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xen: add xen hvm acpi_register_gsi variant
[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 int (*__acpi_register_gsi)(struct device *dev, u32 gsi,
541 int trigger, int polarity) = acpi_register_gsi_pic;
542
543 /*
544 * success: return IRQ number (>=0)
545 * failure: return < 0
546 */
547 int acpi_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity)
548 {
549 unsigned int irq;
550 unsigned int plat_gsi = gsi;
551
552 plat_gsi = (*__acpi_register_gsi)(dev, gsi, trigger, polarity);
553 irq = gsi_to_irq(plat_gsi);
554
555 return irq;
556 }
557
558 void __init acpi_set_irq_model_pic(void)
559 {
560 acpi_irq_model = ACPI_IRQ_MODEL_PIC;
561 __acpi_register_gsi = acpi_register_gsi_pic;
562 acpi_ioapic = 0;
563 }
564
565 void __init acpi_set_irq_model_ioapic(void)
566 {
567 acpi_irq_model = ACPI_IRQ_MODEL_IOAPIC;
568 __acpi_register_gsi = acpi_register_gsi_ioapic;
569 acpi_ioapic = 1;
570 }
571
572 /*
573 * ACPI based hotplug support for CPU
574 */
575 #ifdef CONFIG_ACPI_HOTPLUG_CPU
576 #include <acpi/processor.h>
577
578 static void acpi_map_cpu2node(acpi_handle handle, int cpu, int physid)
579 {
580 #ifdef CONFIG_ACPI_NUMA
581 int nid;
582
583 nid = acpi_get_node(handle);
584 if (nid == -1 || !node_online(nid))
585 return;
586 #ifdef CONFIG_X86_64
587 apicid_to_node[physid] = nid;
588 numa_set_node(cpu, nid);
589 #else /* CONFIG_X86_32 */
590 apicid_2_node[physid] = nid;
591 cpu_to_node_map[cpu] = nid;
592 #endif
593
594 #endif
595 }
596
597 static int __cpuinit _acpi_map_lsapic(acpi_handle handle, int *pcpu)
598 {
599 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
600 union acpi_object *obj;
601 struct acpi_madt_local_apic *lapic;
602 cpumask_var_t tmp_map, new_map;
603 u8 physid;
604 int cpu;
605 int retval = -ENOMEM;
606
607 if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer)))
608 return -EINVAL;
609
610 if (!buffer.length || !buffer.pointer)
611 return -EINVAL;
612
613 obj = buffer.pointer;
614 if (obj->type != ACPI_TYPE_BUFFER ||
615 obj->buffer.length < sizeof(*lapic)) {
616 kfree(buffer.pointer);
617 return -EINVAL;
618 }
619
620 lapic = (struct acpi_madt_local_apic *)obj->buffer.pointer;
621
622 if (lapic->header.type != ACPI_MADT_TYPE_LOCAL_APIC ||
623 !(lapic->lapic_flags & ACPI_MADT_ENABLED)) {
624 kfree(buffer.pointer);
625 return -EINVAL;
626 }
627
628 physid = lapic->id;
629
630 kfree(buffer.pointer);
631 buffer.length = ACPI_ALLOCATE_BUFFER;
632 buffer.pointer = NULL;
633
634 if (!alloc_cpumask_var(&tmp_map, GFP_KERNEL))
635 goto out;
636
637 if (!alloc_cpumask_var(&new_map, GFP_KERNEL))
638 goto free_tmp_map;
639
640 cpumask_copy(tmp_map, cpu_present_mask);
641 acpi_register_lapic(physid, lapic->lapic_flags & ACPI_MADT_ENABLED);
642
643 /*
644 * If mp_register_lapic successfully generates a new logical cpu
645 * number, then the following will get us exactly what was mapped
646 */
647 cpumask_andnot(new_map, cpu_present_mask, tmp_map);
648 if (cpumask_empty(new_map)) {
649 printk ("Unable to map lapic to logical cpu number\n");
650 retval = -EINVAL;
651 goto free_new_map;
652 }
653
654 acpi_processor_set_pdc(handle);
655
656 cpu = cpumask_first(new_map);
657 acpi_map_cpu2node(handle, cpu, physid);
658
659 *pcpu = cpu;
660 retval = 0;
661
662 free_new_map:
663 free_cpumask_var(new_map);
664 free_tmp_map:
665 free_cpumask_var(tmp_map);
666 out:
667 return retval;
668 }
669
670 /* wrapper to silence section mismatch warning */
671 int __ref acpi_map_lsapic(acpi_handle handle, int *pcpu)
672 {
673 return _acpi_map_lsapic(handle, pcpu);
674 }
675 EXPORT_SYMBOL(acpi_map_lsapic);
676
677 int acpi_unmap_lsapic(int cpu)
678 {
679 per_cpu(x86_cpu_to_apicid, cpu) = -1;
680 set_cpu_present(cpu, false);
681 num_processors--;
682
683 return (0);
684 }
685
686 EXPORT_SYMBOL(acpi_unmap_lsapic);
