?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
x86, irq: Kill io_apic_renumber_irq
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / arch / x86 / kernel / acpi / boot.c
blob9a5ed58f09dcdcc0a80e5e14ab9b09bb062d44a3
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 int acpi_ht __initdata = 1; /* enable HT */
67
68 int acpi_lapic;
69 int acpi_ioapic;
70 int acpi_strict;
71
72 u8 acpi_sci_flags __initdata;
73 int acpi_sci_override_gsi __initdata;
74 int acpi_skip_timer_override __initdata;
75 int acpi_use_timer_override __initdata;
76
77 #ifdef CONFIG_X86_LOCAL_APIC
78 static u64 acpi_lapic_addr __initdata = APIC_DEFAULT_PHYS_BASE;
79 #endif
80
81 #ifndef __HAVE_ARCH_CMPXCHG
82 #warning ACPI uses CMPXCHG, i486 and later hardware
83 #endif
84
85 /* --------------------------------------------------------------------------
86 Boot-time Configuration
87 -------------------------------------------------------------------------- */
88
89 /*
90 * The default interrupt routing model is PIC (8259). This gets
91 * overridden if IOAPICs are enumerated (below).
92 */
93 enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_PIC;
94
95
96 /*
97 * ISA irqs by default are the first 16 gsis but can be
98 * any gsi as specified by an interrupt source override.
99 */
100 static u32 isa_irq_to_gsi[NR_IRQS_LEGACY] __read_mostly = {
101 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15
102 };
103
104 static unsigned int gsi_to_irq(unsigned int gsi)
105 {
106 unsigned int irq = gsi + NR_IRQS_LEGACY;
107 unsigned int i;
108
109 for (i = 0; i < NR_IRQS_LEGACY; i++) {
110 if (isa_irq_to_gsi[i] == gsi) {
111 return i;
112 }
113 }
114
115 /* Provide an identity mapping of gsi == irq
116 * except on truly weird platforms that have
117 * non isa irqs in the first 16 gsis.
118 */
119 if (gsi >= NR_IRQS_LEGACY)
120 irq = gsi;
121 else
122 irq = gsi_end + 1 + gsi;
123
124 return irq;
125 }
126
127 static u32 irq_to_gsi(int irq)
128 {
129 unsigned int gsi;
130
131 if (irq < NR_IRQS_LEGACY)
132 gsi = isa_irq_to_gsi[irq];
133 else if (irq <= gsi_end)
134 gsi = irq;
135 else if (irq <= (gsi_end + NR_IRQS_LEGACY))
136 gsi = irq - gsi_end;
137 else
138 gsi = 0xffffffff;
139
140 return gsi;
141 }
142
143 /*
144 * Temporarily use the virtual area starting from FIX_IO_APIC_BASE_END,
145 * to map the target physical address. The problem is that set_fixmap()
146 * provides a single page, and it is possible that the page is not
147 * sufficient.
148 * By using this area, we can map up to MAX_IO_APICS pages temporarily,
149 * i.e. until the next __va_range() call.
150 *
151 * Important Safety Note: The fixed I/O APIC page numbers are *subtracted*
152 * from the fixed base. That's why we start at FIX_IO_APIC_BASE_END and
153 * count idx down while incrementing the phys address.
154 */
155 char *__init __acpi_map_table(unsigned long phys, unsigned long size)
156 {
157
158 if (!phys || !size)
159 return NULL;
160
161 return early_ioremap(phys, size);
162 }
163 void __init __acpi_unmap_table(char *map, unsigned long size)
164 {
165 if (!map || !size)
166 return;
167
168 early_iounmap(map, size);
169 }
170
171 #ifdef CONFIG_X86_LOCAL_APIC
172 static int __init acpi_parse_madt(struct acpi_table_header *table)
173 {
174 struct acpi_table_madt *madt = NULL;
175
176 if (!cpu_has_apic)
177 return -EINVAL;
178
179 madt = (struct acpi_table_madt *)table;
180 if (!madt) {
181 printk(KERN_WARNING PREFIX "Unable to map MADT\n");
182 return -ENODEV;
183 }
184
185 if (madt->address) {
186 acpi_lapic_addr = (u64) madt->address;
187
188 printk(KERN_DEBUG PREFIX "Local APIC address 0x%08x\n",
189 madt->address);
190 }
191
192 default_acpi_madt_oem_check(madt->header.oem_id,
193 madt->header.oem_table_id);
194
195 return 0;
196 }
197
198 static void __cpuinit acpi_register_lapic(int id, u8 enabled)
199 {
200 unsigned int ver = 0;
201
202 if (!enabled) {
203 ++disabled_cpus;
204 return;
205 }
206
207 if (boot_cpu_physical_apicid != -1U)
208 ver = apic_version[boot_cpu_physical_apicid];
209
210 generic_processor_info(id, ver);
211 }
212
213 static int __init
214 acpi_parse_x2apic(struct acpi_subtable_header *header, const unsigned long end)
215 {
216 struct acpi_madt_local_x2apic *processor = NULL;
217
218 processor = (struct acpi_madt_local_x2apic *)header;
219
220 if (BAD_MADT_ENTRY(processor, end))
221 return -EINVAL;
222
223 acpi_table_print_madt_entry(header);
224
225 #ifdef CONFIG_X86_X2APIC
226 /*
227 * We need to register disabled CPU as well to permit
228 * counting disabled CPUs. This allows us to size
229 * cpus_possible_map more accurately, to permit
230 * to not preallocating memory for all NR_CPUS
231 * when we use CPU hotplug.
232 */
233 acpi_register_lapic(processor->local_apic_id, /* APIC ID */
234 processor->lapic_flags & ACPI_MADT_ENABLED);
235 #else
236 printk(KERN_WARNING PREFIX "x2apic entry ignored\n");
237 #endif
238
239 return 0;
240 }
241
242 static int __init
243 acpi_parse_lapic(struct acpi_subtable_header * header, const unsigned long end)
244 {
245 struct acpi_madt_local_apic *processor = NULL;
246
247 processor = (struct acpi_madt_local_apic *)header;
248
249 if (BAD_MADT_ENTRY(processor, end))
250 return -EINVAL;
251
252 acpi_table_print_madt_entry(header);
253
254 /*
255 * We need to register disabled CPU as well to permit
256 * counting disabled CPUs. This allows us to size
257 * cpus_possible_map more accurately, to permit
258 * to not preallocating memory for all NR_CPUS
259 * when we use CPU hotplug.
