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GUI: Fix Tomato RAF theme for all builds. Compilation typo.
[tomato.git] / release / src-rt-6.x.4708 / linux / linux-2.6.36 / arch / x86 / kernel / acpi / boot.c
blob88b7dc8c0162b0c459cee4f3b00b29a04a97c7c4
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 /*
517 * success: return IRQ number (>=0)
518 * failure: return < 0
519 */
520 int acpi_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity)
521 {
522 unsigned int irq;
523 unsigned int plat_gsi = gsi;
524
525 #ifdef CONFIG_PCI
526 /*
527 * Make sure all (legacy) PCI IRQs are set as level-triggered.
528 */
529 if (acpi_irq_model == ACPI_IRQ_MODEL_PIC) {
530 if (trigger == ACPI_LEVEL_SENSITIVE)
531 eisa_set_level_irq(gsi);
532 }
533 #endif
534
535 #ifdef CONFIG_X86_IO_APIC
536 if (acpi_irq_model == ACPI_IRQ_MODEL_IOAPIC) {
537 plat_gsi = mp_register_gsi(dev, gsi, trigger, polarity);
538 }
539 #endif
540 irq = gsi_to_irq(plat_gsi);
541
542 return irq;
543 }
544
545 /*
546 * ACPI based hotplug support for CPU
547 */
548 #ifdef CONFIG_ACPI_HOTPLUG_CPU
549 #include <acpi/processor.h>
550
551 static void acpi_map_cpu2node(acpi_handle handle, int cpu, int physid)
552 {
553 #ifdef CONFIG_ACPI_NUMA
554 int nid;
555
556 nid = acpi_get_node(handle);
557 if (nid == -1 || !node_online(nid))
558 return;
559 #ifdef CONFIG_X86_64
560 apicid_to_node[physid] = nid;
561 numa_set_node(cpu, nid);
562 #else /* CONFIG_X86_32 */
563 apicid_2_node[physid] = nid;
564 cpu_to_node_map[cpu] = nid;
565 #endif
566
567 #endif
568 }
569
570 static int __cpuinit _acpi_map_lsapic(acpi_handle handle, int *pcpu)
571 {
572 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
573 union acpi_object *obj;
574 struct acpi_madt_local_apic *lapic;
575 cpumask_var_t tmp_map, new_map;
576 u8 physid;
577 int cpu;
578 int retval = -ENOMEM;
579
580 if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer)))
581 return -EINVAL;
582
583 if (!buffer.length || !buffer.pointer)
584 return -EINVAL;
585
586 obj = buffer.pointer;
587 if (obj->type != ACPI_TYPE_BUFFER ||
588 obj->buffer.length < sizeof(*lapic)) {
589 kfree(buffer.pointer);
590 return -EINVAL;
591 }
592
593 lapic = (struct acpi_madt_local_apic *)obj->buffer.pointer;
594
595 if (lapic->header.type != ACPI_MADT_TYPE_LOCAL_APIC ||
596 !(lapic->lapic_flags & ACPI_MADT_ENABLED)) {
597 kfree(buffer.pointer);
598 return -EINVAL;
599 }
600
601 physid = lapic->id;
602
603 kfree(buffer.pointer);
604 buffer.length = ACPI_ALLOCATE_BUFFER;
605 buffer.pointer = NULL;
606
607 if (!alloc_cpumask_var(&tmp_map, GFP_KERNEL))
608 goto out;
609
610 if (!alloc_cpumask_var(&new_map, GFP_KERNEL))
611 goto free_tmp_map;
612
613 cpumask_copy(tmp_map, cpu_present_mask);
614 acpi_register_lapic(physid, lapic->lapic_flags & ACPI_MADT_ENABLED);
615
616 /*
617 * If mp_register_lapic successfully generates a new logical cpu
618 * number, then the following will get us exactly what was mapped
619 */
620 cpumask_andnot(new_map, cpu_present_mask, tmp_map);
621 if (cpumask_empty(new_map)) {
622 printk ("Unable to map lapic to logical cpu number\n");
623 retval = -EINVAL;
624 goto free_new_map;
625 }
626
627 acpi_processor_set_pdc(handle);
628
629 cpu = cpumask_first(new_map);
630 acpi_map_cpu2node(handle, cpu, physid);
631
632 *pcpu = cpu;
633 retval = 0;
634
635 free_new_map:
636 free_cpumask_var(new_map);
637 free_tmp_map:
638 free_cpumask_var(tmp_map);
639 out:
640 return retval;
641 }
642
643 /* wrapper to silence section mismatch warning */
644 int __ref acpi_map_lsapic(acpi_handle handle, int *pcpu)
645 {
646 return _acpi_map_lsapic(handle, pcpu);
647 }
648 EXPORT_SYMBOL(acpi_map_lsapic);
649
650 int acpi_unmap_lsapic(int cpu)
651 {
652 per_cpu(x86_cpu_to_apicid, cpu) = -1;
653 set_cpu_present(cpu, false);
654 num_processors--;
655
656 return (0);
657 }
658
659 EXPORT_SYMBOL(acpi_unmap_lsapic);
