MADT\n");
181 return -ENODEV;
182 }
183
184 if (madt->address) {
185 acpi_lapic_addr = (u64) madt->address;
186
187 printk(KERN_DEBUG PREFIX "Local APIC address 0x%08x\n",
188 madt->address);
189 }
190
191 default_acpi_madt_oem_check(madt->header.oem_id,
192 madt->header.oem_table_id);
193
194 return 0;
195 }
196
197 static void __cpuinit acpi_register_lapic(int id, u8 enabled)
198 {
199 unsigned int ver = 0;
200
201 if (!enabled) {
202 ++disabled_cpus;
203 return;
204 }
205
206 if (boot_cpu_physical_apicid != -1U)
207 ver = apic_version[boot_cpu_physical_apicid];
208
209 generic_processor_info(id, ver);
210 }
211
212 static int __init
213 acpi_parse_x2apic(struct acpi_subtable_header *header, const unsigned long end)
214 {
215 struct acpi_madt_local_x2apic *processor = NULL;
216
217 processor = (struct acpi_madt_local_x2apic *)header;
218
219 if (BAD_MADT_ENTRY(processor, end))
220 return -EINVAL;
221
222 acpi_table_print_madt_entry(header);
223
224 #ifdef CONFIG_X86_X2APIC
225 /*
226 * We need to register disabled CPU as well to permit
227 * counting disabled CPUs. This allows us to size
228 * cpus_possible_map more accurately, to permit
229 * to not preallocating memory for all NR_CPUS
230 * when we use CPU hotplug.
231 */
232 acpi_register_lapic(processor->local_apic_id, /* APIC ID */
233 processor->lapic_flags & ACPI_MADT_ENABLED);
234 #else
235 printk(KERN_WARNING PREFIX "x2apic entry ignored\n");
236 #endif
237
238 return 0;
239 }
240
241 static int __init
242 acpi_parse_lapic(struct acpi_subtable_header * header, const unsigned long end)
243 {
244 struct acpi_madt_local_apic *processor = NULL;
245
246 processor = (struct acpi_madt_local_apic *)header;
247
248 if (BAD_MADT_ENTRY(processor, end))
249 return -EINVAL;
250
251 acpi_table_print_madt_entry(header);
252
253 /*
254 * We need to register disabled CPU as well to permit
255 * counting disabled CPUs. This allows us to size
256 * cpus_possible_map more accurately, to permit
257 * to not preallocating memory for all NR_CPUS
258 * when we use CPU hotplug.
259 */
260 acpi_register_lapic(processor->id, /* APIC ID */
261 processor->lapic_flags & ACPI_MADT_ENABLED);
262
263 return 0;
264 }
265
266 static int __init
267 acpi_parse_sapic(struct acpi_subtable_header *header, const unsigned long end)
268 {
269 struct acpi_madt_local_sapic *processor = NULL;
270
271 processor = (struct acpi_madt_local_sapic *)header;
272
273 if (BAD_MADT_ENTRY(processor, end))
274 return -EINVAL;
275
276 acpi_table_print_madt_entry(header);
277
278 acpi_register_lapic((processor->id << 8) | processor->eid,/* APIC ID */
279 processor->lapic_flags & ACPI_MADT_ENABLED);
280
281 return 0;
282 }
283
284 static int __init
285 acpi_parse_lapic_addr_ovr(struct acpi_subtable_header * header,
286 const unsigned long end)
287 {
288 struct acpi_madt_local_apic_override *lapic_addr_ovr = NULL;
289
290 lapic_addr_ovr = (struct acpi_madt_local_apic_override *)header;
291
292 if (BAD_MADT_ENTRY(lapic_addr_ovr, end))
293 return -EINVAL;
294
295 acpi_lapic_addr = lapic_addr_ovr->address;
296
297 return 0;
298 }
299
300 static int __init
301 acpi_parse_x2apic_nmi(struct acpi_subtable_header *header,
302 const unsigned long end)
303 {
304 struct acpi_madt_local_x2apic_nmi *x2apic_nmi = NULL;
305
306 x2apic_nmi = (struct acpi_madt_local_x2apic_nmi *)header;
307
308 if (BAD_MADT_ENTRY(x2apic_nmi, end))
309 return -EINVAL;
310
311 acpi_table_print_madt_entry(header);
312
313 if (x2apic_nmi->lint != 1)
314 printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n");
315
316 return 0;
317 }
318
319 static int __init
320 acpi_parse_lapic_nmi(struct acpi_subtable_header * header, const unsigned long end)
321 {
322 struct acpi_madt_local_apic_nmi *lapic_nmi = NULL;
323
324 lapic_nmi = (struct acpi_madt_local_apic_nmi *)header;
325
326 if (BAD_MADT_ENTRY(lapic_nmi, end))
327 return -EINVAL;
328
329 acpi_table_print_madt_entry(header);
330
331 if (lapic_nmi->lint != 1)
332 printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n");
333
334 return 0;
335 }
336
337 #endif /*CONFIG_X86_LOCAL_APIC */
338
339 #ifdef CONFIG_X86_IO_APIC
340
341 static int __init
342 acpi_parse_ioapic(struct acpi_subtable_header * header, const unsigned long end)
343 {
344 struct acpi_madt_io_apic *ioapic = NULL;
345
346 ioapic = (struct acpi_madt_io_apic *)header;
347
348 if (BAD_MADT_ENTRY(ioapic, end))
349 return -EINVAL;
350
351 acpi_table_print_madt_entry(header);
352
353 mp_register_ioapic(ioapic->id,
354 ioapic->address, ioapic->global_irq_base);
355
356 return 0;
357 }
358
359 /*
360 * Parse Interrupt Source Override for the ACPI SCI
361 */
362 static void __init acpi_sci_ioapic_setup(u8 bus_irq, u16 polarity, u16 trigger, u32 gsi)
363 {
364 if (trigger == 0) /* compatible SCI trigger is level */
365 trigger = 3;
366
367 if (polarity == 0) /* compatible SCI polarity is low */
368 polarity = 3;
369
370 /* Command-line over-ride via acpi_sci= */
371 if (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK)
372 trigger = (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) >> 2;
373
374 if (acpi_sci_flags & ACPI_MADT_POLARITY_MASK)
375 polarity = acpi_sci_flags & ACPI_MADT_POLARITY_MASK;
376
377 /*
378 * mp_config_acpi_legacy_irqs() already setup IRQs < 16
379 * If GSI is < 16, this will update its flags,
380 * else it will create a new mp_irqs[] entry.