260 */
261 acpi_register_lapic(processor->id, /* APIC ID */
262 processor->lapic_flags & ACPI_MADT_ENABLED);
263
264 return 0;
265 }
266
267 static int __init
268 acpi_parse_sapic(struct acpi_subtable_header *header, const unsigned long end)
269 {
270 struct acpi_madt_local_sapic *processor = NULL;
271
272 processor = (struct acpi_madt_local_sapic *)header;
273
274 if (BAD_MADT_ENTRY(processor, end))
275 return -EINVAL;
276
277 acpi_table_print_madt_entry(header);
278
279 acpi_register_lapic((processor->id << 8) | processor->eid,/* APIC ID */
280 processor->lapic_flags & ACPI_MADT_ENABLED);
281
282 return 0;
283 }
284
285 static int __init
286 acpi_parse_lapic_addr_ovr(struct acpi_subtable_header * header,
287 const unsigned long end)
288 {
289 struct acpi_madt_local_apic_override *lapic_addr_ovr = NULL;
290
291 lapic_addr_ovr = (struct acpi_madt_local_apic_override *)header;
292
293 if (BAD_MADT_ENTRY(lapic_addr_ovr, end))
294 return -EINVAL;
295
296 acpi_lapic_addr = lapic_addr_ovr->address;
297
298 return 0;
299 }
300
301 static int __init
302 acpi_parse_x2apic_nmi(struct acpi_subtable_header *header,
303 const unsigned long end)
304 {
305 struct acpi_madt_local_x2apic_nmi *x2apic_nmi = NULL;
306
307 x2apic_nmi = (struct acpi_madt_local_x2apic_nmi *)header;
308
309 if (BAD_MADT_ENTRY(x2apic_nmi, end))
310 return -EINVAL;
311
312 acpi_table_print_madt_entry(header);
313
314 if (x2apic_nmi->lint != 1)
315 printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n");
316
317 return 0;
318 }
319
320 static int __init
321 acpi_parse_lapic_nmi(struct acpi_subtable_header * header, const unsigned long end)
322 {
323 struct acpi_madt_local_apic_nmi *lapic_nmi = NULL;
324
325 lapic_nmi = (struct acpi_madt_local_apic_nmi *)header;
326
327 if (BAD_MADT_ENTRY(lapic_nmi, end))
328 return -EINVAL;
329
330 acpi_table_print_madt_entry(header);
331
332 if (lapic_nmi->lint != 1)
333 printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n");
334
335 return 0;
336 }
337
338 #endif /*CONFIG_X86_LOCAL_APIC */
339
340 #ifdef CONFIG_X86_IO_APIC
341
342 static int __init
343 acpi_parse_ioapic(struct acpi_subtable_header * header, const unsigned long end)
344 {
345 struct acpi_madt_io_apic *ioapic = NULL;
346
347 ioapic = (struct acpi_madt_io_apic *)header;
348
349 if (BAD_MADT_ENTRY(ioapic, end))
350 return -EINVAL;
351
352 acpi_table_print_madt_entry(header);
353
354 mp_register_ioapic(ioapic->id,
355 ioapic->address, ioapic->global_irq_base);
356
357 return 0;
358 }
359
360 /*
361 * Parse Interrupt Source Override for the ACPI SCI
362 */
363 static void __init acpi_sci_ioapic_setup(u8 bus_irq, u16 polarity, u16 trigger, u32 gsi)
364 {
365 if (trigger == 0) /* compatible SCI trigger is level */
366 trigger = 3;
367
368 if (polarity == 0) /* compatible SCI polarity is low */
369 polarity = 3;
370
371 /* Command-line over-ride via acpi_sci= */
372 if (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK)
373 trigger = (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) >> 2;
374
375 if (acpi_sci_flags & ACPI_MADT_POLARITY_MASK)
376 polarity = acpi_sci_flags & ACPI_MADT_POLARITY_MASK;
377
378 /*
379 * mp_config_acpi_legacy_irqs() already setup IRQs < 16
380 * If GSI is < 16, this will update its flags,
381 * else it will create a new mp_irqs[] entry.
382 */
383 mp_override_legacy_irq(bus_irq, polarity, trigger, gsi);
384
385 /*
386 * stash over-ride to indicate we've been here
387 * and for later update of acpi_gbl_FADT
388 */
389 acpi_sci_override_gsi = gsi;
390 return;
391 }
392
393 static int __init
394 acpi_parse_int_src_ovr(struct acpi_subtable_header * header,
395 const unsigned long end)
396 {
397 struct acpi_madt_interrupt_override *intsrc = NULL;
398
399 intsrc = (struct acpi_madt_interrupt_override *)header;
400
401 if (BAD_MADT_ENTRY(intsrc, end))
402 return -EINVAL;
403
404 acpi_table_print_madt_entry(header);
405
406 if (intsrc->source_irq == acpi_gbl_FADT.sci_interrupt) {
407 acpi_sci_ioapic_setup(intsrc->source_irq,
408 intsrc->inti_flags & ACPI_MADT_POLARITY_MASK,
409 (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2,
410 intsrc->global_irq);
411 return 0;
412 }
413
414 if (acpi_skip_timer_override &&
415 intsrc->source_irq == 0 && intsrc->global_irq == 2) {
416 printk(PREFIX "BIOS IRQ0 pin2 override ignored.\n");
417 return 0;
418 }
419
420 mp_override_legacy_irq(intsrc->source_irq,
421 intsrc->inti_flags & ACPI_MADT_POLARITY_MASK,
422 (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2,
423 intsrc->global_irq);
424
425 return 0;
426 }
427
428 static int __init
429 acpi_parse_nmi_src(struct acpi_subtable_header * header, const unsigned long end)
430 {
431 struct acpi_madt_nmi_source *nmi_src = NULL;
432
433 nmi_src = (struct acpi_madt_nmi_source *)header;
434
435 if (BAD_MADT_ENTRY(nmi_src, end))
436 return -EINVAL;
437
438 acpi_table_print_madt_entry(header);
439
440 /* TBD: Support nimsrc entries? */
441
442 return 0;
443 }
444
445 #endif /* CONFIG_X86_IO_APIC */
446
447 /*
448 * acpi_pic_sci_set_trigger()
449 *
450 * use ELCR to set PIC-mode trigger type for SCI
451 *
452 * If a PIC-mode SCI is not recognized or gives spurious IRQ7's
453 * it may require Edge Trigger -- use "acpi_sci=edge"
454 *
455 * Port 0x4d0-4d1 are ECLR1 and ECLR2, the Edge/Level Control Registers
456 * for the 8259 PIC. bit[n] = 1 means irq[n] is Level, otherwise Edge.
457 * ECLR1 is IRQs 0-7 (IRQ 0, 1, 2 must be 0)
458 * ECLR2 is IRQs 8-15 (IRQ 8, 13 must be 0)
459 */
460
461 void __init acpi_pic_sci_set_trigger(unsigned int irq, u16 trigger)
462 {
463 unsigned int mask = 1 << irq;
464 unsigned int old, new;
465
466 /* Real old ELCR mask */
467 old = inb(0x4d0) | (inb(0x4d1) << 8);
468
469 /*
470 * If we use ACPI to set PCI IRQs, then we should clear ELCR
471 * since we will set it correctly as we enable the PCI irq
472 * routing.
473 */
474 new = acpi_noirq ? old : 0;
475
476 /*
477 * Update SCI information in the ELCR, it isn't in the PCI
478 * routing tables..