660 #endif /* CONFIG_ACPI_HOTPLUG_CPU */
661
662 int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base)
663 {
664 /* TBD */
665 return -EINVAL;
666 }
667
668 EXPORT_SYMBOL(acpi_register_ioapic);
669
670 int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base)
671 {
672 /* TBD */
673 return -EINVAL;
674 }
675
676 EXPORT_SYMBOL(acpi_unregister_ioapic);
677
678 static int __init acpi_parse_sbf(struct acpi_table_header *table)
679 {
680 struct acpi_table_boot *sb;
681
682 sb = (struct acpi_table_boot *)table;
683 if (!sb) {
684 printk(KERN_WARNING PREFIX "Unable to map SBF\n");
685 return -ENODEV;
686 }
687
688 sbf_port = sb->cmos_index; /* Save CMOS port */
689
690 return 0;
691 }
692
693 #ifdef CONFIG_HPET_TIMER
694 #include <asm/hpet.h>
695
696 static struct __initdata resource *hpet_res;
697
698 static int __init acpi_parse_hpet(struct acpi_table_header *table)
699 {
700 struct acpi_table_hpet *hpet_tbl;
701
702 hpet_tbl = (struct acpi_table_hpet *)table;
703 if (!hpet_tbl) {
704 printk(KERN_WARNING PREFIX "Unable to map HPET\n");
705 return -ENODEV;
706 }
707
708 if (hpet_tbl->address.space_id != ACPI_SPACE_MEM) {
709 printk(KERN_WARNING PREFIX "HPET timers must be located in "
710 "memory.\n");
711 return -1;
712 }
713
714 hpet_address = hpet_tbl->address.address;
715 hpet_blockid = hpet_tbl->sequence;
716
717 /*
718 * Some broken BIOSes advertise HPET at 0x0. We really do not
719 * want to allocate a resource there.
720 */
721 if (!hpet_address) {
722 printk(KERN_WARNING PREFIX
723 "HPET id: %#x base: %#lx is invalid\n",
724 hpet_tbl->id, hpet_address);
725 return 0;
726 }
727 #ifdef CONFIG_X86_64
728 /*
729 * Some even more broken BIOSes advertise HPET at
730 * 0xfed0000000000000 instead of 0xfed00000. Fix it up and add
731 * some noise:
732 */
733 if (hpet_address == 0xfed0000000000000UL) {
734 if (!hpet_force_user) {
735 printk(KERN_WARNING PREFIX "HPET id: %#x "
736 "base: 0xfed0000000000000 is bogus\n "
737 "try hpet=force on the kernel command line to "
738 "fix it up to 0xfed00000.\n", hpet_tbl->id);
739 hpet_address = 0;
740 return 0;
741 }
742 printk(KERN_WARNING PREFIX
743 "HPET id: %#x base: 0xfed0000000000000 fixed up "
744 "to 0xfed00000.\n", hpet_tbl->id);
745 hpet_address >>= 32;
746 }
747 #endif
748 printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n",
749 hpet_tbl->id, hpet_address);
750
751 /*
752 * Allocate and initialize the HPET firmware resource for adding into
753 * the resource tree during the lateinit timeframe.
754 */
755 #define HPET_RESOURCE_NAME_SIZE 9
756 hpet_res = alloc_bootmem(sizeof(*hpet_res) + HPET_RESOURCE_NAME_SIZE);
757
758 hpet_res->name = (void *)&hpet_res[1];
759 hpet_res->flags = IORESOURCE_MEM;
760 snprintf((char *)hpet_res->name, HPET_RESOURCE_NAME_SIZE, "HPET %u",
761 hpet_tbl->sequence);
762
763 hpet_res->start = hpet_address;
764 hpet_res->end = hpet_address + (1 * 1024) - 1;
765
766 return 0;
767 }
768
769 /*
770 * hpet_insert_resource inserts the HPET resources used into the resource
771 * tree.
772 */
773 static __init int hpet_insert_resource(void)
774 {
775 if (!hpet_res)
776 return 1;
777
778 return insert_resource(&iomem_resource, hpet_res);
779 }
780
781 late_initcall(hpet_insert_resource);
782
783 #else
784 #define acpi_parse_hpet NULL
785 #endif
786
787 static int __init acpi_parse_fadt(struct acpi_table_header *table)
788 {
789
790 #ifdef CONFIG_X86_PM_TIMER
791 /* detect the location of the ACPI PM Timer */
792 if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID) {
793 /* FADT rev. 2 */
794 if (acpi_gbl_FADT.xpm_timer_block.space_id !=
795 ACPI_ADR_SPACE_SYSTEM_IO)
796 return 0;
797
798 pmtmr_ioport = acpi_gbl_FADT.xpm_timer_block.address;
799 /*
800 * "X" fields are optional extensions to the original V1.0
801 * fields, so we must selectively expand V1.0 fields if the
802 * corresponding X field is zero.