687 #endif /* CONFIG_ACPI_HOTPLUG_CPU */
688
689 int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base)
690 {
691 /* TBD */
692 return -EINVAL;
693 }
694
695 EXPORT_SYMBOL(acpi_register_ioapic);
696
697 int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base)
698 {
699 /* TBD */
700 return -EINVAL;
701 }
702
703 EXPORT_SYMBOL(acpi_unregister_ioapic);
704
705 static int __init acpi_parse_sbf(struct acpi_table_header *table)
706 {
707 struct acpi_table_boot *sb;
708
709 sb = (struct acpi_table_boot *)table;
710 if (!sb) {
711 printk(KERN_WARNING PREFIX "Unable to map SBF\n");
712 return -ENODEV;
713 }
714
715 sbf_port = sb->cmos_index; /* Save CMOS port */
716
717 return 0;
718 }
719
720 #ifdef CONFIG_HPET_TIMER
721 #include <asm/hpet.h>
722
723 static struct __initdata resource *hpet_res;
724
725 static int __init acpi_parse_hpet(struct acpi_table_header *table)
726 {
727 struct acpi_table_hpet *hpet_tbl;
728
729 hpet_tbl = (struct acpi_table_hpet *)table;
730 if (!hpet_tbl) {
731 printk(KERN_WARNING PREFIX "Unable to map HPET\n");
732 return -ENODEV;
733 }
734
735 if (hpet_tbl->address.space_id != ACPI_SPACE_MEM) {
736 printk(KERN_WARNING PREFIX "HPET timers must be located in "
737 "memory.\n");
738 return -1;
739 }
740
741 hpet_address = hpet_tbl->address.address;
742 hpet_blockid = hpet_tbl->sequence;
743
744 /*
745 * Some broken BIOSes advertise HPET at 0x0. We really do not
746 * want to allocate a resource there.
747 */
748 if (!hpet_address) {
749 printk(KERN_WARNING PREFIX
750 "HPET id: %#x base: %#lx is invalid\n",
751 hpet_tbl->id, hpet_address);
752 return 0;
753 }
754 #ifdef CONFIG_X86_64
755 /*
756 * Some even more broken BIOSes advertise HPET at
757 * 0xfed0000000000000 instead of 0xfed00000. Fix it up and add
758 * some noise:
759 */
760 if (hpet_address == 0xfed0000000000000UL) {
761 if (!hpet_force_user) {
762 printk(KERN_WARNING PREFIX "HPET id: %#x "
763 "base: 0xfed0000000000000 is bogus\n "
764 "try hpet=force on the kernel command line to "
765 "fix it up to 0xfed00000.\n", hpet_tbl->id);
766 hpet_address = 0;
767 return 0;
768 }
769 printk(KERN_WARNING PREFIX
770 "HPET id: %#x base: 0xfed0000000000000 fixed up "
771 "to 0xfed00000.\n", hpet_tbl->id);
772 hpet_address >>= 32;
773 }
774 #endif
775 printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n",
776 hpet_tbl->id, hpet_address);
777
778 /*
779 * Allocate and initialize the HPET firmware resource for adding into
780 * the resource tree during the lateinit timeframe.
781 */
782 #define HPET_RESOURCE_NAME_SIZE 9
783 hpet_res = alloc_bootmem(sizeof(*hpet_res) + HPET_RESOURCE_NAME_SIZE);
784
785 hpet_res->name = (void *)&hpet_res[1];
786 hpet_res->flags = IORESOURCE_MEM;
787 snprintf((char *)hpet_res->name, HPET_RESOURCE_NAME_SIZE, "HPET %u",
788 hpet_tbl->sequence);
789
790 hpet_res->start = hpet_address;
791 hpet_res->end = hpet_address + (1 * 1024) - 1;
792
793 return 0;
794 }
795
796 /*
797 * hpet_insert_resource inserts the HPET resources used into the resource
798 * tree.
799 */
800 static __init int hpet_insert_resource(void)
801 {
802 if (!hpet_res)
803 return 1;
804
805 return insert_resource(&iomem_resource, hpet_res);
806 }
807
808 late_initcall(hpet_insert_resource);
809
810 #else
811 #define acpi_parse_hpet NULL
812 #endif
813
814 static int __init acpi_parse_fadt(struct acpi_table_header *table)
815 {
816
817 #ifdef CONFIG_X86_PM_TIMER
818 /* detect the location of the ACPI PM Timer */
819 if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID) {
820 /* FADT rev. 2 */
821 if (acpi_gbl_FADT.xpm_timer_block.space_id !=
822 ACPI_ADR_SPACE_SYSTEM_IO)
823 return 0;
824
825 pmtmr_ioport = acpi_gbl_FADT.xpm_timer_block.address;
826 /*
827 * "X" fields are optional extensions to the original V1.0
828 * fields, so we must selectively expand V1.0 fields if the
829 * corresponding X field is zero.