479 */
480 switch (trigger) {
481 case 1: /* Edge - clear */
482 new &= ~mask;
483 break;
484 case 3: /* Level - set */
485 new |= mask;
486 break;
487 }
488
489 if (old == new)
490 return;
491
492 printk(PREFIX "setting ELCR to %04x (from %04x)\n", new, old);
493 outb(new, 0x4d0);
494 outb(new >> 8, 0x4d1);
495 }
496
497 int acpi_gsi_to_irq(u32 gsi, unsigned int *irq)
498 {
499 *irq = gsi_to_irq(gsi);
500
501 #ifdef CONFIG_X86_IO_APIC
502 if (acpi_irq_model == ACPI_IRQ_MODEL_IOAPIC)
503 setup_IO_APIC_irq_extra(gsi);
504 #endif
505
506 return 0;
507 }
508
509 int acpi_isa_irq_to_gsi(unsigned isa_irq, u32 *gsi)
510 {
511 if (isa_irq >= 16)
512 return -1;
513 *gsi = irq_to_gsi(isa_irq);
514 return 0;
515 }
516
517 /*
518 * success: return IRQ number (>=0)
519 * failure: return < 0
520 */
521 int acpi_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity)
522 {
523 unsigned int irq;
524 unsigned int plat_gsi = gsi;
525
526 #ifdef CONFIG_PCI
527 /*
528 * Make sure all (legacy) PCI IRQs are set as level-triggered.
529 */
530 if (acpi_irq_model == ACPI_IRQ_MODEL_PIC) {
531 if (trigger == ACPI_LEVEL_SENSITIVE)
532 eisa_set_level_irq(gsi);
533 }
534 #endif
535
536 #ifdef CONFIG_X86_IO_APIC
537 if (acpi_irq_model == ACPI_IRQ_MODEL_IOAPIC) {
538 plat_gsi = mp_register_gsi(dev, gsi, trigger, polarity);
539 }
540 #endif
541 irq = gsi_to_irq(plat_gsi);
542
543 return irq;
544 }
545
546 /*
547 * ACPI based hotplug support for CPU
548 */
549 #ifdef CONFIG_ACPI_HOTPLUG_CPU
550 #include <acpi/processor.h>
551
552 static void acpi_map_cpu2node(acpi_handle handle, int cpu, int physid)
553 {
554 #ifdef CONFIG_ACPI_NUMA
555 int nid;
556
557 nid = acpi_get_node(handle);
558 if (nid == -1 || !node_online(nid))
559 return;
560 #ifdef CONFIG_X86_64
561 apicid_to_node[physid] = nid;
562 numa_set_node(cpu, nid);
563 #else /* CONFIG_X86_32 */
564 apicid_2_node[physid] = nid;
565 cpu_to_node_map[cpu] = nid;
566 #endif
567
568 #endif
569 }
570
571 static int __cpuinit _acpi_map_lsapic(acpi_handle handle, int *pcpu)
572 {
573 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
574 union acpi_object *obj;
575 struct acpi_madt_local_apic *lapic;
576 cpumask_var_t tmp_map, new_map;
577 u8 physid;
578 int cpu;
579 int retval = -ENOMEM;
580
581 if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer)))
582 return -EINVAL;
583
584 if (!buffer.length || !buffer.pointer)
585 return -EINVAL;
586
587 obj = buffer.pointer;
588 if (obj->type != ACPI_TYPE_BUFFER ||
589 obj->buffer.length < sizeof(*lapic)) {
590 kfree(buffer.pointer);
591 return -EINVAL;
592 }
593
594 lapic = (struct acpi_madt_local_apic *)obj->buffer.pointer;
595
596 if (lapic->header.type != ACPI_MADT_TYPE_LOCAL_APIC ||
597 !(lapic->lapic_flags & ACPI_MADT_ENABLED)) {
598 kfree(buffer.pointer);
599 return -EINVAL;
600 }
601
602 physid = lapic->id;
603
604 kfree(buffer.pointer);
605 buffer.length = ACPI_ALLOCATE_BUFFER;
606 buffer.pointer = NULL;
607
608 if (!alloc_cpumask_var(&tmp_map, GFP_KERNEL))
609 goto out;
610
611 if (!alloc_cpumask_var(&new_map, GFP_KERNEL))
612 goto free_tmp_map;
613
614 cpumask_copy(tmp_map, cpu_present_mask);
615 acpi_register_lapic(physid, lapic->lapic_flags & ACPI_MADT_ENABLED);
616
617 /*
618 * If mp_register_lapic successfully generates a new logical cpu
619 * number, then the following will get us exactly what was mapped
620 */
621 cpumask_andnot(new_map, cpu_present_mask, tmp_map);
622 if (cpumask_empty(new_map)) {
623 printk ("Unable to map lapic to logical cpu number\n");
624 retval = -EINVAL;
625 goto free_new_map;
626 }
627
628 acpi_processor_set_pdc(handle);
629
630 cpu = cpumask_first(new_map);
631 acpi_map_cpu2node(handle, cpu, physid);
632
633 *pcpu = cpu;
634 retval = 0;
635
636 free_new_map:
637 free_cpumask_var(new_map);
638 free_tmp_map:
639 free_cpumask_var(tmp_map);
640 out:
641 return retval;
642 }
643
644 /* wrapper to silence section mismatch warning */
645 int __ref acpi_map_lsapic(acpi_handle handle, int *pcpu)
646 {
647 return _acpi_map_lsapic(handle, pcpu);
648 }
649 EXPORT_SYMBOL(acpi_map_lsapic);
650
651 int acpi_unmap_lsapic(int cpu)
652 {
653 per_cpu(x86_cpu_to_apicid, cpu) = -1;
654 set_cpu_present(cpu, false);
655 num_processors--;
656
657 return (0);
658 }
659
660 EXPORT_SYMBOL(acpi_unmap_lsapic);
661 #endif /* CONFIG_ACPI_HOTPLUG_CPU */
662
663 int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base)
664 {
665 /* TBD */
666 return -EINVAL;
667 }
668
669 EXPORT_SYMBOL(acpi_register_ioapic);
670
671 int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base)
672 {
673 /* TBD */
674 return -EINVAL;
675 }
676
677 EXPORT_SYMBOL(acpi_unregister_ioapic);
678
679 static int __init acpi_parse_sbf(struct acpi_table_header *table)
680 {
681 struct acpi_table_boot *sb;
682
683 sb = (struct acpi_table_boot *)table;
684 if (!sb) {
685 printk(KERN_WARNING PREFIX "Unable to map SBF\n");
686 return -ENODEV;
687 }
688
689 sbf_port = sb->cmos_index; /* Save CMOS port */
690
691 return 0;
692 }
693
694 #ifdef CONFIG_HPET_TIMER
695 #include <asm/hpet.h>
696
697 static struct __initdata resource *hpet_res;
698
699 static int __init acpi_parse_hpet(struct acpi_table_header *table)
700 {
701 struct acpi_table_hpet *hpet_tbl;
702
703 hpet_tbl = (struct acpi_table_hpet *)table;
704 if (!hpet_tbl) {
705 printk(KERN_WARNING PREFIX "Unable to map HPET\n");
706 return -ENODEV;
707 }
708
709 if (hpet_tbl->address.space_id != ACPI_SPACE_MEM) {
710 printk(KERN_WARNING PREFIX "HPET timers must be located in "
711 "memory.\n");
712 return -1;
713 }
714
715 hpet_address = hpet_tbl->address.address;
716 hpet_blockid = hpet_tbl->sequence;
717
718 /*
719 * Some broken BIOSes advertise HPET at 0x0. We really do not
720 * want to allocate a resource there.