803 */
804 if (!pmtmr_ioport)
805 pmtmr_ioport = acpi_gbl_FADT.pm_timer_block;
806 } else {
807 /* FADT rev. 1 */
808 pmtmr_ioport = acpi_gbl_FADT.pm_timer_block;
809 }
810 if (pmtmr_ioport)
811 printk(KERN_INFO PREFIX "PM-Timer IO Port: %#x\n",
812 pmtmr_ioport);
813 #endif
814 return 0;
815 }
816
817 #ifdef CONFIG_X86_LOCAL_APIC
818 /*
819 * Parse LAPIC entries in MADT
820 * returns 0 on success, < 0 on error
821 */
822
823 static void __init acpi_register_lapic_address(unsigned long address)
824 {
825 mp_lapic_addr = address;
826
827 set_fixmap_nocache(FIX_APIC_BASE, address);
828 if (boot_cpu_physical_apicid == -1U) {
829 boot_cpu_physical_apicid = read_apic_id();
830 apic_version[boot_cpu_physical_apicid] =
831 GET_APIC_VERSION(apic_read(APIC_LVR));
832 }
833 }
834
835 static int __init early_acpi_parse_madt_lapic_addr_ovr(void)
836 {
837 int count;
838
839 if (!cpu_has_apic)
840 return -ENODEV;
841
842 /*
843 * Note that the LAPIC address is obtained from the MADT (32-bit value)
844 * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value).
845 */
846
847 count =
848 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE,
849 acpi_parse_lapic_addr_ovr, 0);
850 if (count < 0) {
851 printk(KERN_ERR PREFIX
852 "Error parsing LAPIC address override entry\n");
853 return count;
854 }
855
856 acpi_register_lapic_address(acpi_lapic_addr);
857
858 return count;
859 }
860
861 static int __init acpi_parse_madt_lapic_entries(void)
862 {
863 int count;
864 int x2count = 0;
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 count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_SAPIC,
886 acpi_parse_sapic, MAX_APICS);
887
888 if (!count) {
889 x2count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC,
890 acpi_parse_x2apic, MAX_APICS);
891 count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC,
892 acpi_parse_lapic, MAX_APICS);
893 }
894 if (!count && !x2count) {
895 printk(KERN_ERR PREFIX "No LAPIC entries present\n");
896 /* TBD: Cleanup to allow fallback to MPS */
897 return -ENODEV;
898 } else if (count < 0 || x2count < 0) {
899 printk(KERN_ERR PREFIX "Error parsing LAPIC entry\n");
900 /* TBD: Cleanup to allow fallback to MPS */
901 return count;
902 }
903
904 x2count =
905 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC_NMI,
906 acpi_parse_x2apic_nmi, 0);
907 count =
908 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI, acpi_parse_lapic_nmi, 0);
909 if (count < 0 || x2count < 0) {
910 printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n");
911 /* TBD: Cleanup to allow fallback to MPS */
912 return count;
913 }
914 return 0;
915 }
916 #endif /* CONFIG_X86_LOCAL_APIC */
917
918 #ifdef CONFIG_X86_IO_APIC
919 #define MP_ISA_BUS 0
920
921 #ifdef CONFIG_X86_ES7000
922 extern int es7000_plat;
923 #endif
924
925 static void assign_to_mp_irq(struct mpc_intsrc *m,
926 struct mpc_intsrc *mp_irq)
927 {
928 memcpy(mp_irq, m, sizeof(struct mpc_intsrc));
929 }
930
931 static int mp_irq_cmp(struct mpc_intsrc *mp_irq,
932 struct mpc_intsrc *m)
933 {
934 return memcmp(mp_irq, m, sizeof(struct mpc_intsrc));
935 }
936
937 static void save_mp_irq(struct mpc_intsrc *m)
938 {
939 int i;
940
941 for (i = 0; i < mp_irq_entries; i++) {
942 if (!mp_irq_cmp(&mp_irqs[i], m))
943 return;
944 }
945
946 assign_to_mp_irq(m, &mp_irqs[mp_irq_entries]);
947 if (++mp_irq_entries == MAX_IRQ_SOURCES)
948 panic("Max # of irq sources exceeded!!\n");
949 }
950
951 void __init mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger, u32 gsi)
952 {
953 int ioapic;
954 int pin;
955 struct mpc_intsrc mp_irq;
956
957 /*
958 * Convert 'gsi' to 'ioapic.pin'.
959 */
960 ioapic = mp_find_ioapic(gsi);
961 if (ioapic < 0)
962 return;
963 pin = mp_find_ioapic_pin(ioapic, gsi);
964
965 /*
966 * TBD: This check is for faulty timer entries, where the override
967 * erroneously sets the trigger to level, resulting in a HUGE
968 * increase of timer interrupts!