381 */
382 mp_override_legacy_irq(bus_irq, polarity, trigger, gsi);
383
384 /*
385 * stash over-ride to indicate we've been here
386 * and for later update of acpi_gbl_FADT
387 */
388 acpi_sci_override_gsi = gsi;
389 return;
390 }
391
392 static int __init
393 acpi_parse_int_src_ovr(struct acpi_subtable_header * header,
394 const unsigned long end)
395 {
396 struct acpi_madt_interrupt_override *intsrc = NULL;
397
398 intsrc = (struct acpi_madt_interrupt_override *)header;
399
400 if (BAD_MADT_ENTRY(intsrc, end))
401 return -EINVAL;
402
403 acpi_table_print_madt_entry(header);
404
405 if (intsrc->source_irq == acpi_gbl_FADT.sci_interrupt) {
406 acpi_sci_ioapic_setup(intsrc->source_irq,
407 intsrc->inti_flags & ACPI_MADT_POLARITY_MASK,
408 (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2,
409 intsrc->global_irq);
410 return 0;
411 }
412
413 if (acpi_skip_timer_override &&
414 intsrc->source_irq == 0 && intsrc->global_irq == 2) {
415 printk(PREFIX "BIOS IRQ0 pin2 override ignored.\n");
416 return 0;
417 }
418
419 mp_override_legacy_irq(intsrc->source_irq,
420 intsrc->inti_flags & ACPI_MADT_POLARITY_MASK,
421 (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2,
422 intsrc->global_irq);
423
424 return 0;
425 }
426
427 static int __init
428 acpi_parse_nmi_src(struct acpi_subtable_header * header, const unsigned long end)
429 {
430 struct acpi_madt_nmi_source *nmi_src = NULL;
431
432 nmi_src = (struct acpi_madt_nmi_source *)header;
433
434 if (BAD_MADT_ENTRY(nmi_src, end))
435 return -EINVAL;
436
437 acpi_table_print_madt_entry(header);
438
439 /* TBD: Support nimsrc entries? */
440
441 return 0;
442 }
443
444 #endif /* CONFIG_X86_IO_APIC */
445
446 /*
447 * acpi_pic_sci_set_trigger()
448 *
449 * use ELCR to set PIC-mode trigger type for SCI
450 *
451 * If a PIC-mode SCI is not recognized or gives spurious IRQ7's
452 * it may require Edge Trigger -- use "acpi_sci=edge"
453 *
454 * Port 0x4d0-4d1 are ECLR1 and ECLR2, the Edge/Level Control Registers
455 * for the 8259 PIC. bit[n] = 1 means irq[n] is Level, otherwise Edge.
456 * ECLR1 is IRQs 0-7 (IRQ 0, 1, 2 must be 0)
457 * ECLR2 is IRQs 8-15 (IRQ 8, 13 must be 0)
458 */
459
460 void __init acpi_pic_sci_set_trigger(unsigned int irq, u16 trigger)
461 {
462 unsigned int mask = 1 << irq;
463 unsigned int old, new;
464
465 /* Real old ELCR mask */
466 old = inb(0x4d0) | (inb(0x4d1) << 8);
467
468 /*
469 * If we use ACPI to set PCI IRQs, then we should clear ELCR
470 * since we will set it correctly as we enable the PCI irq
471 * routing.
472 */
473 new = acpi_noirq ? old : 0;
474
475 /*
476 * Update SCI information in the ELCR, it isn't in the PCI
477 * routing tables..
478 */
479 switch (trigger) {
480 case 1: /* Edge - clear */
481 new &= ~mask;
482 break;
483 case 3: /* Level - set */
484 new |= mask;
485 break;
486 }
487
488 if (old == new)
489 return;
490
491 printk(PREFIX "setting ELCR to %04x (from %04x)\n", new, old);
492 outb(new, 0x4d0);
493 outb(new >> 8, 0x4d1);
494 }
495
496 int acpi_gsi_to_irq(u32 gsi, unsigned int *irq)
497 {
498 *irq = gsi_to_irq(gsi);
499
500 #ifdef CONFIG_X86_IO_APIC
501 if (acpi_irq_model == ACPI_IRQ_MODEL_IOAPIC)
502 setup_IO_APIC_irq_extra(gsi);
503 #endif
504
505 return 0;
506 }
507
508 int acpi_isa_irq_to_gsi(unsigned isa_irq, u32 *gsi)
509 {
510 if (isa_irq >= 16)
511 return -1;
512 *gsi = irq_to_gsi(isa_irq);
513 return 0;
514 }
515
516 static int acpi_register_gsi_pic(struct device *dev, u32 gsi,
517 int trigger, int polarity)
518 {
519 #ifdef CONFIG_PCI
520 /*
521 * Make sure all (legacy) PCI IRQs are set as level-triggered.