830 */
831 if (!pmtmr_ioport)
832 pmtmr_ioport = acpi_gbl_FADT.pm_timer_block;
833 } else {
834 /* FADT rev. 1 */
835 pmtmr_ioport = acpi_gbl_FADT.pm_timer_block;
836 }
837 if (pmtmr_ioport)
838 printk(KERN_INFO PREFIX "PM-Timer IO Port: %#x\n",
839 pmtmr_ioport);
840 #endif
841 return 0;
842 }
843
844 #ifdef CONFIG_X86_LOCAL_APIC
845 /*
846 * Parse LAPIC entries in MADT
847 * returns 0 on success, < 0 on error
848 */
849
850 static void __init acpi_register_lapic_address(unsigned long address)
851 {
852 mp_lapic_addr = address;
853
854 set_fixmap_nocache(FIX_APIC_BASE, address);
855 if (boot_cpu_physical_apicid == -1U) {
856 boot_cpu_physical_apicid = read_apic_id();
857 apic_version[boot_cpu_physical_apicid] =
858 GET_APIC_VERSION(apic_read(APIC_LVR));
859 }
860 }
861
862 static int __init early_acpi_parse_madt_lapic_addr_ovr(void)
863 {
864 int count;
865
866 if (!cpu_has_apic)
867 return -ENODEV;
868
869 /*
870 * Note that the LAPIC address is obtained from the MADT (32-bit value)
871 * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value).
872 */
873
874 count =
875 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE,
876 acpi_parse_lapic_addr_ovr, 0);
877 if (count < 0) {
878 printk(KERN_ERR PREFIX
879 "Error parsing LAPIC address override entry\n");
880 return count;
881 }
882
883 acpi_register_lapic_address(acpi_lapic_addr);
884
885 return count;
886 }
887
888 static int __init acpi_parse_madt_lapic_entries(void)
889 {
890 int count;
891 int x2count = 0;
892
893 if (!cpu_has_apic)
894 return -ENODEV;
895
896 /*
897 * Note that the LAPIC address is obtained from the MADT (32-bit value)
898 * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value).
899 */
900
901 count =
902 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE,
903 acpi_parse_lapic_addr_ovr, 0);
904 if (count < 0) {
905 printk(KERN_ERR PREFIX
906 "Error parsing LAPIC address override entry\n");
907 return count;
908 }
909
910 acpi_register_lapic_address(acpi_lapic_addr);
911
912 count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_SAPIC,
913 acpi_parse_sapic, MAX_APICS);
914
915 if (!count) {
916 x2count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC,
917 acpi_parse_x2apic, MAX_APICS);
918 count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC,
919 acpi_parse_lapic, MAX_APICS);
920 }
921 if (!count && !x2count) {
922 printk(KERN_ERR PREFIX "No LAPIC entries present\n");
923 /* TBD: Cleanup to allow fallback to MPS */
924 return -ENODEV;
925 } else if (count < 0 || x2count < 0) {
926 printk(KERN_ERR PREFIX "Error parsing LAPIC entry\n");
927 /* TBD: Cleanup to allow fallback to MPS */
928 return count;
929 }
930
931 x2count =
932 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC_NMI,
933 acpi_parse_x2apic_nmi, 0);
934 count =
935 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI, acpi_parse_lapic_nmi, 0);
936 if (count < 0 || x2count < 0) {
937 printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n");
938 /* TBD: Cleanup to allow fallback to MPS */
939 return count;
940 }
941 return 0;
942 }
943 #endif /* CONFIG_X86_LOCAL_APIC */
944
945 #ifdef CONFIG_X86_IO_APIC
946 #define MP_ISA_BUS 0
947
948 #ifdef CONFIG_X86_ES7000
949 extern int es7000_plat;
950 #endif
951
952 static void assign_to_mp_irq(struct mpc_intsrc *m,
953 struct mpc_intsrc *mp_irq)
954 {
955 memcpy(mp_irq, m, sizeof(struct mpc_intsrc));
956 }
957
958 static int mp_irq_cmp(struct mpc_intsrc *mp_irq,
959 struct mpc_intsrc *m)
960 {
961 return memcmp(mp_irq, m, sizeof(struct mpc_intsrc));
962 }
963
964 static void save_mp_irq(struct mpc_intsrc *m)
965 {
966 int i;
967
968 for (i = 0; i < mp_irq_entries; i++) {
969 if (!mp_irq_cmp(&mp_irqs[i], m))
970 return;
971 }
972
973 assign_to_mp_irq(m, &mp_irqs[mp_irq_entries]);
974 if (++mp_irq_entries == MAX_IRQ_SOURCES)
975 panic("Max # of irq sources exceeded!!\n");
976 }
977
978 void __init mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger, u32 gsi)
979 {
980 int ioapic;
981 int pin;
982 struct mpc_intsrc mp_irq;
983
984 /*
985 * Convert 'gsi' to 'ioapic.pin'.
986 */
987 ioapic = mp_find_ioapic(gsi);
988 if (ioapic < 0)
989 return;
990 pin = mp_find_ioapic_pin(ioapic, gsi);
991
992 /*
993 * TBD: This check is for faulty timer entries, where the override
994 * erroneously sets the trigger to level, resulting in a HUGE
995 * increase of timer interrupts!