969 */
970 if ((bus_irq == 0) && (trigger == 3))
971 trigger = 1;
972
973 mp_irq.type = MP_INTSRC;
974 mp_irq.irqtype = mp_INT;
975 mp_irq.irqflag = (trigger << 2) | polarity;
976 mp_irq.srcbus = MP_ISA_BUS;
977 mp_irq.srcbusirq = bus_irq; /* IRQ */
978 mp_irq.dstapic = mp_ioapics[ioapic].apicid; /* APIC ID */
979 mp_irq.dstirq = pin; /* INTIN# */
980
981 save_mp_irq(&mp_irq);
982
983 isa_irq_to_gsi[bus_irq] = gsi;
984 }
985
986 void __init mp_config_acpi_legacy_irqs(void)
987 {
988 int i;
989 struct mpc_intsrc mp_irq;
990
991 #if defined(CONFIG_MCA) || defined(CONFIG_EISA)
992 /*
993 * Fabricate the legacy ISA bus (bus #31).
994 */
995 mp_bus_id_to_type[MP_ISA_BUS] = MP_BUS_ISA;
996 #endif
997 set_bit(MP_ISA_BUS, mp_bus_not_pci);
998 pr_debug("Bus #%d is ISA\n", MP_ISA_BUS);
999
1000 #ifdef CONFIG_X86_ES7000
1001 /*
1002 * Older generations of ES7000 have no legacy identity mappings
1003 */
1004 if (es7000_plat == 1)
1005 return;
1006 #endif
1007
1008 /*
1009 * Use the default configuration for the IRQs 0-15. Unless
1010 * overridden by (MADT) interrupt source override entries.
1011 */
1012 for (i = 0; i < 16; i++) {
1013 int ioapic, pin;
1014 unsigned int dstapic;
1015 int idx;
1016 u32 gsi;
1017
1018 /* Locate the gsi that irq i maps to. */
1019 if (acpi_isa_irq_to_gsi(i, &gsi))
1020 continue;
1021
1022 /*
1023 * Locate the IOAPIC that manages the ISA IRQ.
1024 */
1025 ioapic = mp_find_ioapic(gsi);
1026 if (ioapic < 0)
1027 continue;
1028 pin = mp_find_ioapic_pin(ioapic, gsi);
1029 dstapic = mp_ioapics[ioapic].apicid;
1030
1031 for (idx = 0; idx < mp_irq_entries; idx++) {
1032 struct mpc_intsrc *irq = mp_irqs + idx;
1033
1034 /* Do we already have a mapping for this ISA IRQ? */
1035 if (irq->srcbus == MP_ISA_BUS && irq->srcbusirq == i)
1036 break;
1037
1038 /* Do we already have a mapping for this IOAPIC pin */
1039 if (irq->dstapic == dstapic && irq->dstirq == pin)
1040 break;
1041 }
1042
1043 if (idx != mp_irq_entries) {
1044 printk(KERN_DEBUG "ACPI: IRQ%d used by override.\n", i);
1045 continue; /* IRQ already used */
1046 }
1047
1048 mp_irq.type = MP_INTSRC;
1049 mp_irq.irqflag = 0; /* Conforming */
1050 mp_irq.srcbus = MP_ISA_BUS;
1051 mp_irq.dstapic = dstapic;
1052 mp_irq.irqtype = mp_INT;
1053 mp_irq.srcbusirq = i; /* Identity mapped */
1054 mp_irq.dstirq = pin;
1055
1056 save_mp_irq(&mp_irq);
1057 }
1058 }
1059
1060 static int mp_config_acpi_gsi(struct device *dev, u32 gsi, int trigger,
1061 int polarity)
1062 {
1063 #ifdef CONFIG_X86_MPPARSE
1064 struct mpc_intsrc mp_irq;
1065 struct pci_dev *pdev;
1066 unsigned char number;
1067 unsigned int devfn;
1068 int ioapic;
1069 u8 pin;
1070
1071 if (!acpi_ioapic)
1072 return 0;
1073 if (!dev)
1074 return 0;
1075 if (dev->bus != &pci_bus_type)
1076 return 0;
1077
1078 pdev = to_pci_dev(dev);
1079 number = pdev->bus->number;
1080 devfn = pdev->devfn;
1081 pin = pdev->pin;
1082 /* print the entry should happen on mptable identically */
1083 mp_irq.type = MP_INTSRC;
1084 mp_irq.irqtype = mp_INT;
1085 mp_irq.irqflag = (trigger == ACPI_EDGE_SENSITIVE ? 4 : 0x0c) |
1086 (polarity == ACPI_ACTIVE_HIGH ? 1 : 3);
1087 mp_irq.srcbus = number;
1088 mp_irq.srcbusirq = (((devfn >> 3) & 0x1f) << 2) | ((pin - 1) & 3);
1089 ioapic = mp_find_ioapic(gsi);
1090 mp_irq.dstapic = mp_ioapics[ioapic].apicid;
1091 mp_irq.dstirq = mp_find_ioapic_pin(ioapic, gsi);
1092
1093 save_mp_irq(&mp_irq);
1094 #endif
1095 return 0;
1096 }
1097
1098 int mp_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity)
1099 {
1100 int ioapic;
1101 int ioapic_pin;
1102 struct io_apic_irq_attr irq_attr;
1103