522 */
523 if (trigger == ACPI_LEVEL_SENSITIVE)
524 eisa_set_level_irq(gsi);
525 #endif
526
527 return gsi;
528 }
529
530 static int acpi_register_gsi_ioapic(struct device *dev, u32 gsi,
531 int trigger, int polarity)
532 {
533 #ifdef CONFIG_X86_IO_APIC
534 gsi = mp_register_gsi(dev, gsi, trigger, polarity);
535 #endif
536
537 return gsi;
538 }
539
540 static int (*__acpi_register_gsi)(struct device *dev, u32 gsi, int trigger, int polarity) = acpi_register_gsi_pic;
541
542 /*
543 * success: return IRQ number (>=0)
544 * failure: return < 0
545 */
546 int acpi_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity)
547 {
548 unsigned int irq;
549 unsigned int plat_gsi = gsi;
550
551 plat_gsi = (*__acpi_register_gsi)(dev, gsi, trigger, polarity);
552 irq = gsi_to_irq(plat_gsi);
553
554 return irq;
555 }
556
557 void __init acpi_set_irq_model_pic(void)
558 {
559 acpi_irq_model = ACPI_IRQ_MODEL_PIC;
560 __acpi_register_gsi = acpi_register_gsi_pic;
561 acpi_ioapic = 0;
562 }
563
564 void __init acpi_set_irq_model_ioapic(void)
565 {
566 acpi_irq_model = ACPI_IRQ_MODEL_IOAPIC;
567 __acpi_register_gsi = acpi_register_gsi_ioapic;
568 acpi_ioapic = 1;
569 }
570
571 /*
572 * ACPI based hotplug support for CPU
573 */
574 #ifdef CONFIG_ACPI_HOTPLUG_CPU
575 #include <acpi/processor.h>
576
577 static void acpi_map_cpu2node(acpi_handle handle, int cpu, int physid)
578 {
579 #ifdef CONFIG_ACPI_NUMA
580 int nid;
581
582 nid = acpi_get_node(handle);
583 if (nid == -1 || !node_online(nid))
584 return;
585 #ifdef CONFIG_X86_64
586 apicid_to_node[physid] = nid;
587 numa_set_node(cpu, nid);
588 #else /* CONFIG_X86_32 */
589 apicid_2_node[physid] = nid;
590 cpu_to_node_map[cpu] = nid;
591 #endif
592
593 #endif
594 }
595
596 static int __cpuinit _acpi_map_lsapic(acpi_handle handle, int *pcpu)
597 {
598 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
599 union acpi_object *obj;
600 struct acpi_madt_local_apic *lapic;
601 cpumask_var_t tmp_map, new_map;
602 u8 physid;
603 int cpu;
604 int retval = -ENOMEM;
605
606 if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer)))
607 return -EINVAL;
608
609 if (!buffer.length || !buffer.pointer)
610 return -EINVAL;
611
612 obj = buffer.pointer;
613 if (obj->type != ACPI_TYPE_BUFFER ||
614 obj->buffer.length < sizeof(*lapic)) {
615 kfree(buffer.pointer);
616 return -EINVAL;
617 }
618
619 lapic = (struct acpi_madt_local_apic *)obj->buffer.pointer;
620
621 if (lapic->header.type != ACPI_MADT_TYPE_LOCAL_APIC ||
622 !(lapic->lapic_flags & ACPI_MADT_ENABLED)) {
623 kfree(buffer.pointer);
624 return -EINVAL;
625 }
626
627 physid = lapic->id;
628
629 kfree(buffer.pointer);
630 buffer.length = ACPI_ALLOCATE_BUFFER;
631 buffer.pointer = NULL;
632
633 if (!alloc_cpumask_var(&tmp_map, GFP_KERNEL))
634 goto out;
635
636 if (!alloc_cpumask_var(&new_map, GFP_KERNEL))
637 goto free_tmp_map;
638
639 cpumask_copy(tmp_map, cpu_present_mask);
640 acpi_register_lapic(physid, lapic->lapic_flags & ACPI_MADT_ENABLED);
641
642 /*
643 * If mp_register_lapic successfully generates a new logical cpu
644 * number, then the following will get us exactly what was mapped
645 */
646 cpumask_andnot(new_map, cpu_present_mask, tmp_map);
647 if (cpumask_empty(new_map)) {
648 printk ("Unable to map lapic to logical cpu number\n");
649 retval = -EINVAL;
650 goto free_new_map;
651 }
652
653 acpi_processor_set_pdc(handle);
654
655 cpu = cpumask_first(new_map);
656 acpi_map_cpu2node(handle, cpu, physid);
657
658 *pcpu = cpu;
659 retval = 0;
660
661 free_new_map:
662 free_cpumask_var(new_map);
663 free_tmp_map:
664 free_cpumask_var(tmp_map);
665 out:
666 return retval;
667 }
668
669 /* wrapper to silence section mismatch warning */
670 int __ref acpi_map_lsapic(acpi_handle handle, int *pcpu)
671 {
672 return _acpi_map_lsapic(handle, pcpu);
673 }
674 EXPORT_SYMBOL(acpi_map_lsapic);
675
676 int acpi_unmap_lsapic(int cpu)
677 {
678 per_cpu(x86_cpu_to_apicid, cpu) = -1;
679 set_cpu_present(cpu, false);
680 num_processors--;
681
682 return (0);
683 }
684
685 EXPORT_SYMBOL(acpi_unmap_lsapic);
686 #endif /* CONFIG_ACPI_HOTPLUG_CPU */
687
688 int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base)
689 {
690 /* TBD */
691 return -EINVAL;
692 }
693
694 EXPORT_SYMBOL(acpi_register_ioapic);
695
696 int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base)
697 {
698 /* TBD */
699 return -EINVAL;
700 }
701
702 EXPORT_SYMBOL(acpi_unregister_ioapic);
703
704 static int __init acpi_parse_sbf(struct acpi_table_header *table)
705 {
706 struct acpi_table_boot *sb;
707
708 sb = (struct acpi_table_boot *)table;
709 if (!sb) {
710 printk(KERN_WARNING PREFIX "Unable to map SBF\n");
711 return -ENODEV;
712 }
713
714 sbf_port = sb->cmos_index; /* Save CMOS port */
715
716 return 0;
717 }
718
719 #ifdef CONFIG_HPET_TIMER
720 #include <asm/hpet.h>
721
722 static struct __initdata resource *hpet_res;
723
724 static int __init acpi_parse_hpet(struct acpi_table_header *table)
725 {
726 struct acpi_table_hpet *hpet_tbl;
727
728 hpet_tbl = (struct acpi_table_hpet *)table;
729 if (!hpet_tbl) {
730 printk(KERN_WARNING PREFIX "Unable to map HPET\n");
731 return -ENODEV;
732 }
733
734 if (hpet_tbl->address.space_id != ACPI_SPACE_MEM) {
735 printk(KERN_WARNING PREFIX "HPET timers must be located in "
736 "memory.\n");
737 return -1;
738 }
739
740 hpet_address = hpet_tbl->address.address;
741 hpet_blockid = hpet_tbl->sequence;
742
743 /*
744 * Some broken BIOSes advertise HPET at 0x0. We really do not
745 * want to allocate a resource there.