996 */
997 if ((bus_irq == 0) && (trigger == 3))
998 trigger = 1;
999
1000 mp_irq.type = MP_INTSRC;
1001 mp_irq.irqtype = mp_INT;
1002 mp_irq.irqflag = (trigger << 2) | polarity;
1003 mp_irq.srcbus = MP_ISA_BUS;
1004 mp_irq.srcbusirq = bus_irq; /* IRQ */
1005 mp_irq.dstapic = mp_ioapics[ioapic].apicid; /* APIC ID */
1006 mp_irq.dstirq = pin; /* INTIN# */
1007
1008 save_mp_irq(&mp_irq);
1009
1010 isa_irq_to_gsi[bus_irq] = gsi;
1011 }
1012
1013 void __init mp_config_acpi_legacy_irqs(void)
1014 {
1015 int i;
1016 struct mpc_intsrc mp_irq;
1017
1018 #if defined (CONFIG_MCA) || defined (CONFIG_EISA)
1019 /*
1020 * Fabricate the legacy ISA bus (bus #31).
1021 */
1022 mp_bus_id_to_type[MP_ISA_BUS] = MP_BUS_ISA;
1023 #endif
1024 set_bit(MP_ISA_BUS, mp_bus_not_pci);
1025 pr_debug("Bus #%d is ISA\n", MP_ISA_BUS);
1026
1027 #ifdef CONFIG_X86_ES7000
1028 /*
1029 * Older generations of ES7000 have no legacy identity mappings
1030 */
1031 if (es7000_plat == 1)
1032 return;
1033 #endif
1034
1035 /*
1036 * Use the default configuration for the IRQs 0-15. Unless
1037 * overridden by (MADT) interrupt source override entries.
1038 */
1039 for (i = 0; i < 16; i++) {
1040 int ioapic, pin;
1041 unsigned int dstapic;
1042 int idx;
1043 u32 gsi;
1044
1045 /* Locate the gsi that irq i maps to. */
1046 if (acpi_isa_irq_to_gsi(i, &gsi))
1047 continue;
1048
1049 /*
1050 * Locate the IOAPIC that manages the ISA IRQ.
1051 */
1052 ioapic = mp_find_ioapic(gsi);
1053 if (ioapic < 0)
1054 continue;
1055 pin = mp_find_ioapic_pin(ioapic, gsi);
1056 dstapic = mp_ioapics[ioapic].apicid;
1057
1058 for (idx = 0; idx < mp_irq_entries; idx++) {
1059 struct mpc_intsrc *irq = mp_irqs + idx;
1060
1061 /* Do we already have a mapping for this ISA IRQ? */
1062 if (irq->srcbus == MP_ISA_BUS && irq->srcbusirq == i)
1063 break;
1064
1065 /* Do we already have a mapping for this IOAPIC pin */
1066 if (irq->dstapic == dstapic && irq->dstirq == pin)
1067 break;
1068 }
1069
1070 if (idx != mp_irq_entries) {
1071 printk(KERN_DEBUG "ACPI: IRQ%d used by override.\n", i);
1072 continue; /* IRQ already used */
1073 }
1074
1075 mp_irq.type = MP_INTSRC;
1076 mp_irq.irqflag = 0; /* Conforming */
1077 mp_irq.srcbus = MP_ISA_BUS;
1078 mp_irq.dstapic = dstapic;
1079 mp_irq.irqtype = mp_INT;
1080 mp_irq.srcbusirq = i; /* Identity mapped */
1081 mp_irq.dstirq = pin;
1082
1083 save_mp_irq(&mp_irq);
1084 }
1085 }
1086
1087 static int mp_config_acpi_gsi(struct device *dev, u32 gsi, int trigger,
1088 int polarity)
1089 {
1090 #ifdef CONFIG_X86_MPPARSE
1091 struct mpc_intsrc mp_irq;
1092 struct pci_dev *pdev;
1093 unsigned char number;
1094 unsigned int devfn;
1095 int ioapic;
1096 u8 pin;
1097
1098 if (!acpi_ioapic)
1099 return 0;
1100 if (!dev)
1101 return 0;
1102 if (dev->bus != &pci_bus_type)
1103 return 0;
1104
1105 pdev = to_pci_dev(dev);
1106 number = pdev->bus->number;
1107 devfn = pdev->devfn;
1108 pin = pdev->pin;
1109 /* print the entry should happen on mptable identically */
1110 mp_irq.type = MP_INTSRC;
1111 mp_irq.irqtype = mp_INT;
1112 mp_irq.irqflag = (trigger == ACPI_EDGE_SENSITIVE ? 4 : 0x0c) |
1113 (polarity == ACPI_ACTIVE_HIGH ? 1 : 3);
1114 mp_irq.srcbus = number;
1115 mp_irq.srcbusirq = (((devfn >> 3) & 0x1f) << 2) | ((pin - 1) & 3);
1116 ioapic = mp_find_ioapic(gsi);
1117 mp_irq.dstapic = mp_ioapics[ioapic].apicid;
1118 mp_irq.dstirq = mp_find_ioapic_pin(ioapic, gsi);
1119
1120 save_mp_irq(&mp_irq);
1121 #endif
1122 return 0;
1123 }
1124
1125 int mp_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity)
1126 {
1127 int ioapic;
1128 int ioapic_pin;
1129 struct io_apic_irq_attr irq_attr;