721 */
722 if (!hpet_address) {
723 printk(KERN_WARNING PREFIX
724 "HPET id: %#x base: %#lx is invalid\n",
725 hpet_tbl->id, hpet_address);
726 return 0;
727 }
728 #ifdef CONFIG_X86_64
729 /*
730 * Some even more broken BIOSes advertise HPET at
731 * 0xfed0000000000000 instead of 0xfed00000. Fix it up and add
732 * some noise:
733 */
734 if (hpet_address == 0xfed0000000000000UL) {
735 if (!hpet_force_user) {
736 printk(KERN_WARNING PREFIX "HPET id: %#x "
737 "base: 0xfed0000000000000 is bogus\n "
738 "try hpet=force on the kernel command line to "
739 "fix it up to 0xfed00000.\n", hpet_tbl->id);
740 hpet_address = 0;
741 return 0;
742 }
743 printk(KERN_WARNING PREFIX
744 "HPET id: %#x base: 0xfed0000000000000 fixed up "
745 "to 0xfed00000.\n", hpet_tbl->id);
746 hpet_address >>= 32;
747 }
748 #endif
749 printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n",
750 hpet_tbl->id, hpet_address);
751
752 /*
753 * Allocate and initialize the HPET firmware resource for adding into
754 * the resource tree during the lateinit timeframe.
755 */
756 #define HPET_RESOURCE_NAME_SIZE 9
757 hpet_res = alloc_bootmem(sizeof(*hpet_res) + HPET_RESOURCE_NAME_SIZE);
758
759 hpet_res->name = (void *)&hpet_res[1];
760 hpet_res->flags = IORESOURCE_MEM;
761 snprintf((char *)hpet_res->name, HPET_RESOURCE_NAME_SIZE, "HPET %u",
762 hpet_tbl->sequence);
763
764 hpet_res->start = hpet_address;
765 hpet_res->end = hpet_address + (1 * 1024) - 1;
766
767 return 0;
768 }
769
770 /*
771 * hpet_insert_resource inserts the HPET resources used into the resource
772 * tree.
773 */
774 static __init int hpet_insert_resource(void)
775 {
776 if (!hpet_res)
777 return 1;
778
779 return insert_resource(&iomem_resource, hpet_res);
780 }
781
782 late_initcall(hpet_insert_resource);
783
784 #else
785 #define acpi_parse_hpet NULL
786 #endif
787
788 static int __init acpi_parse_fadt(struct acpi_table_header *table)
789 {
790
791 #ifdef CONFIG_X86_PM_TIMER
792 /* detect the location of the ACPI PM Timer */
793 if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID) {
794 /* FADT rev. 2 */
795 if (acpi_gbl_FADT.xpm_timer_block.space_id !=
796 ACPI_ADR_SPACE_SYSTEM_IO)
797 return 0;
798
799 pmtmr_ioport = acpi_gbl_FADT.xpm_timer_block.address;
800 /*
801 * "X" fields are optional extensions to the original V1.0
802 * fields, so we must selectively expand V1.0 fields if the
803 * corresponding X field is zero.
804 */
805 if (!pmtmr_ioport)
806 pmtmr_ioport = acpi_gbl_FADT.pm_timer_block;
807 } else {
808 /* FADT rev. 1 */
809 pmtmr_ioport = acpi_gbl_FADT.pm_timer_block;
810 }
811 if (pmtmr_ioport)
812 printk(KERN_INFO PREFIX "PM-Timer IO Port: %#x\n",
813 pmtmr_ioport);
814 #endif
815 return 0;
816 }
817
818 #ifdef CONFIG_X86_LOCAL_APIC
819 /*
820 * Parse LAPIC entries in MADT
821 * returns 0 on success, < 0 on error
822 */
823
824 static void __init acpi_register_lapic_address(unsigned long address)
825 {
826 mp_lapic_addr = address;
827
828 set_fixmap_nocache(FIX_APIC_BASE, address);
829 if (boot_cpu_physical_apicid == -1U) {
830 boot_cpu_physical_apicid = read_apic_id();
831 apic_version[boot_cpu_physical_apicid] =
832 GET_APIC_VERSION(apic_read(APIC_LVR));
833 }
834 }
835
836 static int __init early_acpi_parse_madt_lapic_addr_ovr(void)
837 {
838 int count;
839
840 if (!cpu_has_apic)
841 return -ENODEV;
842
843 /*
844 * Note that the LAPIC address is obtained from the MADT (32-bit value)
845 * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value).
846 */
847
848 count =
849 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE,
850 acpi_parse_lapic_addr_ovr, 0);
851 if (count < 0) {
852 printk(KERN_ERR PREFIX
853 "Error parsing LAPIC address override entry\n");
854 return count;
855 }
856
857 acpi_register_lapic_address(acpi_lapic_addr);
858
859 return count;
860 }
861
862 static int __init acpi_parse_madt_lapic_entries(void)
863 {
864 int count;
865 int x2count = 0;
866
867 if (!cpu_has_apic)
868 return -ENODEV;
869
870 /*
871 * Note that the LAPIC address is obtained from the MADT (32-bit value)
872 * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value).