1104 if (acpi_irq_model != ACPI_IRQ_MODEL_IOAPIC)
1105 return gsi;
1106
1107 /* Don't set up the ACPI SCI because it's already set up */
1108 if (acpi_gbl_FADT.sci_interrupt == gsi)
1109 return gsi;
1110
1111 ioapic = mp_find_ioapic(gsi);
1112 if (ioapic < 0) {
1113 printk(KERN_WARNING "No IOAPIC for GSI %u\n", gsi);
1114 return gsi;
1115 }
1116
1117 ioapic_pin = mp_find_ioapic_pin(ioapic, gsi);
1118
1119 if (ioapic_pin > MP_MAX_IOAPIC_PIN) {
1120 printk(KERN_ERR "Invalid reference to IOAPIC pin "
1121 "%d-%d\n", mp_ioapics[ioapic].apicid,
1122 ioapic_pin);
1123 return gsi;
1124 }
1125
1126 if (enable_update_mptable)
1127 mp_config_acpi_gsi(dev, gsi, trigger, polarity);
1128
1129 set_io_apic_irq_attr(&irq_attr, ioapic, ioapic_pin,
1130 trigger == ACPI_EDGE_SENSITIVE ? 0 : 1,
1131 polarity == ACPI_ACTIVE_HIGH ? 0 : 1);
1132 io_apic_set_pci_routing(dev, gsi_to_irq(gsi), &irq_attr);
1133
1134 return gsi;
1135 }
1136
1137 /*
1138 * Parse IOAPIC related entries in MADT
1139 * returns 0 on success, < 0 on error
1140 */
1141 static int __init acpi_parse_madt_ioapic_entries(void)
1142 {
1143 int count;
1144
1145 /*
1146 * ACPI interpreter is required to complete interrupt setup,
1147 * so if it is off, don't enumerate the io-apics with ACPI.
1148 * If MPS is present, it will handle them,
1149 * otherwise the system will stay in PIC mode
1150 */
1151 if (acpi_disabled || acpi_noirq)
1152 return -ENODEV;
1153
1154 if (!cpu_has_apic)
1155 return -ENODEV;
1156
1157 /*
1158 * if "noapic" boot option, don't look for IO-APICs
1159 */
1160 if (skip_ioapic_setup) {
1161 printk(KERN_INFO PREFIX "Skipping IOAPIC probe "
1162 "due to 'noapic' option.\n");
1163 return -ENODEV;
1164 }
1165
1166 count =
1167 acpi_table_parse_madt(ACPI_MADT_TYPE_IO_APIC, acpi_parse_ioapic,
1168 MAX_IO_APICS);
1169 if (!count) {
1170 printk(KERN_ERR PREFIX "No IOAPIC entries present\n");
1171 return -ENODEV;
1172 } else if (count < 0) {
1173 printk(KERN_ERR PREFIX "Error parsing IOAPIC entry\n");
1174 return count;
1175 }
1176
1177 count =
1178 acpi_table_parse_madt(ACPI_MADT_TYPE_INTERRUPT_OVERRIDE, acpi_parse_int_src_ovr,
1179 nr_irqs);
1180 if (count < 0) {
1181 printk(KERN_ERR PREFIX
1182 "Error parsing interrupt source overrides entry\n");
1183 /* TBD: Cleanup to allow fallback to MPS */
1184 return count;
1185 }
1186
1187 /*
1188 * If BIOS did not supply an INT_SRC_OVR for the SCI
1189 * pretend we got one so we can set the SCI flags.
1190 */
1191 if (!acpi_sci_override_gsi)
1192 acpi_sci_ioapic_setup(acpi_gbl_FADT.sci_interrupt, 0, 0,
1193 acpi_gbl_FADT.sci_interrupt);
1194
1195 /* Fill in identity legacy mappings where no override */
1196 mp_config_acpi_legacy_irqs();
1197
1198 count =
1199 acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE, acpi_parse_nmi_src,
1200 nr_irqs);
1201 if (count < 0) {
1202 printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n");
1203 /* TBD: Cleanup to allow fallback to MPS */
1204 return count;
1205 }
1206
1207 return 0;
1208 }
1209 #else
1210 static inline int acpi_parse_madt_ioapic_entries(void)
1211 {
1212 return -1;
1213 }
1214 #endif /* !CONFIG_X86_IO_APIC */
1215
1216 static void __init early_acpi_process_madt(void)
1217 {
1218 #ifdef CONFIG_X86_LOCAL_APIC
1219 int error;
1220
1221 if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) {
1222
1223 /*
1224 * Parse MADT LAPIC entries
1225 */
1226 error = early_acpi_parse_madt_lapic_addr_ovr();
1227 if (!error) {
1228 acpi_lapic = 1;
1229 smp_found_config = 1;
1230 }
1231 if (error == -EINVAL) {
1232 /*
1233 * Dell Precision Workstation 410, 610 come here.