1130
1131 if (acpi_irq_model != ACPI_IRQ_MODEL_IOAPIC)
1132 return gsi;
1133
1134 /* Don't set up the ACPI SCI because it's already set up */
1135 if (acpi_gbl_FADT.sci_interrupt == gsi)
1136 return gsi;
1137
1138 ioapic = mp_find_ioapic(gsi);
1139 if (ioapic < 0) {
1140 printk(KERN_WARNING "No IOAPIC for GSI %u\n", gsi);
1141 return gsi;
1142 }
1143
1144 ioapic_pin = mp_find_ioapic_pin(ioapic, gsi);
1145
1146 if (ioapic_pin > MP_MAX_IOAPIC_PIN) {
1147 printk(KERN_ERR "Invalid reference to IOAPIC pin "
1148 "%d-%d\n", mp_ioapics[ioapic].apicid,
1149 ioapic_pin);
1150 return gsi;
1151 }
1152
1153 if (enable_update_mptable)
1154 mp_config_acpi_gsi(dev, gsi, trigger, polarity);
1155
1156 set_io_apic_irq_attr(&irq_attr, ioapic, ioapic_pin,
1157 trigger == ACPI_EDGE_SENSITIVE ? 0 : 1,
1158 polarity == ACPI_ACTIVE_HIGH ? 0 : 1);
1159 io_apic_set_pci_routing(dev, gsi_to_irq(gsi), &irq_attr);
1160
1161 return gsi;
1162 }
1163
1164 /*
1165 * Parse IOAPIC related entries in MADT
1166 * returns 0 on success, < 0 on error
1167 */
1168 static int __init acpi_parse_madt_ioapic_entries(void)
1169 {
1170 int count;
1171
1172 /*
1173 * ACPI interpreter is required to complete interrupt setup,
1174 * so if it is off, don't enumerate the io-apics with ACPI.
1175 * If MPS is present, it will handle them,
1176 * otherwise the system will stay in PIC mode
1177 */
1178 if (acpi_disabled || acpi_noirq)
1179 return -ENODEV;
1180
1181 if (!cpu_has_apic)
1182 return -ENODEV;
1183
1184 /*
1185 * if "noapic" boot option, don't look for IO-APICs
1186 */
1187 if (skip_ioapic_setup) {
1188 printk(KERN_INFO PREFIX "Skipping IOAPIC probe "
1189 "due to 'noapic' option.\n");
1190 return -ENODEV;
1191 }
1192
1193 count =
1194 acpi_table_parse_madt(ACPI_MADT_TYPE_IO_APIC, acpi_parse_ioapic,
1195 MAX_IO_APICS);
1196 if (!count) {
1197 printk(KERN_ERR PREFIX "No IOAPIC entries present\n");
1198 return -ENODEV;
1199 } else if (count < 0) {
1200 printk(KERN_ERR PREFIX "Error parsing IOAPIC entry\n");
1201 return count;
1202 }
1203
1204 count =
1205 acpi_table_parse_madt(ACPI_MADT_TYPE_INTERRUPT_OVERRIDE, acpi_parse_int_src_ovr,
1206 nr_irqs);
1207 if (count < 0) {
1208 printk(KERN_ERR PREFIX
1209 "Error parsing interrupt source overrides entry\n");
1210 /* TBD: Cleanup to allow fallback to MPS */
1211 return count;
1212 }
1213
1214 /*
1215 * If BIOS did not supply an INT_SRC_OVR for the SCI
1216 * pretend we got one so we can set the SCI flags.
1217 */
1218 if (!acpi_sci_override_gsi)
1219 acpi_sci_ioapic_setup(acpi_gbl_FADT.sci_interrupt, 0, 0,
1220 acpi_gbl_FADT.sci_interrupt);
1221
1222 /* Fill in identity legacy mappings where no override */
1223 mp_config_acpi_legacy_irqs();
1224
1225 count =
1226 acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE, acpi_parse_nmi_src,
1227 nr_irqs);
1228 if (count < 0) {
1229 printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n");
1230 /* TBD: Cleanup to allow fallback to MPS */
1231 return count;
1232 }
1233
1234 return 0;
1235 }
1236 #else
1237 static inline int acpi_parse_madt_ioapic_entries(void)
1238 {
1239 return -1;
1240 }
1241 #endif /* !CONFIG_X86_IO_APIC */
1242
1243 static void __init early_acpi_process_madt(void)
1244 {
1245 #ifdef CONFIG_X86_LOCAL_APIC
1246 int error;
1247
1248 if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) {
1249
1250 /*
1251 * Parse MADT LAPIC entries
1252 */
1253 error = early_acpi_parse_madt_lapic_addr_ovr();
1254 if (!error) {
1255 acpi_lapic = 1;
1256 smp_found_config = 1;
1257 }
1258 if (error == -EINVAL) {
1259 /*
1260 * Dell Precision Workstation 410, 610 come here.