873 */
874
875 count =
876 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE,
877 acpi_parse_lapic_addr_ovr, 0);
878 if (count < 0) {
879 printk(KERN_ERR PREFIX
880 "Error parsing LAPIC address override entry\n");
881 return count;
882 }
883
884 acpi_register_lapic_address(acpi_lapic_addr);
885
886 count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_SAPIC,
887 acpi_parse_sapic, MAX_APICS);
888
889 if (!count) {
890 x2count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC,
891 acpi_parse_x2apic, MAX_APICS);
892 count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC,
893 acpi_parse_lapic, MAX_APICS);
894 }
895 if (!count && !x2count) {
896 printk(KERN_ERR PREFIX "No LAPIC entries present\n");
897 /* TBD: Cleanup to allow fallback to MPS */
898 return -ENODEV;
899 } else if (count < 0 || x2count < 0) {
900 printk(KERN_ERR PREFIX "Error parsing LAPIC entry\n");
901 /* TBD: Cleanup to allow fallback to MPS */
902 return count;
903 }
904
905 x2count =
906 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC_NMI,
907 acpi_parse_x2apic_nmi, 0);
908 count =
909 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI, acpi_parse_lapic_nmi, 0);
910 if (count < 0 || x2count < 0) {
911 printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n");
912 /* TBD: Cleanup to allow fallback to MPS */
913 return count;
914 }
915 return 0;
916 }
917 #endif /* CONFIG_X86_LOCAL_APIC */
918
919 #ifdef CONFIG_X86_IO_APIC
920 #define MP_ISA_BUS 0
921
922 #ifdef CONFIG_X86_ES7000
923 extern int es7000_plat;
924 #endif
925
926 static void assign_to_mp_irq(struct mpc_intsrc *m,
927 struct mpc_intsrc *mp_irq)
928 {
929 memcpy(mp_irq, m, sizeof(struct mpc_intsrc));
930 }
931
932 static int mp_irq_cmp(struct mpc_intsrc *mp_irq,
933 struct mpc_intsrc *m)
934 {
935 return memcmp(mp_irq, m, sizeof(struct mpc_intsrc));
936 }
937
938 static void save_mp_irq(struct mpc_intsrc *m)
939 {
940 int i;
941
942 for (i = 0; i < mp_irq_entries; i++) {
943 if (!mp_irq_cmp(&mp_irqs[i], m))
944 return;
945 }
946
947 assign_to_mp_irq(m, &mp_irqs[mp_irq_entries]);
948 if (++mp_irq_entries == MAX_IRQ_SOURCES)
949 panic("Max # of irq sources exceeded!!\n");
950 }
951
952 void __init mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger, u32 gsi)
953 {
954 int ioapic;
955 int pin;
956 struct mpc_intsrc mp_irq;
957
958 /*
959 * Convert 'gsi' to 'ioapic.pin'.
960 */
961 ioapic = mp_find_ioapic(gsi);
962 if (ioapic < 0)
963 return;
964 pin = mp_find_ioapic_pin(ioapic, gsi);
965
966 /*
967 * TBD: This check is for faulty timer entries, where the override
968 * erroneously sets the trigger to level, resulting in a HUGE
969 * increase of timer interrupts!
970 */
971 if ((bus_irq == 0) && (trigger == 3))
972 trigger = 1;
973
974 mp_irq.type = MP_INTSRC;
975 mp_irq.irqtype = mp_INT;
976 mp_irq.irqflag = (trigger << 2) | polarity;
977 mp_irq.srcbus = MP_ISA_BUS;
978 mp_irq.srcbusirq = bus_irq; /* IRQ */
979 mp_irq.dstapic = mp_ioapics[ioapic].apicid; /* APIC ID */
980 mp_irq.dstirq = pin; /* INTIN# */
981
982 save_mp_irq(&mp_irq);
983
984 isa_irq_to_gsi[bus_irq] = gsi;
985 }
986
987 void __init mp_config_acpi_legacy_irqs(void)
988 {
989 int i;
990 struct mpc_intsrc mp_irq;
991
992 #if defined (CONFIG_MCA) || defined (CONFIG_EISA)
993 /*
994 * Fabricate the legacy ISA bus (bus #31).
995 */
996 mp_bus_id_to_type[MP_ISA_BUS] = MP_BUS_ISA;
997 #endif
998 set_bit(MP_ISA_BUS, mp_bus_not_pci);
999 pr_debug("Bus #%d is ISA\n", MP_ISA_BUS);
1000
1001 #ifdef CONFIG_X86_ES7000
1002 /*
1003 * Older generations of ES7000 have no legacy identity mappings
1004 */
1005 if (es7000_plat == 1)
1006 return;
1007 #endif
1008
1009 /*
1010 * Use the default configuration for the IRQs 0-15. Unless
1011 * overridden by (MADT) interrupt source override entries.
1012 */
1013 for (i = 0; i < 16; i++) {
1014 int ioapic, pin;
1015 unsigned int dstapic;
1016 int idx;
1017 u32 gsi;
1018
1019 /* Locate the gsi that irq i maps to. */
1020 if (acpi_isa_irq_to_gsi(i, &gsi))
1021 continue;
1022
1023 /*
1024 * Locate the IOAPIC that manages the ISA IRQ.
1025 */
1026 ioapic = mp_find_ioapic(gsi);
1027 if (ioapic < 0)
1028 continue;
1029 pin = mp_find_ioapic_pin(ioapic, gsi);
1030 dstapic = mp_ioapics[ioapic].apicid;
1031
1032 for (idx = 0; idx < mp_irq_entries; idx++) {
1033 struct mpc_intsrc *irq = mp_irqs + idx;
1034
1035 /* Do we already have a mapping for this ISA IRQ? */
1036 if (irq->srcbus == MP_ISA_BUS && irq->srcbusirq == i)
1037 break;
1038
1039 /* Do we already have a mapping for this IOAPIC pin */
1040 if (irq->dstapic == dstapic && irq->dstirq == pin)
1041 break;
1042 }
1043
1044 if (idx != mp_irq_entries) {
1045 printk(KERN_DEBUG "ACPI: IRQ%d used by override.\n", i);
1046 continue; /* IRQ already used */
1047 }
1048
1049 mp_irq.type = MP_INTSRC;
1050 mp_irq.irqflag = 0; /* Conforming */
1051 mp_irq.srcbus = MP_ISA_BUS;
1052 mp_irq.dstapic = dstapic;
1053 mp_irq.irqtype = mp_INT;
1054 mp_irq.srcbusirq = i; /* Identity mapped */
1055 mp_irq.dstirq = pin;
1056
1057 save_mp_irq(&mp_irq);
1058 }
1059 }
1060
1061 static int mp_config_acpi_gsi(struct device *dev, u32 gsi, int trigger,
1062 int polarity)
1063 {
1064 #ifdef CONFIG_X86_MPPARSE
1065 struct mpc_intsrc mp_irq;
1066 struct pci_dev *pdev;
1067 unsigned char number;
1068 unsigned int devfn;
1069 int ioapic;
1070 u8 pin;
1071
1072 if (!acpi_ioapic)
1073 return 0;
1074 if (!dev)
1075 return 0;
1076 if (dev->bus != &pci_bus_type)
1077 return 0;
1078
1079 pdev = to_pci_dev(dev);
1080 number = pdev->bus->number;
1081 devfn = pdev->devfn;
1082 pin = pdev->pin;
1083 /* print the entry should happen on mptable identically */
1084 mp_irq.type = MP_INTSRC;
1085 mp_irq.irqtype = mp_INT;
1086 mp_irq.irqflag = (trigger == ACPI_EDGE_SENSITIVE ? 4 : 0x0c) |
1087 (polarity == ACPI_ACTIVE_HIGH ? 1 : 3);
1088 mp_irq.srcbus = number;
1089 mp_irq.srcbusirq = (((devfn >> 3) & 0x1f) << 2) | ((pin - 1) & 3);
1090 ioapic = mp_find_ioapic(gsi);
1091 mp_irq.dstapic = mp_ioapics[ioapic].apicid;
1092 mp_irq.dstirq = mp_find_ioapic_pin(ioapic, gsi);
1093
1094 save_mp_irq(&mp_irq);
1095 #endif
1096 return 0;
1097 }
1098
1099 int mp_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity)
1100 {
1101 int ioapic;
1102 int ioapic_pin;
1103 struct io_apic_irq_attr irq_attr;
1104
1105 if (acpi_irq_model != ACPI_IRQ_MODEL_IOAPIC)
1106 return gsi;
1107
1108 /* Don't set up the ACPI SCI because it's already set up */
1109 if (acpi_gbl_FADT.sci_interrupt == gsi)
1110 return gsi;
1111
1112 ioapic = mp_find_ioapic(gsi);
1113 if (ioapic < 0) {
1114 printk(KERN_WARNING "No IOAPIC for GSI %u\n", gsi);
1115 return gsi;
1116 }
1117
1118 ioapic_pin = mp_find_ioapic_pin(ioapic, gsi);
1119
1120 if (ioapic_pin > MP_MAX_IOAPIC_PIN) {
1121 printk(KERN_ERR "Invalid reference to IOAPIC pin "
1122 "%d-%d\n", mp_ioapics[ioapic].apicid,
1123 ioapic_pin);
1124 return gsi;
1125 }
1126
1127 if (enable_update_mptable)
1128 mp_config_acpi_gsi(dev, gsi, trigger, polarity);
1129
1130 set_io_apic_irq_attr(&irq_attr, ioapic, ioapic_pin,
1131 trigger == ACPI_EDGE_SENSITIVE ? 0 : 1,
1132 polarity == ACPI_ACTIVE_HIGH ? 0 : 1);
1133 io_apic_set_pci_routing(dev, gsi_to_irq(gsi), &irq_attr);
1134
1135 return gsi;
1136 }
1137
1138 /*
1139 * Parse IOAPIC related entries in MADT
1140 * returns 0 on success, < 0 on error
1141 */
1142 static int __init acpi_parse_madt_ioapic_entries(void)
1143 {
1144 int count;
1145
1146 /*
1147 * ACPI interpreter is required to complete interrupt setup,
1148 * so if it is off, don't enumerate the io-apics with ACPI.