746 */
747 if (!hpet_address) {
748 printk(KERN_WARNING PREFIX
749 "HPET id: %#x base: %#lx is invalid\n",
750 hpet_tbl->id, hpet_address);
751 return 0;
752 }
753 #ifdef CONFIG_X86_64
754 /*
755 * Some even more broken BIOSes advertise HPET at
756 * 0xfed0000000000000 instead of 0xfed00000. Fix it up and add
757 * some noise:
758 */
759 if (hpet_address == 0xfed0000000000000UL) {
760 if (!hpet_force_user) {
761 printk(KERN_WARNING PREFIX "HPET id: %#x "
762 "base: 0xfed0000000000000 is bogus\n "
763 "try hpet=force on the kernel command line to "
764 "fix it up to 0xfed00000.\n", hpet_tbl->id);
765 hpet_address = 0;
766 return 0;
767 }
768 printk(KERN_WARNING PREFIX
769 "HPET id: %#x base: 0xfed0000000000000 fixed up "
770 "to 0xfed00000.\n", hpet_tbl->id);
771 hpet_address >>= 32;
772 }
773 #endif
774 printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n",
775 hpet_tbl->id, hpet_address);
776
777 /*
778 * Allocate and initialize the HPET firmware resource for adding into
779 * the resource tree during the lateinit timeframe.
780 */
781 #define HPET_RESOURCE_NAME_SIZE 9
782 hpet_res = alloc_bootmem(sizeof(*hpet_res) + HPET_RESOURCE_NAME_SIZE);
783
784 hpet_res->name = (void *)&hpet_res[1];
785 hpet_res->flags = IORESOURCE_MEM;
786 snprintf((char *)hpet_res->name, HPET_RESOURCE_NAME_SIZE, "HPET %u",
787 hpet_tbl->sequence);
788
789 hpet_res->start = hpet_address;
790 hpet_res->end = hpet_address + (1 * 1024) - 1;
791
792 return 0;
793 }
794
795 /*
796 * hpet_insert_resource inserts the HPET resources used into the resource
797 * tree.
798 */
799 static __init int hpet_insert_resource(void)
800 {
801 if (!hpet_res)
802 return 1;
803
804 return insert_resource(&iomem_resource, hpet_res);
805 }
806
807 late_initcall(hpet_insert_resource);
808
809 #else
810 #define acpi_parse_hpet NULL
811 #endif
812
813 static int __init acpi_parse_fadt(struct acpi_table_header *table)
814 {
815
816 #ifdef CONFIG_X86_PM_TIMER
817 /* detect the location of the ACPI PM Timer */
818 if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID) {
819 /* FADT rev. 2 */
820 if (acpi_gbl_FADT.xpm_timer_block.space_id !=
821 ACPI_ADR_SPACE_SYSTEM_IO)
822 return 0;
823
824 pmtmr_ioport = acpi_gbl_FADT.xpm_timer_block.address;
825 /*
826 * "X" fields are optional extensions to the original V1.0
827 * fields, so we must selectively expand V1.0 fields if the
828 * corresponding X field is zero.
829 */
830 if (!pmtmr_ioport)
831 pmtmr_ioport = acpi_gbl_FADT.pm_timer_block;
832 } else {
833 /* FADT rev. 1 */
834 pmtmr_ioport = acpi_gbl_FADT.pm_timer_block;
835 }
836 if (pmtmr_ioport)
837 printk(KERN_INFO PREFIX "PM-Timer IO Port: %#x\n",
838 pmtmr_ioport);
839 #endif
840 return 0;
841 }
842
843 #ifdef CONFIG_X86_LOCAL_APIC
844 /*
845 * Parse LAPIC entries in MADT
846 * returns 0 on success, < 0 on error
847 */
848
849 static void __init acpi_register_lapic_address(unsigned long address)
850 {
851 mp_lapic_addr = address;
852
853 set_fixmap_nocache(FIX_APIC_BASE, address);
854 if (boot_cpu_physical_apicid == -1U) {
855 boot_cpu_physical_apicid = read_apic_id();
856 apic_version[boot_cpu_physical_apicid] =
857 GET_APIC_VERSION(apic_read(APIC_LVR));
858 }
859 }
860
861 static int __init early_acpi_parse_madt_lapic_addr_ovr(void)
862 {
863 int count;
864
865 if (!cpu_has_apic)
866 return -ENODEV;
867
868 /*
869 * Note that the LAPIC address is obtained from the MADT (32-bit value)
870 * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value).
871 */
872
873 count =
874 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE,
875 acpi_parse_lapic_addr_ovr, 0);
876 if (count < 0) {
877 printk(KERN_ERR PREFIX
878 "Error parsing LAPIC address override entry\n");
879 return count;
880 }
881
882 acpi_register_lapic_address(acpi_lapic_addr);
883
884 return count;
885 }
886
887 static int __init acpi_parse_madt_lapic_entries(void)
888 {
889 int count;
890 int x2count = 0;
891
892 if (!cpu_has_apic)
893 return -ENODEV;
894
895 /*
896 * Note that the LAPIC address is obtained from the MADT (32-bit value)
897 * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value).