1261 */
1262 printk(KERN_ERR PREFIX
1263 "Invalid BIOS MADT, disabling ACPI\n");
1264 disable_acpi();
1265 }
1266 }
1267 #endif
1268 }
1269
1270 static void __init acpi_process_madt(void)
1271 {
1272 #ifdef CONFIG_X86_LOCAL_APIC
1273 int error;
1274
1275 if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) {
1276
1277 /*
1278 * Parse MADT LAPIC entries
1279 */
1280 error = acpi_parse_madt_lapic_entries();
1281 if (!error) {
1282 acpi_lapic = 1;
1283
1284 /*
1285 * Parse MADT IO-APIC entries
1286 */
1287 error = acpi_parse_madt_ioapic_entries();
1288 if (!error) {
1289 acpi_set_irq_model_ioapic();
1290
1291 smp_found_config = 1;
1292 }
1293 }
1294 if (error == -EINVAL) {
1295 /*
1296 * Dell Precision Workstation 410, 610 come here.
1297 */
1298 printk(KERN_ERR PREFIX
1299 "Invalid BIOS MADT, disabling ACPI\n");
1300 disable_acpi();
1301 }
1302 } else {
1303 /*
1304 * ACPI found no MADT, and so ACPI wants UP PIC mode.
1305 * In the event an MPS table was found, forget it.
1306 * Boot with "acpi=off" to use MPS on such a system.
1307 */
1308 if (smp_found_config) {
1309 printk(KERN_WARNING PREFIX
1310 "No APIC-table, disabling MPS\n");
1311 smp_found_config = 0;
1312 }
1313 }
1314
1315 /*
1316 * ACPI supports both logical (e.g. Hyper-Threading) and physical
1317 * processors, where MPS only supports physical.
1318 */
1319 if (acpi_lapic && acpi_ioapic)
1320 printk(KERN_INFO "Using ACPI (MADT) for SMP configuration "
1321 "information\n");
1322 else if (acpi_lapic)
1323 printk(KERN_INFO "Using ACPI for processor (LAPIC) "
1324 "configuration information\n");
1325 #endif
1326 return;
1327 }
1328
1329 static int __init disable_acpi_irq(const struct dmi_system_id *d)
1330 {
1331 if (!acpi_force) {
1332 printk(KERN_NOTICE "%s detected: force use of acpi=noirq\n",
1333 d->ident);
1334 acpi_noirq_set();
1335 }
1336 return 0;
1337 }
1338
1339 static int __init disable_acpi_pci(const struct dmi_system_id *d)
1340 {
1341 if (!acpi_force) {
1342 printk(KERN_NOTICE "%s detected: force use of pci=noacpi\n",
1343 d->ident);
1344 acpi_disable_pci();
1345 }
1346 return 0;
1347 }
1348
1349 static int __init dmi_disable_acpi(const struct dmi_system_id *d)
1350 {
1351 if (!acpi_force) {
1352 printk(KERN_NOTICE "%s detected: acpi off\n", d->ident);
1353 disable_acpi();
1354 } else {
1355 printk(KERN_NOTICE
1356 "Warning: DMI blacklist says broken, but acpi forced\n");
1357 }
1358 return 0;
1359 }
1360
1361 /*
1362 * Force ignoring BIOS IRQ0 pin2 override
1363 */
1364 static int __init dmi_ignore_irq0_timer_override(const struct dmi_system_id *d)
1365 {
1366 /*
1367 * The ati_ixp4x0_rev() early PCI quirk should have set
1368 * the acpi_skip_timer_override flag already:
1369 */
1370 if (!acpi_skip_timer_override) {
1371 WARN(1, KERN_ERR "ati_ixp4x0 quirk not complete.\n");
1372 pr_notice("%s detected: Ignoring BIOS IRQ0 pin2 override\n",
1373 d->ident);
1374 acpi_skip_timer_override = 1;
1375 }
1376 return 0;
1377 }
1378
1379 /*
1380 * If your system is blacklisted here, but you find that acpi=force
1381 * works for you, please contact linux-acpi@vger.kernel.org
1382 */
1383 static struct dmi_system_id __initdata acpi_dmi_table[] = {
1384 /*
1385 * Boxes that need ACPI disabled
1386 */
1387 {
1388 .callback = dmi_disable_acpi,
1389 .ident = "IBM Thinkpad",
1390 .matches = {
1391 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1392 DMI_MATCH(DMI_BOARD_NAME, "2629H1G"),
1393 },
1394 },
1395
1396 /*
1397 * Boxes that need ACPI PCI IRQ routing disabled
1398 */
1399 {
1400 .callback = disable_acpi_irq,
1401 .ident = "ASUS A7V",
1402 .matches = {
1403 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC"),
1404 DMI_MATCH(DMI_BOARD_NAME, "<A7V>"),
1405 /* newer BIOS, Revision 1011, does work */
1406 DMI_MATCH(DMI_BIOS_VERSION,
1407 "ASUS A7V ACPI BIOS Revision 1007"),
1408 },
1409 },
1410 {
1411 /*
1412 * Latest BIOS for IBM 600E (1.16) has bad pcinum
1413 * for LPC bridge, which is needed for the PCI
1414 * interrupt links to work. DSDT fix is in bug 5966.