1234 */
1235 printk(KERN_ERR PREFIX
1236 "Invalid BIOS MADT, disabling ACPI\n");
1237 disable_acpi();
1238 }
1239 }
1240 #endif
1241 }
1242
1243 static void __init 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 = acpi_parse_madt_lapic_entries();
1254 if (!error) {
1255 acpi_lapic = 1;
1256
1257 /*
1258 * Parse MADT IO-APIC entries
1259 */
1260 error = acpi_parse_madt_ioapic_entries();
1261 if (!error) {
1262 acpi_irq_model = ACPI_IRQ_MODEL_IOAPIC;
1263 acpi_ioapic = 1;
1264
1265 smp_found_config = 1;
1266 }
1267 }
1268 if (error == -EINVAL) {
1269 /*
1270 * Dell Precision Workstation 410, 610 come here.
1271 */
1272 printk(KERN_ERR PREFIX
1273 "Invalid BIOS MADT, disabling ACPI\n");
1274 disable_acpi();
1275 }
1276 } else {
1277 /*
1278 * ACPI found no MADT, and so ACPI wants UP PIC mode.
1279 * In the event an MPS table was found, forget it.
1280 * Boot with "acpi=off" to use MPS on such a system.
1281 */
1282 if (smp_found_config) {
1283 printk(KERN_WARNING PREFIX
1284 "No APIC-table, disabling MPS\n");
1285 smp_found_config = 0;
1286 }
1287 }
1288
1289 /*
1290 * ACPI supports both logical (e.g. Hyper-Threading) and physical
1291 * processors, where MPS only supports physical.
1292 */
1293 if (acpi_lapic && acpi_ioapic)
1294 printk(KERN_INFO "Using ACPI (MADT) for SMP configuration "
1295 "information\n");
1296 else if (acpi_lapic)
1297 printk(KERN_INFO "Using ACPI for processor (LAPIC) "
1298 "configuration information\n");
1299 #endif
1300 return;
1301 }
1302
1303 static int __init disable_acpi_irq(const struct dmi_system_id *d)
1304 {
1305 if (!acpi_force) {
1306 printk(KERN_NOTICE "%s detected: force use of acpi=noirq\n",
1307 d->ident);
1308 acpi_noirq_set();
1309 }
1310 return 0;
1311 }
1312
1313 static int __init disable_acpi_pci(const struct dmi_system_id *d)
1314 {
1315 if (!acpi_force) {
1316 printk(KERN_NOTICE "%s detected: force use of pci=noacpi\n",
1317 d->ident);
1318 acpi_disable_pci();
1319 }
1320 return 0;
1321 }
1322
1323 static int __init dmi_disable_acpi(const struct dmi_system_id *d)
1324 {
1325 if (!acpi_force) {
1326 printk(KERN_NOTICE "%s detected: acpi off\n", d->ident);
1327 disable_acpi();
1328 } else {
1329 printk(KERN_NOTICE
1330 "Warning: DMI blacklist says broken, but acpi forced\n");
1331 }
1332 return 0;
1333 }
1334
1335 /*
1336 * Force ignoring BIOS IRQ0 pin2 override
1337 */
1338 static int __init dmi_ignore_irq0_timer_override(const struct dmi_system_id *d)
1339 {
1340 /*
1341 * The ati_ixp4x0_rev() early PCI quirk should have set
1342 * the acpi_skip_timer_override flag already:
1343 */
1344 if (!acpi_skip_timer_override) {
1345 WARN(1, KERN_ERR "ati_ixp4x0 quirk not complete.\n");
1346 pr_notice("%s detected: Ignoring BIOS IRQ0 pin2 override\n",
1347 d->ident);
1348 acpi_skip_timer_override = 1;
1349 }
1350 return 0;
1351 }
1352
1353 /*
1354 * If your system is blacklisted here, but you find that acpi=force
1355 * works for you, please contact linux-acpi@vger.kernel.org
1356 */
1357 static struct dmi_system_id __initdata acpi_dmi_table[] = {
1358 /*
1359 * Boxes that need ACPI disabled
1360 */
1361 {
1362 .callback = dmi_disable_acpi,
1363 .ident = "IBM Thinkpad",
1364 .matches = {
1365 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1366 DMI_MATCH(DMI_BOARD_NAME, "2629H1G"),
1367 },
1368 },
1369
1370 /*
1371 * Boxes that need ACPI PCI IRQ routing disabled
1372 */
1373 {
1374 .callback = disable_acpi_irq,
1375 .ident = "ASUS A7V",
1376 .matches = {
1377 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC"),
1378 DMI_MATCH(DMI_BOARD_NAME, "<A7V>"),
1379 /* newer BIOS, Revision 1011, does work */
1380 DMI_MATCH(DMI_BIOS_VERSION,
1381 "ASUS A7V ACPI BIOS Revision 1007"),
1382 },
1383 },
1384 {
1385 /*
1386 * Latest BIOS for IBM 600E (1.16) has bad pcinum
1387 * for LPC bridge, which is needed for the PCI
1388 * interrupt links to work. DSDT fix is in bug 5966.