898 */
899
900 count =
901 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE,
902 acpi_parse_lapic_addr_ovr, 0);
903 if (count < 0) {
904 printk(KERN_ERR PREFIX
905 "Error parsing LAPIC address override entry\n");
906 return count;
907 }
908
909 acpi_register_lapic_address(acpi_lapic_addr);
910
911 count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_SAPIC,
912 acpi_parse_sapic, MAX_APICS);
913
914 if (!count) {
915 x2count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC,
916 acpi_parse_x2apic, MAX_APICS);
917 count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC,
918 acpi_parse_lapic, MAX_APICS);
919 }
920 if (!count && !x2count) {
921 printk(KERN_ERR PREFIX "No LAPIC entries present\n");
922 /* TBD: Cleanup to allow fallback to MPS */
923 return -ENODEV;
924 } else if (count < 0 || x2count < 0) {
925 printk(KERN_ERR PREFIX "Error parsing LAPIC entry\n");
926 /* TBD: Cleanup to allow fallback to MPS */
927 return count;
928 }
929
930 x2count =
931 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC_NMI,
932 acpi_parse_x2apic_nmi, 0);
933 count =
934 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI, acpi_parse_lapic_nmi, 0);
935 if (count < 0 || x2count < 0) {
936 printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n");
937 /* TBD: Cleanup to allow fallback to MPS */
938 return count;
939 }
940 return 0;
941 }
942 #endif /* CONFIG_X86_LOCAL_APIC */
943
944 #ifdef CONFIG_X86_IO_APIC
945 #define MP_ISA_BUS 0
946
947 #ifdef CONFIG_X86_ES7000
948 extern int es7000_plat;
949 #endif
950
951 static void assign_to_mp_irq(struct mpc_intsrc *m,
952 struct mpc_intsrc *mp_irq)
953 {
954 memcpy(mp_irq, m, sizeof(struct mpc_intsrc));
955 }
956
957 static int mp_irq_cmp(struct mpc_intsrc *mp_irq,
958 struct mpc_intsrc *m)
959 {
960 return memcmp(mp_irq, m, sizeof(struct mpc_intsrc));
961 }
962
963 static void save_mp_irq(struct mpc_intsrc *m)
964 {
965 int i;
966
967 for (i = 0; i < mp_irq_entries; i++) {
968 if (!mp_irq_cmp(&mp_irqs[i], m))
969 return;
970 }
971
972 assign_to_mp_irq(m, &mp_irqs[mp_irq_entries]);
973 if (++mp_irq_entries == MAX_IRQ_SOURCES)
974 panic("Max # of irq sources exceeded!!\n");
975 }
976
977 void __init mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger, u32 gsi)
978 {
979 int ioapic;
980 int pin;
981 struct mpc_intsrc mp_irq;
982
983 /*
984 * Convert 'gsi' to 'ioapic.pin'.
985 */
986 ioapic = mp_find_ioapic(gsi);
987 if (ioapic < 0)
988 return;
989 pin = mp_find_ioapic_pin(ioapic, gsi);
990
991 /*
992 * TBD: This check is for faulty timer entries, where the override
993 * erroneously sets the trigger to level, resulting in a HUGE
994 * increase of timer interrupts!
995 */
996 if ((bus_irq == 0) && (trigger == 3))
997 trigger = 1;
998
999 mp_irq.type = MP_INTSRC;
1000 mp_irq.irqtype = mp_INT;
1001 mp_irq.irqflag = (trigger << 2) | polarity;
1002 mp_irq.srcbus = MP_ISA_BUS;
1003 mp_irq.srcbusirq = bus_irq; /* IRQ */
1004 mp_irq.dstapic = mp_ioapics[ioapic].apicid; /* APIC ID */
1005 mp_irq.dstirq = pin; /* INTIN# */
1006
1007 save_mp_irq(&mp_irq);
1008
1009 isa_irq_to_gsi[bus_irq] = gsi;
1010 }
1011
1012 void __init mp_config_acpi_legacy_irqs(void)
1013 {
1014 int i;
1015 struct mpc_intsrc mp_irq;
1016
1017 #if defined (CONFIG_MCA) || defined (CONFIG_EISA)
1018 /*
1019 * Fabricate the legacy ISA bus (bus #31).
1020 */
1021 mp_bus_id_to_type[MP_ISA_BUS] = MP_BUS_ISA;
1022 #endif
1023 set_bit(MP_ISA_BUS, mp_bus_not_pci);
1024 pr_debug("Bus #%d is ISA\n", MP_ISA_BUS);
1025
1026 #ifdef CONFIG_X86_ES7000
1027 /*
1028 * Older generations of ES7000 have no legacy identity mappings
1029 */
1030 if (es7000_plat == 1)
1031 return;
1032 #endif
1033
1034 /*
1035 * Use the default configuration for the IRQs 0-15. Unless
1036 * overridden by (MADT) interrupt source override entries.
1037 */
1038 for (i = 0; i < 16; i++) {
1039 int ioapic, pin;
1040 unsigned int dstapic;
1041 int idx;
1042 u32 gsi;
1043
1044 /* Locate the gsi that irq i maps to. */
1045 if (acpi_isa_irq_to_gsi(i, &gsi))
1046 continue;
1047
1048 /*
1049 * Locate the IOAPIC that manages the ISA IRQ.
1050 */
1051 ioapic = mp_find_ioapic(gsi);
1052 if (ioapic < 0)
1053 continue;
1054 pin = mp_find_ioapic_pin(ioapic, gsi);
1055 dstapic = mp_ioapics[ioapic].apicid;
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 == pin)
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 = pin;
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 if (ioapic_pin > MP_MAX_IOAPIC_PIN) {
1146 printk(KERN_ERR "Invalid reference to IOAPIC pin "
1147 "%d-%d\n", mp_ioapics[ioapic].apicid,
1148 ioapic_pin);
1149 return gsi;
1150 }
1151
1152 if (enable_update_mptable)
1153 mp_config_acpi_gsi(dev, gsi, trigger, polarity);
1154
1155 set_io_apic_irq_attr(&irq_attr, ioapic, ioapic_pin,
1156 trigger == ACPI_EDGE_SENSITIVE ? 0 : 1,
1157 polarity == ACPI_ACTIVE_HIGH ? 0 : 1);
1158 io_apic_set_pci_routing(dev, gsi_to_irq(gsi), &irq_attr);
1159
1160 return gsi;
1161 }
1162
1163 /*
1164 * Parse IOAPIC related entries in MADT
1165 * returns 0 on success, < 0 on error
1166 */
1167 static int __init acpi_parse_madt_ioapic_entries(void)
1168 {
1169 int count;
1170
1171 /*
1172 * ACPI interpreter is required to complete interrupt setup,
1173 * so if it is off, don't enumerate the io-apics with ACPI.