1149 * If MPS is present, it will handle them,
1150 * otherwise the system will stay in PIC mode
1151 */
1152 if (acpi_disabled || acpi_noirq)
1153 return -ENODEV;
1154
1155 if (!cpu_has_apic)
1156 return -ENODEV;
1157
1158 /*
1159 * if "noapic" boot option, don't look for IO-APICs
1160 */
1161 if (skip_ioapic_setup) {
1162 printk(KERN_INFO PREFIX "Skipping IOAPIC probe "
1163 "due to 'noapic' option.\n");
1164 return -ENODEV;
1165 }
1166
1167 count =
1168 acpi_table_parse_madt(ACPI_MADT_TYPE_IO_APIC, acpi_parse_ioapic,
1169 MAX_IO_APICS);
1170 if (!count) {
1171 printk(KERN_ERR PREFIX "No IOAPIC entries present\n");
1172 return -ENODEV;
1173 } else if (count < 0) {
1174 printk(KERN_ERR PREFIX "Error parsing IOAPIC entry\n");
1175 return count;
1176 }
1177
1178 count =
1179 acpi_table_parse_madt(ACPI_MADT_TYPE_INTERRUPT_OVERRIDE, acpi_parse_int_src_ovr,
1180 nr_irqs);
1181 if (count < 0) {
1182 printk(KERN_ERR PREFIX
1183 "Error parsing interrupt source overrides entry\n");
1184 /* TBD: Cleanup to allow fallback to MPS */
1185 return count;
1186 }
1187
1188 /*
1189 * If BIOS did not supply an INT_SRC_OVR for the SCI
1190 * pretend we got one so we can set the SCI flags.
1191 */
1192 if (!acpi_sci_override_gsi)
1193 acpi_sci_ioapic_setup(acpi_gbl_FADT.sci_interrupt, 0, 0,
1194 acpi_gbl_FADT.sci_interrupt);
1195
1196 /* Fill in identity legacy mappings where no override */
1197 mp_config_acpi_legacy_irqs();
1198
1199 count =
1200 acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE, acpi_parse_nmi_src,
1201 nr_irqs);
1202 if (count < 0) {
1203 printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n");
1204 /* TBD: Cleanup to allow fallback to MPS */
1205 return count;
1206 }
1207
1208 return 0;
1209 }
1210 #else
1211 static inline int acpi_parse_madt_ioapic_entries(void)
1212 {
1213 return -1;
1214 }
1215 #endif /* !CONFIG_X86_IO_APIC */
1216
1217 static void __init early_acpi_process_madt(void)
1218 {
1219 #ifdef CONFIG_X86_LOCAL_APIC
1220 int error;
1221
1222 if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) {
1223
1224 /*
1225 * Parse MADT LAPIC entries
1226 */
1227 error = early_acpi_parse_madt_lapic_addr_ovr();
1228 if (!error) {
1229 acpi_lapic = 1;
1230 smp_found_config = 1;
1231 }
1232 if (error == -EINVAL) {
1233 /*
1234 * Dell Precision Workstation 410, 610 come here.
1235 */
1236 printk(KERN_ERR PREFIX
1237 "Invalid BIOS MADT, disabling ACPI\n");
1238 disable_acpi();
1239 }
1240 }
1241 #endif
1242 }
1243
1244 static void __init acpi_process_madt(void)
1245 {
1246 #ifdef CONFIG_X86_LOCAL_APIC
1247 int error;
1248
1249 if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) {
1250
1251 /*
1252 * Parse MADT LAPIC entries
1253 */
1254 error = acpi_parse_madt_lapic_entries();
1255 if (!error) {
1256 acpi_lapic = 1;
1257
1258 /*
1259 * Parse MADT IO-APIC entries
1260 */
1261 error = acpi_parse_madt_ioapic_entries();
1262 if (!error) {
1263 acpi_irq_model = ACPI_IRQ_MODEL_IOAPIC;
1264 acpi_ioapic = 1;
1265
1266 smp_found_config = 1;
1267 }
1268 }
1269 if (error == -EINVAL) {
1270 /*
1271 * Dell Precision Workstation 410, 610 come here.
1272 */
1273 printk(KERN_ERR PREFIX
1274 "Invalid BIOS MADT, disabling ACPI\n");
1275 disable_acpi();
1276 }
1277 } else {
1278 /*
1279 * ACPI found no MADT, and so ACPI wants UP PIC mode.
1280 * In the event an MPS table was found, forget it.
1281 * Boot with "acpi=off" to use MPS on such a system.
1282 */
1283 if (smp_found_config) {
1284 printk(KERN_WARNING PREFIX
1285 "No APIC-table, disabling MPS\n");
1286 smp_found_config = 0;
1287 }
1288 }
1289
1290 /*
1291 * ACPI supports both logical (e.g. Hyper-Threading) and physical
1292 * processors, where MPS only supports physical.