1389 * 2645, 2646 model numbers are shared with 600/600E/600X
1390 */
1391 .callback = disable_acpi_irq,
1392 .ident = "IBM Thinkpad 600 Series 2645",
1393 .matches = {
1394 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1395 DMI_MATCH(DMI_BOARD_NAME, "2645"),
1396 },
1397 },
1398 {
1399 .callback = disable_acpi_irq,
1400 .ident = "IBM Thinkpad 600 Series 2646",
1401 .matches = {
1402 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1403 DMI_MATCH(DMI_BOARD_NAME, "2646"),
1404 },
1405 },
1406 /*
1407 * Boxes that need ACPI PCI IRQ routing and PCI scan disabled
1408 */
1409 { /* _BBN 0 bug */
1410 .callback = disable_acpi_pci,
1411 .ident = "ASUS PR-DLS",
1412 .matches = {
1413 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
1414 DMI_MATCH(DMI_BOARD_NAME, "PR-DLS"),
1415 DMI_MATCH(DMI_BIOS_VERSION,
1416 "ASUS PR-DLS ACPI BIOS Revision 1010"),
1417 DMI_MATCH(DMI_BIOS_DATE, "03/21/2003")
1418 },
1419 },
1420 {
1421 .callback = disable_acpi_pci,
1422 .ident = "Acer TravelMate 36x Laptop",
1423 .matches = {
1424 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
1425 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 360"),
1426 },
1427 },
1428 {}
1429 };
1430
1431 /* second table for DMI checks that should run after early-quirks */
1432 static struct dmi_system_id __initdata acpi_dmi_table_late[] = {
1433 /*
1434 * HP laptops which use a DSDT reporting as HP/SB400/10000,
1435 * which includes some code which overrides all temperature
1436 * trip points to 16C if the INTIN2 input of the I/O APIC
1437 * is enabled. This input is incorrectly designated the
1438 * ISA IRQ 0 via an interrupt source override even though
1439 * it is wired to the output of the master 8259A and INTIN0
1440 * is not connected at all. Force ignoring BIOS IRQ0 pin2
1441 * override in that cases.
1442 */
1443 {
1444 .callback = dmi_ignore_irq0_timer_override,
1445 .ident = "HP nx6115 laptop",
1446 .matches = {
1447 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1448 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6115"),
1449 },
1450 },
1451 {
1452 .callback = dmi_ignore_irq0_timer_override,
1453 .ident = "HP NX6125 laptop",
1454 .matches = {
1455 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1456 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6125"),
1457 },
1458 },
1459 {
1460 .callback = dmi_ignore_irq0_timer_override,
1461 .ident = "HP NX6325 laptop",
1462 .matches = {
1463 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1464 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6325"),
1465 },
1466 },
1467 {
1468 .callback = dmi_ignore_irq0_timer_override,
1469 .ident = "HP 6715b laptop",
1470 .matches = {
1471 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1472 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq 6715b"),
1473 },
1474 },
1475 {}
1476 };
1477
1478 /*
1479 * acpi_boot_table_init() and acpi_boot_init()
1480 * called from setup_arch(), always.
1481 * 1. checksums all tables
1482 * 2. enumerates lapics
1483 * 3. enumerates io-apics
1484 *
1485 * acpi_table_init() is separate to allow reading SRAT without
1486 * other side effects.
1487 *
1488 * side effects of acpi_boot_init:
1489 * acpi_lapic = 1 if LAPIC found
1490 * acpi_ioapic = 1 if IOAPIC found
1491 * if (acpi_lapic && acpi_ioapic) smp_found_config = 1;
1492 * if acpi_blacklisted() acpi_disabled = 1;
1493 * acpi_irq_model=...
1494 * ...
1495 */
1496
1497 void __init acpi_boot_table_init(void)
1498 {
1499 dmi_check_system(acpi_dmi_table);
1500
1501 /*
1502 * If acpi_disabled, bail out
1503 */
1504 if (acpi_disabled)
1505 return;
1506
1507 /*
1508 * Initialize the ACPI boot-time table parser.