1174 * If MPS is present, it will handle them,
1175 * otherwise the system will stay in PIC mode
1176 */
1177 if (acpi_disabled || acpi_noirq)
1178 return -ENODEV;
1179
1180 if (!cpu_has_apic)
1181 return -ENODEV;
1182
1183 /*
1184 * if "noapic" boot option, don't look for IO-APICs
1185 */
1186 if (skip_ioapic_setup) {
1187 printk(KERN_INFO PREFIX "Skipping IOAPIC probe "
1188 "due to 'noapic' option.\n");
1189 return -ENODEV;
1190 }
1191
1192 count =
1193 acpi_table_parse_madt(ACPI_MADT_TYPE_IO_APIC, acpi_parse_ioapic,
1194 MAX_IO_APICS);
1195 if (!count) {
1196 printk(KERN_ERR PREFIX "No IOAPIC entries present\n");
1197 return -ENODEV;
1198 } else if (count < 0) {
1199 printk(KERN_ERR PREFIX "Error parsing IOAPIC entry\n");
1200 return count;
1201 }
1202
1203 count =
1204 acpi_table_parse_madt(ACPI_MADT_TYPE_INTERRUPT_OVERRIDE, acpi_parse_int_src_ovr,
1205 nr_irqs);
1206 if (count < 0) {
1207 printk(KERN_ERR PREFIX
1208 "Error parsing interrupt source overrides entry\n");
1209 /* TBD: Cleanup to allow fallback to MPS */
1210 return count;
1211 }
1212
1213 /*
1214 * If BIOS did not supply an INT_SRC_OVR for the SCI
1215 * pretend we got one so we can set the SCI flags.
1216 */
1217 if (!acpi_sci_override_gsi)
1218 acpi_sci_ioapic_setup(acpi_gbl_FADT.sci_interrupt, 0, 0,
1219 acpi_gbl_FADT.sci_interrupt);
1220
1221 /* Fill in identity legacy mappings where no override */
1222 mp_config_acpi_legacy_irqs();
1223
1224 count =
1225 acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE, acpi_parse_nmi_src,
1226 nr_irqs);
1227 if (count < 0) {
1228 printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n");
1229 /* TBD: Cleanup to allow fallback to MPS */
1230 return count;
1231 }
1232
1233 return 0;
1234 }
1235 #else
1236 static inline int acpi_parse_madt_ioapic_entries(void)
1237 {
1238 return -1;
1239 }
1240 #endif /* !CONFIG_X86_IO_APIC */
1241
1242 static void __init early_acpi_process_madt(void)
1243 {
1244 #ifdef CONFIG_X86_LOCAL_APIC
1245 int error;
1246
1247 if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) {
1248
1249 /*
1250 * Parse MADT LAPIC entries
1251 */
1252 error = early_acpi_parse_madt_lapic_addr_ovr();
1253 if (!error) {
1254 acpi_lapic = 1;
1255 smp_found_config = 1;
1256 }
1257 if (error == -EINVAL) {
1258 /*
1259 * Dell Precision Workstation 410, 610 come here.
1260 */
1261 printk(KERN_ERR PREFIX
1262 "Invalid BIOS MADT, disabling ACPI\n");
1263 disable_acpi();
1264 }
1265 }
1266 #endif
1267 }
1268
1269 static void __init acpi_process_madt(void)
1270 {
1271 #ifdef CONFIG_X86_LOCAL_APIC
1272 int error;
1273
1274 if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) {
1275
1276 /*
1277 * Parse MADT LAPIC entries
1278 */
1279 error = acpi_parse_madt_lapic_entries();
1280 if (!error) {
1281 acpi_lapic = 1;
1282
1283 /*
1284 * Parse MADT IO-APIC entries
1285 */
1286 error = acpi_parse_madt_ioapic_entries();
1287 if (!error) {
1288 acpi_set_irq_model_ioapic();
1289
1290 smp_found_config = 1;
1291 }
1292 }
1293 if (error == -EINVAL) {
1294 /*
1295 * Dell Precision Workstation 410, 610 come here.
1296 */
1297 printk(KERN_ERR PREFIX
1298 "Invalid BIOS MADT, disabling ACPI\n");
1299 disable_acpi();
1300 }
1301 } else {
1302 /*
1303 * ACPI found no MADT, and so ACPI wants UP PIC mode.
1304 * In the event an MPS table was found, forget it.
1305 * Boot with "acpi=off" to use MPS on such a system.
1306 */
1307 if (smp_found_config) {
1308 printk(KERN_WARNING PREFIX
1309 "No APIC-table, disabling MPS\n");
1310 smp_found_config = 0;
1311 }
1312 }
1313
1314 /*
1315 * ACPI supports both logical (e.g. Hyper-Threading) and physical
1316 * processors, where MPS only supports physical.