1415 * 2645, 2646 model numbers are shared with 600/600E/600X
1416 */
1417 .callback = disable_acpi_irq,
1418 .ident = "IBM Thinkpad 600 Series 2645",
1419 .matches = {
1420 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1421 DMI_MATCH(DMI_BOARD_NAME, "2645"),
1422 },
1423 },
1424 {
1425 .callback = disable_acpi_irq,
1426 .ident = "IBM Thinkpad 600 Series 2646",
1427 .matches = {
1428 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1429 DMI_MATCH(DMI_BOARD_NAME, "2646"),
1430 },
1431 },
1432 /*
1433 * Boxes that need ACPI PCI IRQ routing and PCI scan disabled
1434 */
1435 { /* _BBN 0 bug */
1436 .callback = disable_acpi_pci,
1437 .ident = "ASUS PR-DLS",
1438 .matches = {
1439 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
1440 DMI_MATCH(DMI_BOARD_NAME, "PR-DLS"),
1441 DMI_MATCH(DMI_BIOS_VERSION,
1442 "ASUS PR-DLS ACPI BIOS Revision 1010"),
1443 DMI_MATCH(DMI_BIOS_DATE, "03/21/2003")
1444 },
1445 },
1446 {
1447 .callback = disable_acpi_pci,
1448 .ident = "Acer TravelMate 36x Laptop",
1449 .matches = {
1450 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
1451 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 360"),
1452 },
1453 },
1454 {}
1455 };
1456
1457 /* second table for DMI checks that should run after early-quirks */
1458 static struct dmi_system_id __initdata acpi_dmi_table_late[] = {
1459 /*
1460 * HP laptops which use a DSDT reporting as HP/SB400/10000,
1461 * which includes some code which overrides all temperature
1462 * trip points to 16C if the INTIN2 input of the I/O APIC
1463 * is enabled. This input is incorrectly designated the
1464 * ISA IRQ 0 via an interrupt source override even though
1465 * it is wired to the output of the master 8259A and INTIN0
1466 * is not connected at all. Force ignoring BIOS IRQ0 pin2
1467 * override in that cases.
1468 */
1469 {
1470 .callback = dmi_ignore_irq0_timer_override,
1471 .ident = "HP nx6115 laptop",
1472 .matches = {
1473 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1474 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6115"),
1475 },
1476 },
1477 {
1478 .callback = dmi_ignore_irq0_timer_override,
1479 .ident = "HP NX6125 laptop",
1480 .matches = {
1481 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1482 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6125"),
1483 },
1484 },
1485 {
1486 .callback = dmi_ignore_irq0_timer_override,
1487 .ident = "HP NX6325 laptop",
1488 .matches = {
1489 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1490 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6325"),
1491 },
1492 },
1493 {
1494 .callback = dmi_ignore_irq0_timer_override,
1495 .ident = "HP 6715b laptop",
1496 .matches = {
1497 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1498 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq 6715b"),
1499 },
1500 },
1501 {}
1502 };
1503
1504 /*
1505 * acpi_boot_table_init() and acpi_boot_init()
1506 * called from setup_arch(), always.
1507 * 1. checksums all tables
1508 * 2. enumerates lapics
1509 * 3. enumerates io-apics
1510 *
1511 * acpi_table_init() is separate to allow reading SRAT without
1512 * other side effects.
1513 *
1514 * side effects of acpi_boot_init:
1515 * acpi_lapic = 1 if LAPIC found
1516 * acpi_ioapic = 1 if IOAPIC found
1517 * if (acpi_lapic && acpi_ioapic) smp_found_config = 1;
1518 * if acpi_blacklisted() acpi_disabled = 1;
1519 * acpi_irq_model=...
1520 * ...
1521 */
1522
1523 void __init acpi_boot_table_init(void)
1524 {
1525 dmi_check_system(acpi_dmi_table);
1526
1527 /*
1528 * If acpi_disabled, bail out
1529 */
1530 if (acpi_disabled)
1531 return;
1532
1533 /*
1534 * Initialize the ACPI boot-time table parser.
1535 */
1536 if (acpi_table_init()) {
1537 disable_acpi();
1538 return;
1539 }
1540
1541 acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf);
1542
1543 /*
1544 * blacklist may disable ACPI entirely
1545 */
1546 if (acpi_blacklisted()) {
1547 if (acpi_force) {
1548 printk(KERN_WARNING PREFIX "acpi=force override\n");
1549 } else {
1550 printk(KERN_WARNING PREFIX "Disabling ACPI support\n");
1551 disable_acpi();
1552 return;
1553 }
1554 }
1555 }
1556
1557 int __init early_acpi_boot_init(void)
1558 {
1559 /*
1560 * If acpi_disabled, bail out
1561 */
1562 if (acpi_disabled)
1563 return 1;
1564
1565 /*
1566 * Process the Multiple APIC Description Table (MADT), if present
1567 */
1568 early_acpi_process_madt();
1569
1570 return 0;
1571 }
1572
1573 int __init acpi_boot_init(void)
1574 {
1575 /* those are executed after early-quirks are executed */
1576 dmi_check_system(acpi_dmi_table_late);
1577
1578 /*
1579 * If acpi_disabled, bail out
1580 */
1581 if (acpi_disabled)
1582 return 1;
1583
1584 acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf);
1585
1586 /*
1587 * set sci_int and PM timer address
1588 */
1589 acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt);
1590
1591 /*
1592 * Process the Multiple APIC Description Table (MADT), if present
1593 */
1594 acpi_process_madt();
1595
1596 acpi_table_parse(ACPI_SIG_HPET, acpi_parse_hpet);
1597
1598 if (!acpi_noirq)
1599 x86_init.pci.init = pci_acpi_init;
1600
1601 return 0;
1602 }
1603
1604 static int __init parse_acpi(char *arg)
1605 {
1606 if (!arg)
1607 return -EINVAL;
1608
1609 /* "acpi=off" disables both ACPI table parsing and interpreter */
1610 if (strcmp(arg, "off") == 0) {
1611 disable_acpi();
1612 }
1613 /* acpi=force to over-ride black-list */
1614 else if (strcmp(arg, "force") == 0) {
1615 acpi_force = 1;
1616 acpi_disabled = 0;
1617 }
1618 /* acpi=strict disables out-of-spec workarounds */
1619 else if (strcmp(arg, "strict") == 0) {
1620 acpi_strict = 1;
1621 }
1622 /* acpi=rsdt use RSDT instead of XSDT */
1623 else if (strcmp(arg, "rsdt") == 0) {
1624 acpi_rsdt_forced = 1;
1625 }
1626 /* "acpi=noirq" disables ACPI interrupt routing */
1627 else if (strcmp(arg, "noirq") == 0) {
1628 acpi_noirq_set();
1629 }
1630 /* "acpi=copy_dsdt" copys DSDT */
1631 else if (strcmp(arg, "copy_dsdt") == 0) {
1632 acpi_gbl_copy_dsdt_locally = 1;
1633 } else {
1634 /* Core will printk when we return error. */
1635 return -EINVAL;
1636 }
1637 return 0;
1638 }
1639 early_param("acpi", parse_acpi);
1640
1641 /* FIXME: Using pci= for an ACPI parameter is a travesty. */
1642 static int __init parse_pci(char *arg)
1643 {
1644 if (arg && strcmp(arg, "noacpi") == 0)
1645 acpi_disable_pci();
1646 return 0;
1647 }
1648 early_param("pci", parse_pci);
1649
1650 int __init acpi_mps_check(void)
1651 {
1652 #if defined(CONFIG_X86_LOCAL_APIC) && !defined(CONFIG_X86_MPPARSE)
1653 /* mptable code is not built-in*/
1654 if (acpi_disabled || acpi_noirq) {
1655 printk(KERN_WARNING "MPS support code is not built-in.\n"
1656 "Using acpi=off or acpi=noirq or pci=noacpi "
1657 "may have problem\n");
1658 return 1;
1659 }
1660 #endif
1661 return 0;
1662 }
1663
1664 #ifdef CONFIG_X86_IO_APIC
1665 static int __init parse_acpi_skip_timer_override(char *arg)
1666 {
1667 acpi_skip_timer_override = 1;
1668 return 0;
1669 }
1670 early_param("acpi_skip_timer_override", parse_acpi_skip_timer_override);
1671
1672 static int __init parse_acpi_use_timer_override(char *arg)
1673 {
1674 acpi_use_timer_override = 1;
1675 return 0;
1676 }
1677 early_param("acpi_use_timer_override", parse_acpi_use_timer_override);
1678 #endif /* CONFIG_X86_IO_APIC */
1679
1680 static int __init setup_acpi_sci(char *s)
1681 {
1682 if (!s)
1683 return -EINVAL;
1684 if (!strcmp(s, "edge"))
1685 acpi_sci_flags = ACPI_MADT_TRIGGER_EDGE |
1686 (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK);
1687 else if (!strcmp(s, "level"))
1688 acpi_sci_flags = ACPI_MADT_TRIGGER_LEVEL |
1689 (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK);
1690 else if (!strcmp(s, "high"))
1691 acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_HIGH |
1692 (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK);
1693 else if (!strcmp(s, "low"))
1694 acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_LOW |
1695 (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK);
1696 else
1697 return -EINVAL;
1698 return 0;
1699 }
1700 early_param("acpi_sci", setup_acpi_sci);
1701
1702 int __acpi_acquire_global_lock(unsigned int *lock)
1703 {
1704 unsigned int old, new, val;
1705 do {
1706 old = *lock;
1707 new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1));
1708 val = cmpxchg(lock, old, new);
1709 } while (unlikely (val != old));
1710 return (new < 3) ? -1 : 0;
1711 }
1712
1713 int __acpi_release_global_lock(unsigned int *lock)
1714 {
1715 unsigned int old, new, val;
1716 do {
1717 old = *lock;
1718 new = old & ~0x3;
1719 val = cmpxchg(lock, old, new);
1720 } while (unlikely (val != old));
1721 return old & 0x1;
1722 }
kernel source for telekom puls (alcatel/mediatek)