1509 */
1510 if (acpi_table_init()) {
1511 disable_acpi();
1512 return;
1513 }
1514
1515 acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf);
1516
1517 /*
1518 * blacklist may disable ACPI entirely
1519 */
1520 if (acpi_blacklisted()) {
1521 if (acpi_force) {
1522 printk(KERN_WARNING PREFIX "acpi=force override\n");
1523 } else {
1524 printk(KERN_WARNING PREFIX "Disabling ACPI support\n");
1525 disable_acpi();
1526 return;
1527 }
1528 }
1529 }
1530
1531 int __init early_acpi_boot_init(void)
1532 {
1533 /*
1534 * If acpi_disabled, bail out
1535 */
1536 if (acpi_disabled)
1537 return 1;
1538
1539 /*
1540 * Process the Multiple APIC Description Table (MADT), if present
1541 */
1542 early_acpi_process_madt();
1543
1544 return 0;
1545 }
1546
1547 int __init acpi_boot_init(void)
1548 {
1549 /* those are executed after early-quirks are executed */
1550 dmi_check_system(acpi_dmi_table_late);
1551
1552 /*
1553 * If acpi_disabled, bail out
1554 */
1555 if (acpi_disabled)
1556 return 1;
1557
1558 acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf);
1559
1560 /*
1561 * set sci_int and PM timer address
1562 */
1563 acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt);
1564
1565 /*
1566 * Process the Multiple APIC Description Table (MADT), if present
1567 */
1568 acpi_process_madt();
1569
1570 acpi_table_parse(ACPI_SIG_HPET, acpi_parse_hpet);
1571
1572 if (!acpi_noirq)
1573 x86_init.pci.init = pci_acpi_init;
1574
1575 return 0;
1576 }
1577
1578 static int __init parse_acpi(char *arg)
1579 {
1580 if (!arg)
1581 return -EINVAL;
1582
1583 /* "acpi=off" disables both ACPI table parsing and interpreter */
1584 if (strcmp(arg, "off") == 0) {
1585 disable_acpi();
1586 }
1587 /* acpi=force to over-ride black-list */
1588 else if (strcmp(arg, "force") == 0) {
1589 acpi_force = 1;
1590 acpi_disabled = 0;
1591 }
1592 /* acpi=strict disables out-of-spec workarounds */
1593 else if (strcmp(arg, "strict") == 0) {
1594 acpi_strict = 1;
1595 }
1596 /* acpi=rsdt use RSDT instead of XSDT */
1597 else if (strcmp(arg, "rsdt") == 0) {
1598 acpi_rsdt_forced = 1;
1599 }
1600 /* "acpi=noirq" disables ACPI interrupt routing */
1601 else if (strcmp(arg, "noirq") == 0) {
1602 acpi_noirq_set();
1603 }
1604 /* "acpi=copy_dsdt" copys DSDT */
1605 else if (strcmp(arg, "copy_dsdt") == 0) {
1606 acpi_gbl_copy_dsdt_locally = 1;
1607 } else {
1608 /* Core will printk when we return error. */
1609 return -EINVAL;
1610 }
1611 return 0;
1612 }
1613 early_param("acpi", parse_acpi);
1614
1615 static int __init parse_pci(char *arg)
1616 {
1617 if (arg && strcmp(arg, "noacpi") == 0)
1618 acpi_disable_pci();
1619 return 0;
1620 }
1621 early_param("pci", parse_pci);
1622
1623 int __init acpi_mps_check(void)
1624 {
1625 #if defined(CONFIG_X86_LOCAL_APIC) && !defined(CONFIG_X86_MPPARSE)
1626 /* mptable code is not built-in*/
1627 if (acpi_disabled || acpi_noirq) {
1628 printk(KERN_WARNING "MPS support code is not built-in.\n"
1629 "Using acpi=off or acpi=noirq or pci=noacpi "
1630 "may have problem\n");
1631 return 1;
1632 }
1633 #endif
1634 return 0;
1635 }
1636
1637 #ifdef CONFIG_X86_IO_APIC
1638 static int __init parse_acpi_skip_timer_override(char *arg)
1639 {
1640 acpi_skip_timer_override = 1;
1641 return 0;
1642 }
1643 early_param("acpi_skip_timer_override", parse_acpi_skip_timer_override);
1644
1645 static int __init parse_acpi_use_timer_override(char *arg)
1646 {
1647 acpi_use_timer_override = 1;
1648 return 0;
1649 }
1650 early_param("acpi_use_timer_override", parse_acpi_use_timer_override);
1651 #endif /* CONFIG_X86_IO_APIC */
1652
1653 static int __init setup_acpi_sci(char *s)
1654 {
1655 if (!s)
1656 return -EINVAL;
1657 if (!strcmp(s, "edge"))
1658 acpi_sci_flags = ACPI_MADT_TRIGGER_EDGE |
1659 (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK);
1660 else if (!strcmp(s, "level"))
1661 acpi_sci_flags = ACPI_MADT_TRIGGER_LEVEL |
1662 (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK);
1663 else if (!strcmp(s, "high"))
1664 acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_HIGH |
1665 (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK);
1666 else if (!strcmp(s, "low"))
1667 acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_LOW |
1668 (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK);
1669 else
1670 return -EINVAL;
1671 return 0;
1672 }
1673 early_param("acpi_sci", setup_acpi_sci);
1674
1675 int __acpi_acquire_global_lock(unsigned int *lock)
1676 {
1677 unsigned int old, new, val;
1678 do {
1679 old = *lock;
1680 new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1));
1681 val = cmpxchg(lock, old, new);
1682 } while (unlikely (val != old));
1683 return (new < 3) ? -1 : 0;
1684 }
1685
1686 int __acpi_release_global_lock(unsigned int *lock)
1687 {
1688 unsigned int old, new, val;
1689 do {
1690 old = *lock;
1691 new = old & ~0x3;
1692 val = cmpxchg(lock, old, new);
1693 } while (unlikely (val != old));
1694 return old & 0x1;
1695 }
Tomato firmware and modifications.