1293 */
1294 if (acpi_lapic && acpi_ioapic)
1295 printk(KERN_INFO "Using ACPI (MADT) for SMP configuration "
1296 "information\n");
1297 else if (acpi_lapic)
1298 printk(KERN_INFO "Using ACPI for processor (LAPIC) "
1299 "configuration information\n");
1300 #endif
1301 return;
1302 }
1303
1304 static int __init disable_acpi_irq(const struct dmi_system_id *d)
1305 {
1306 if (!acpi_force) {
1307 printk(KERN_NOTICE "%s detected: force use of acpi=noirq\n",
1308 d->ident);
1309 acpi_noirq_set();
1310 }
1311 return 0;
1312 }
1313
1314 static int __init disable_acpi_pci(const struct dmi_system_id *d)
1315 {
1316 if (!acpi_force) {
1317 printk(KERN_NOTICE "%s detected: force use of pci=noacpi\n",
1318 d->ident);
1319 acpi_disable_pci();
1320 }
1321 return 0;
1322 }
1323
1324 static int __init dmi_disable_acpi(const struct dmi_system_id *d)
1325 {
1326 if (!acpi_force) {
1327 printk(KERN_NOTICE "%s detected: acpi off\n", d->ident);
1328 disable_acpi();
1329 } else {
1330 printk(KERN_NOTICE
1331 "Warning: DMI blacklist says broken, but acpi forced\n");
1332 }
1333 return 0;
1334 }
1335
1336 /*
1337 * Force ignoring BIOS IRQ0 pin2 override
1338 */
1339 static int __init dmi_ignore_irq0_timer_override(const struct dmi_system_id *d)
1340 {
1341 /*
1342 * The ati_ixp4x0_rev() early PCI quirk should have set
1343 * the acpi_skip_timer_override flag already:
1344 */
1345 if (!acpi_skip_timer_override) {
1346 WARN(1, KERN_ERR "ati_ixp4x0 quirk not complete.\n");
1347 pr_notice("%s detected: Ignoring BIOS IRQ0 pin2 override\n",
1348 d->ident);
1349 acpi_skip_timer_override = 1;
1350 }
1351 return 0;
1352 }
1353
1354 /*
1355 * If your system is blacklisted here, but you find that acpi=force
1356 * works for you, please contact linux-acpi@vger.kernel.org
1357 */
1358 static struct dmi_system_id __initdata acpi_dmi_table[] = {
1359 /*
1360 * Boxes that need ACPI disabled
1361 */
1362 {
1363 .callback = dmi_disable_acpi,
1364 .ident = "IBM Thinkpad",
1365 .matches = {
1366 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1367 DMI_MATCH(DMI_BOARD_NAME, "2629H1G"),
1368 },
1369 },
1370
1371 /*
1372 * Boxes that need ACPI PCI IRQ routing disabled
1373 */
1374 {
1375 .callback = disable_acpi_irq,
1376 .ident = "ASUS A7V",
1377 .matches = {
1378 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC"),
1379 DMI_MATCH(DMI_BOARD_NAME, "<A7V>"),
1380 /* newer BIOS, Revision 1011, does work */
1381 DMI_MATCH(DMI_BIOS_VERSION,
1382 "ASUS A7V ACPI BIOS Revision 1007"),
1383 },
1384 },
1385 {
1386 /*
1387 * Latest BIOS for IBM 600E (1.16) has bad pcinum
1388 * for LPC bridge, which is needed for the PCI
1389 * interrupt links to work. DSDT fix is in bug 5966.
1390 * 2645, 2646 model numbers are shared with 600/600E/600X
1391 */
1392 .callback = disable_acpi_irq,
1393 .ident = "IBM Thinkpad 600 Series 2645",
1394 .matches = {
1395 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1396 DMI_MATCH(DMI_BOARD_NAME, "2645"),
1397 },
1398 },
1399 {
1400 .callback = disable_acpi_irq,
1401 .ident = "IBM Thinkpad 600 Series 2646",
1402 .matches = {
1403 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1404 DMI_MATCH(DMI_BOARD_NAME, "2646"),
1405 },
1406 },
1407 /*
1408 * Boxes that need ACPI PCI IRQ routing and PCI scan disabled
1409 */
1410 { /* _BBN 0 bug */
1411 .callback = disable_acpi_pci,
1412 .ident = "ASUS PR-DLS",
1413 .matches = {
1414 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
1415 DMI_MATCH(DMI_BOARD_NAME, "PR-DLS"),
1416 DMI_MATCH(DMI_BIOS_VERSION,
1417 "ASUS PR-DLS ACPI BIOS Revision 1010"),
1418 DMI_MATCH(DMI_BIOS_DATE, "03/21/2003")
1419 },
1420 },
1421 {
1422 .callback = disable_acpi_pci,
1423 .ident = "Acer TravelMate 36x Laptop",
1424 .matches = {
1425 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
1426 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 360"),
1427 },
1428 },
1429 {}
1430 };
1431
1432 /* second table for DMI checks that should run after early-quirks */
1433 static struct dmi_system_id __initdata acpi_dmi_table_late[] = {
1434 /*
1435 * HP laptops which use a DSDT reporting as HP/SB400/10000,
1436 * which includes some code which overrides all temperature
1437 * trip points to 16C if the INTIN2 input of the I/O APIC
1438 * is enabled. This input is incorrectly designated the
1439 * ISA IRQ 0 via an interrupt source override even though
1440 * it is wired to the output of the master 8259A and INTIN0
1441 * is not connected at all. Force ignoring BIOS IRQ0 pin2
1442 * override in that cases.
1443 */
1444 {
1445 .callback = dmi_ignore_irq0_timer_override,
1446 .ident = "HP nx6115 laptop",
1447 .matches = {
1448 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1449 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6115"),
1450 },
1451 },
1452 {
1453 .callback = dmi_ignore_irq0_timer_override,
1454 .ident = "HP NX6125 laptop",
1455 .matches = {
1456 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1457 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6125"),
1458 },
1459 },
1460 {
1461 .callback = dmi_ignore_irq0_timer_override,
1462 .ident = "HP NX6325 laptop",
1463 .matches = {
1464 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1465 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6325"),
1466 },
1467 },
1468 {
1469 .callback = dmi_ignore_irq0_timer_override,
1470 .ident = "HP 6715b laptop",
1471 .matches = {
1472 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1473 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq 6715b"),
1474 },
1475 },
1476 {}
1477 };
1478
1479 /*
1480 * acpi_boot_table_init() and acpi_boot_init()
1481 * called from setup_arch(), always.
1482 * 1. checksums all tables
1483 * 2. enumerates lapics
1484 * 3. enumerates io-apics
1485 *
1486 * acpi_table_init() is separate to allow reading SRAT without
1487 * other side effects.
1488 *
1489 * side effects of acpi_boot_init:
1490 * acpi_lapic = 1 if LAPIC found
1491 * acpi_ioapic = 1 if IOAPIC found
1492 * if (acpi_lapic && acpi_ioapic) smp_found_config = 1;
1493 * if acpi_blacklisted() acpi_disabled = 1;
1494 * acpi_irq_model=...