1317 */
1318 if (acpi_lapic && acpi_ioapic)
1319 printk(KERN_INFO "Using ACPI (MADT) for SMP configuration "
1320 "information\n");
1321 else if (acpi_lapic)
1322 printk(KERN_INFO "Using ACPI for processor (LAPIC) "
1323 "configuration information\n");
1324 #endif
1325 return;
1326 }
1327
1328 static int __init disable_acpi_irq(const struct dmi_system_id *d)
1329 {
1330 if (!acpi_force) {
1331 printk(KERN_NOTICE "%s detected: force use of acpi=noirq\n",
1332 d->ident);
1333 acpi_noirq_set();
1334 }
1335 return 0;
1336 }
1337
1338 static int __init disable_acpi_pci(const struct dmi_system_id *d)
1339 {
1340 if (!acpi_force) {
1341 printk(KERN_NOTICE "%s detected: force use of pci=noacpi\n",
1342 d->ident);
1343 acpi_disable_pci();
1344 }
1345 return 0;
1346 }
1347
1348 static int __init dmi_disable_acpi(const struct dmi_system_id *d)
1349 {
1350 if (!acpi_force) {
1351 printk(KERN_NOTICE "%s detected: acpi off\n", d->ident);
1352 disable_acpi();
1353 } else {
1354 printk(KERN_NOTICE
1355 "Warning: DMI blacklist says broken, but acpi forced\n");
1356 }
1357 return 0;
1358 }
1359
1360 /*
1361 * Force ignoring BIOS IRQ0 pin2 override
1362 */
1363 static int __init dmi_ignore_irq0_timer_override(const struct dmi_system_id *d)
1364 {
1365 /*
1366 * The ati_ixp4x0_rev() early PCI quirk should have set
1367 * the acpi_skip_timer_override flag already:
1368 */
1369 if (!acpi_skip_timer_override) {
1370 WARN(1, KERN_ERR "ati_ixp4x0 quirk not complete.\n");
1371 pr_notice("%s detected: Ignoring BIOS IRQ0 pin2 override\n",
1372 d->ident);
1373 acpi_skip_timer_override = 1;
1374 }
1375 return 0;
1376 }
1377
1378 /*
1379 * If your system is blacklisted here, but you find that acpi=force
1380 * works for you, please contact linux-acpi@vger.kernel.org
1381 */
1382 static struct dmi_system_id __initdata acpi_dmi_table[] = {
1383 /*
1384 * Boxes that need ACPI disabled
1385 */
1386 {
1387 .callback = dmi_disable_acpi,
1388 .ident = "IBM Thinkpad",
1389 .matches = {
1390 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1391 DMI_MATCH(DMI_BOARD_NAME, "2629H1G"),
1392 },
1393 },
1394
1395 /*
1396 * Boxes that need ACPI PCI IRQ routing disabled
1397 */
1398 {
1399 .callback = disable_acpi_irq,
1400 .ident = "ASUS A7V",
1401 .matches = {
1402 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC"),
1403 DMI_MATCH(DMI_BOARD_NAME, "<A7V>"),
1404 /* newer BIOS, Revision 1011, does work */
1405 DMI_MATCH(DMI_BIOS_VERSION,
1406 "ASUS A7V ACPI BIOS Revision 1007"),
1407 },
1408 },
1409 {
1410 /*
1411 * Latest BIOS for IBM 600E (1.16) has bad pcinum
1412 * for LPC bridge, which is needed for the PCI
1413 * interrupt links to work. DSDT fix is in bug 5966.
1414 * 2645, 2646 model numbers are shared with 600/600E/600X
1415 */
1416 .callback = disable_acpi_irq,
1417 .ident = "IBM Thinkpad 600 Series 2645",
1418 .matches = {
1419 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1420 DMI_MATCH(DMI_BOARD_NAME, "2645"),
1421 },
1422 },
1423 {
1424 .callback = disable_acpi_irq,
1425 .ident = "IBM Thinkpad 600 Series 2646",
1426 .matches = {
1427 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1428 DMI_MATCH(DMI_BOARD_NAME, "2646"),
1429 },
1430 },
1431 /*
1432 * Boxes that need ACPI PCI IRQ routing and PCI scan disabled
1433 */
1434 { /* _BBN 0 bug */
1435 .callback = disable_acpi_pci,
1436 .ident = "ASUS PR-DLS",
1437 .matches = {
1438 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
1439 DMI_MATCH(DMI_BOARD_NAME, "PR-DLS"),
1440 DMI_MATCH(DMI_BIOS_VERSION,
1441 "ASUS PR-DLS ACPI BIOS Revision 1010"),
1442 DMI_MATCH(DMI_BIOS_DATE, "03/21/2003")
1443 },
1444 },
1445 {
1446 .callback = disable_acpi_pci,
1447 .ident = "Acer TravelMate 36x Laptop",
1448 .matches = {
1449 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
1450 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 360"),
1451 },
1452 },
1453 {}
1454 };
1455
1456 /* second table for DMI checks that should run after early-quirks */
1457 static struct dmi_system_id __initdata acpi_dmi_table_late[] = {
1458 /*
1459 * HP laptops which use a DSDT reporting as HP/SB400/10000,
1460 * which includes some code which overrides all temperature
1461 * trip points to 16C if the INTIN2 input of the I/O APIC
1462 * is enabled. This input is incorrectly designated the
1463 * ISA IRQ 0 via an interrupt source override even though
1464 * it is wired to the output of the master 8259A and INTIN0
1465 * is not connected at all. Force ignoring BIOS IRQ0 pin2
1466 * override in that cases.
1467 */
1468 {
1469 .callback = dmi_ignore_irq0_timer_override,
1470 .ident = "HP nx6115 laptop",
1471 .matches = {
1472 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1473 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6115"),
1474 },
1475 },
1476 {
1477 .callback = dmi_ignore_irq0_timer_override,
1478 .ident = "HP NX6125 laptop",
1479 .matches = {
1480 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1481 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6125"),
1482 },
1483 },
1484 {
1485 .callback = dmi_ignore_irq0_timer_override,
1486 .ident = "HP NX6325 laptop",
1487 .matches = {
1488 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1489 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6325"),
1490 },
1491 },
1492 {
1493 .callback = dmi_ignore_irq0_timer_override,
1494 .ident = "HP 6715b laptop",
1495 .matches = {
1496 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1497 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq 6715b"),
1498 },
1499 },
1500 {}
1501 };
1502
1503 /*
1504 * acpi_boot_table_init() and acpi_boot_init()
1505 * called from setup_arch(), always.
1506 * 1. checksums all tables
1507 * 2. enumerates lapics
1508 * 3. enumerates io-apics
1509 *
1510 * acpi_table_init() is separate to allow reading SRAT without
1511 * other side effects.
1512 *
1513 * side effects of acpi_boot_init:
1514 * acpi_lapic = 1 if LAPIC found
1515 * acpi_ioapic = 1 if IOAPIC found
1516 * if (acpi_lapic && acpi_ioapic) smp_found_config = 1;
1517 * if acpi_blacklisted() acpi_disabled = 1;
1518 * acpi_irq_model=...
1519 * ...
1520 */
1521
1522 void __init acpi_boot_table_init(void)
1523 {
1524 dmi_check_system(acpi_dmi_table);
1525
1526 /*
1527 * If acpi_disabled, bail out
1528 */
1529 if (acpi_disabled)
1530 return;
1531
1532 /*
1533 * Initialize the ACPI boot-time table parser.
1534 */
1535 if (acpi_table_init()) {
1536 disable_acpi();
1537 return;
1538 }
1539
1540 acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf);
1541
1542 /*
1543 * blacklist may disable ACPI entirely
1544 */
1545 if (acpi_blacklisted()) {
1546 if (acpi_force) {
1547 printk(KERN_WARNING PREFIX "acpi=force override\n");
1548 } else {
1549 printk(KERN_WARNING PREFIX "Disabling ACPI support\n");
1550 disable_acpi();
1551 return;
1552 }
1553 }
1554 }
1555
1556 int __init early_acpi_boot_init(void)
1557 {
1558 /*
1559 * If acpi_disabled, bail out
1560 */
1561 if (acpi_disabled)
1562 return 1;
1563
1564 /*
1565 * Process the Multiple APIC Description Table (MADT), if present
1566 */
1567 early_acpi_process_madt();
1568
1569 return 0;
1570 }
1571
1572 int __init acpi_boot_init(void)
1573 {
1574 /* those are executed after early-quirks are executed */
1575 dmi_check_system(acpi_dmi_table_late);
1576
1577 /*
1578 * If acpi_disabled, bail out
1579 */
1580 if (acpi_disabled)
1581 return 1;
1582
1583 acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf);
1584
1585 /*
1586 * set sci_int and PM timer address
1587 */
1588 acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt);
1589
1590 /*
1591 * Process the Multiple APIC Description Table (MADT), if present
1592 */
1593 acpi_process_madt();
1594
1595 acpi_table_parse(ACPI_SIG_HPET, acpi_parse_hpet);
1596
1597 if (!acpi_noirq)
1598 x86_init.pci.init = pci_acpi_init;
1599
1600 return 0;
1601 }
1602
1603 static int __init parse_acpi(char *arg)
1604 {
1605 if (!arg)
1606 return -EINVAL;
1607
1608 /* "acpi=off" disables both ACPI table parsing and interpreter */
1609 if (strcmp(arg, "off") == 0) {
1610 disable_acpi();
1611 }
1612 /* acpi=force to over-ride black-list */
1613 else if (strcmp(arg, "force") == 0) {
1614 acpi_force = 1;
1615 acpi_disabled = 0;
1616 }
1617 /* acpi=strict disables out-of-spec workarounds */
1618 else if (strcmp(arg, "strict") == 0) {
1619 acpi_strict = 1;
1620 }
1621 /* acpi=rsdt use RSDT instead of XSDT */
1622 else if (strcmp(arg, "rsdt") == 0) {
1623 acpi_rsdt_forced = 1;
1624 }
1625 /* "acpi=noirq" disables ACPI interrupt routing */
1626 else if (strcmp(arg, "noirq") == 0) {
1627 acpi_noirq_set();
1628 }
1629 /* "acpi=copy_dsdt" copys DSDT */
1630 else if (strcmp(arg, "copy_dsdt") == 0) {
1631 acpi_gbl_copy_dsdt_locally = 1;
1632 } else {
1633 /* Core will printk when we return error. */
1634 return -EINVAL;
1635 }
1636 return 0;
1637 }
1638 early_param("acpi", parse_acpi);
1639
1640 /* FIXME: Using pci= for an ACPI parameter is a travesty. */
1641 static int __init parse_pci(char *arg)
1642 {
1643 if (arg && strcmp(arg, "noacpi") == 0)
1644 acpi_disable_pci();
1645 return 0;
1646 }
1647 early_param("pci", parse_pci);
1648
1649 int __init acpi_mps_check(void)
1650 {
1651 #if defined(CONFIG_X86_LOCAL_APIC) && !defined(CONFIG_X86_MPPARSE)
1652 /* mptable code is not built-in*/
1653 if (acpi_disabled || acpi_noirq) {
1654 printk(KERN_WARNING "MPS support code is not built-in.\n"
1655 "Using acpi=off or acpi=noirq or pci=noacpi "
1656 "may have problem\n");
1657 return 1;
1658 }
1659 #endif
1660 return 0;
1661 }
1662
1663 #ifdef CONFIG_X86_IO_APIC
1664 static int __init parse_acpi_skip_timer_override(char *arg)
1665 {
1666 acpi_skip_timer_override = 1;
1667 return 0;
1668 }
1669 early_param("acpi_skip_timer_override", parse_acpi_skip_timer_override);
1670
1671 static int __init parse_acpi_use_timer_override(char *arg)
1672 {
1673 acpi_use_timer_override = 1;
1674 return 0;
1675 }
1676 early_param("acpi_use_timer_override", parse_acpi_use_timer_override);
1677 #endif /* CONFIG_X86_IO_APIC */
1678
1679 static int __init setup_acpi_sci(char *s)
1680 {
1681 if (!s)
1682 return -EINVAL;
1683 if (!strcmp(s, "edge"))
1684 acpi_sci_flags = ACPI_MADT_TRIGGER_EDGE |
1685 (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK);
1686 else if (!strcmp(s, "level"))
1687 acpi_sci_flags = ACPI_MADT_TRIGGER_LEVEL |
1688 (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK);
1689 else if (!strcmp(s, "high"))
1690 acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_HIGH |
1691 (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK);
1692 else if (!strcmp(s, "low"))
1693 acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_LOW |
1694 (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK);
1695 else
1696 return -EINVAL;
1697 return 0;
1698 }
1699 early_param("acpi_sci", setup_acpi_sci);
1700
1701 int __acpi_acquire_global_lock(unsigned int *lock)
1702 {
1703 unsigned int old, new, val;
1704 do {
1705 old = *lock;
1706 new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1));
1707 val = cmpxchg(lock, old, new);
1708 } while (unlikely (val != old));
1709 return (new < 3) ? -1 : 0;
1710 }
1711
1712 int __acpi_release_global_lock(unsigned int *lock)
1713 {
1714 unsigned int old, new, val;
1715 do {
1716 old = *lock;
1717 new = old & ~0x3;
1718 val = cmpxchg(lock, old, new);
1719 } while (unlikely (val != old));
1720 return old & 0x1;
1721 }
kernel source for telekom puls (alcatel/mediatek)