1495 * ...
1496 */
1497
1498 void __init acpi_boot_table_init(void)
1499 {
1500 dmi_check_system(acpi_dmi_table);
1501
1502 /*
1503 * If acpi_disabled, bail out
1504 * One exception: acpi=ht continues far enough to enumerate LAPICs
1505 */
1506 if (acpi_disabled && !acpi_ht)
1507 return;
1508
1509 /*
1510 * Initialize the ACPI boot-time table parser.
1511 */
1512 if (acpi_table_init()) {
1513 disable_acpi();
1514 return;
1515 }
1516
1517 acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf);
1518
1519 /*
1520 * blacklist may disable ACPI entirely
1521 */
1522 if (acpi_blacklisted()) {
1523 if (acpi_force) {
1524 printk(KERN_WARNING PREFIX "acpi=force override\n");
1525 } else {
1526 printk(KERN_WARNING PREFIX "Disabling ACPI support\n");
1527 disable_acpi();
1528 return;
1529 }
1530 }
1531 }
1532
1533 int __init early_acpi_boot_init(void)
1534 {
1535 /*
1536 * If acpi_disabled, bail out
1537 * One exception: acpi=ht continues far enough to enumerate LAPICs
1538 */
1539 if (acpi_disabled && !acpi_ht)
1540 return 1;
1541
1542 /*
1543 * Process the Multiple APIC Description Table (MADT), if present
1544 */
1545 early_acpi_process_madt();
1546
1547 return 0;
1548 }
1549
1550 int __init acpi_boot_init(void)
1551 {
1552 /* those are executed after early-quirks are executed */
1553 dmi_check_system(acpi_dmi_table_late);
1554
1555 /*
1556 * If acpi_disabled, bail out
1557 * One exception: acpi=ht continues far enough to enumerate LAPICs
1558 */
1559 if (acpi_disabled && !acpi_ht)
1560 return 1;
1561
1562 acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf);
1563
1564 /*
1565 * set sci_int and PM timer address
1566 */
1567 acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt);
1568
1569 /*
1570 * Process the Multiple APIC Description Table (MADT), if present
1571 */
1572 acpi_process_madt();
1573
1574 acpi_table_parse(ACPI_SIG_HPET, acpi_parse_hpet);
1575
1576 if (!acpi_noirq)
1577 x86_init.pci.init = pci_acpi_init;
1578
1579 return 0;
1580 }
1581
1582 static int __init parse_acpi(char *arg)
1583 {
1584 if (!arg)
1585 return -EINVAL;
1586
1587 /* "acpi=off" disables both ACPI table parsing and interpreter */
1588 if (strcmp(arg, "off") == 0) {
1589 disable_acpi();
1590 }
1591 /* acpi=force to over-ride black-list */
1592 else if (strcmp(arg, "force") == 0) {
1593 acpi_force = 1;
1594 acpi_ht = 1;
1595 acpi_disabled = 0;
1596 }
1597 /* acpi=strict disables out-of-spec workarounds */
1598 else if (strcmp(arg, "strict") == 0) {
1599 acpi_strict = 1;
1600 }
1601 /* Limit ACPI just to boot-time to enable HT */
1602 else if (strcmp(arg, "ht") == 0) {
1603 if (!acpi_force) {
1604 printk(KERN_WARNING "acpi=ht will be removed in Linux-2.6.35\n");
1605 disable_acpi();
1606 }
1607 acpi_ht = 1;
1608 }
1609 /* acpi=rsdt use RSDT instead of XSDT */
1610 else if (strcmp(arg, "rsdt") == 0) {
1611 acpi_rsdt_forced = 1;
1612 }
1613 /* "acpi=noirq" disables ACPI interrupt routing */
1614 else if (strcmp(arg, "noirq") == 0) {
1615 acpi_noirq_set();
1616 } else {
1617 /* Core will printk when we return error. */
1618 return -EINVAL;
1619 }
1620 return 0;
1621 }
1622 early_param("acpi", parse_acpi);
1623
1624 /* FIXME: Using pci= for an ACPI parameter is a travesty. */
1625 static int __init parse_pci(char *arg)
1626 {
1627 if (arg && strcmp(arg, "noacpi") == 0)
1628 acpi_disable_pci();
1629 return 0;
1630 }
1631 early_param("pci", parse_pci);
1632
1633 int __init acpi_mps_check(void)
1634 {
1635 #if defined(CONFIG_X86_LOCAL_APIC) && !defined(CONFIG_X86_MPPARSE)
1636 /* mptable code is not built-in*/
1637 if (acpi_disabled || acpi_noirq) {
1638 printk(KERN_WARNING "MPS support code is not built-in.\n"
1639 "Using acpi=off or acpi=noirq or pci=noacpi "
1640 "may have problem\n");
1641 return 1;
1642 }
1643 #endif
1644 return 0;
1645 }
1646
1647 #ifdef CONFIG_X86_IO_APIC
1648 static int __init parse_acpi_skip_timer_override(char *arg)
1649 {
1650 acpi_skip_timer_override = 1;
1651 return 0;
1652 }
1653 early_param("acpi_skip_timer_override", parse_acpi_skip_timer_override);
1654
1655 static int __init parse_acpi_use_timer_override(char *arg)
1656 {
1657 acpi_use_timer_override = 1;
1658 return 0;
1659 }
1660 early_param("acpi_use_timer_override", parse_acpi_use_timer_override);
1661 #endif /* CONFIG_X86_IO_APIC */
1662
1663 static int __init setup_acpi_sci(char *s)
1664 {
1665 if (!s)
1666 return -EINVAL;
1667 if (!strcmp(s, "edge"))
1668 acpi_sci_flags = ACPI_MADT_TRIGGER_EDGE |
1669 (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK);
1670 else if (!strcmp(s, "level"))
1671 acpi_sci_flags = ACPI_MADT_TRIGGER_LEVEL |
1672 (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK);
1673 else if (!strcmp(s, "high"))
1674 acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_HIGH |
1675 (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK);
1676 else if (!strcmp(s, "low"))
1677 acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_LOW |
1678 (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK);
1679 else
1680 return -EINVAL;
1681 return 0;
1682 }
1683 early_param("acpi_sci", setup_acpi_sci);
1684
1685 int __acpi_acquire_global_lock(unsigned int *lock)
1686 {
1687 unsigned int old, new, val;
1688 do {
1689 old = *lock;
1690 new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1));
1691 val = cmpxchg(lock, old, new);
1692 } while (unlikely (val != old));
1693 return (new < 3) ? -1 : 0;
1694 }
1695
1696 int __acpi_release_global_lock(unsigned int *lock)
1697 {
1698 unsigned int old, new, val;
1699 do {
1700 old = *lock;
1701 new = old & ~0x3;
1702 val = cmpxchg(lock, old, new);
1703 } while (unlikely (val != old));
1704 return old & 0x1;
1705 }
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree