projects / deliverable / linux.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
x86, apic: remove genapic.h
[deliverable/linux.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/bootmem.h>
35 #include <linux/ioport.h>
36
37 #include <asm/pgtable.h>
38 #include <asm/io_apic.h>
39 #include <asm/apic.h>
40 #include <asm/apic.h>
41 #include <asm/io.h>
42 #include <asm/mpspec.h>
43 #include <asm/smp.h>
44
45 static int __initdata acpi_force = 0;
46 u32 acpi_rsdt_forced;
47 #ifdef CONFIG_ACPI
48 int acpi_disabled = 0;
49 #else
50 int acpi_disabled = 1;
51 #endif
52 EXPORT_SYMBOL(acpi_disabled);
53
54 #ifdef CONFIG_X86_64
55 # include <asm/proto.h>
56 #endif /* X86 */
57
58 #define BAD_MADT_ENTRY(entry, end) ( \
59 (!entry) || (unsigned long)entry + sizeof(*entry) > end || \
60 ((struct acpi_subtable_header *)entry)->length < sizeof(*entry))
61
62 #define PREFIX "ACPI: "
63
64 int acpi_noirq; /* skip ACPI IRQ initialization */
65 int acpi_pci_disabled; /* skip ACPI PCI scan and IRQ initialization */
66 EXPORT_SYMBOL(acpi_pci_disabled);
67 int acpi_ht __initdata = 1; /* enable HT */
68
69 int acpi_lapic;
70 int acpi_ioapic;
71 int acpi_strict;
72
73 u8 acpi_sci_flags __initdata;
74 int acpi_sci_override_gsi __initdata;
75 int acpi_skip_timer_override __initdata;
76 int acpi_use_timer_override __initdata;
77
78 #ifdef CONFIG_X86_LOCAL_APIC
79 static u64 acpi_lapic_addr __initdata = APIC_DEFAULT_PHYS_BASE;
80 #endif
81
82 #ifndef __HAVE_ARCH_CMPXCHG
83 #warning ACPI uses CMPXCHG, i486 and later hardware
84 #endif
85
86 /* --------------------------------------------------------------------------
87 Boot-time Configuration
88 -------------------------------------------------------------------------- */
89
90 /*
91 * The default interrupt routing model is PIC (8259). This gets
92 * overridden if IOAPICs are enumerated (below).
93 */
94 enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_PIC;
95
96
97 /*
98 * Temporarily use the virtual area starting from FIX_IO_APIC_BASE_END,
99 * to map the target physical address. The problem is that set_fixmap()
100 * provides a single page, and it is possible that the page is not
101 * sufficient.
102 * By using this area, we can map up to MAX_IO_APICS pages temporarily,
103 * i.e. until the next __va_range() call.
104 *
105 * Important Safety Note: The fixed I/O APIC page numbers are *subtracted*
106 * from the fixed base. That's why we start at FIX_IO_APIC_BASE_END and
107 * count idx down while incrementing the phys address.
108 */
109 char *__init __acpi_map_table(unsigned long phys, unsigned long size)
110 {
111
112 if (!phys || !size)
113 return NULL;
114
115 return early_ioremap(phys, size);
116 }
117 void __init __acpi_unmap_table(char *map, unsigned long size)
118 {
119 if (!map || !size)
120 return;
121
122 early_iounmap(map, size);
123 }
124
125 #ifdef CONFIG_PCI_MMCONFIG
126
127 static int acpi_mcfg_64bit_base_addr __initdata = FALSE;
128
129 /* The physical address of the MMCONFIG aperture. Set from ACPI tables. */
130 struct acpi_mcfg_allocation *pci_mmcfg_config;
131 int pci_mmcfg_config_num;
132
133 static int __init acpi_mcfg_oem_check(struct acpi_table_mcfg *mcfg)
134 {
135 if (!strcmp(mcfg->header.oem_id, "SGI"))
136 acpi_mcfg_64bit_base_addr = TRUE;
137
138 return 0;
139 }
140
141 int __init acpi_parse_mcfg(struct acpi_table_header *header)
142 {
143 struct acpi_table_mcfg *mcfg;
144 unsigned long i;
145 int config_size;
146
147 if (!header)
148 return -EINVAL;
149
150 mcfg = (struct acpi_table_mcfg *)header;
151
152 /* how many config structures do we have */
153 pci_mmcfg_config_num = 0;
154 i = header->length - sizeof(struct acpi_table_mcfg);
155 while (i >= sizeof(struct acpi_mcfg_allocation)) {
156 ++pci_mmcfg_config_num;
157 i -= sizeof(struct acpi_mcfg_allocation);
158 };
159 if (pci_mmcfg_config_num == 0) {
160 printk(KERN_ERR PREFIX "MMCONFIG has no entries\n");
161 return -ENODEV;
162 }
163
164 config_size = pci_mmcfg_config_num * sizeof(*pci_mmcfg_config);
165 pci_mmcfg_config = kmalloc(config_size, GFP_KERNEL);
166 if (!pci_mmcfg_config) {
167 printk(KERN_WARNING PREFIX
168 "No memory for MCFG config tables\n");
169 return -ENOMEM;
170 }
171
172 memcpy(pci_mmcfg_config, &mcfg[1], config_size);
173
174 acpi_mcfg_oem_check(mcfg);
175
176 for (i = 0; i < pci_mmcfg_config_num; ++i) {
177 if ((pci_mmcfg_config[i].address > 0xFFFFFFFF) &&
178 !acpi_mcfg_64bit_base_addr) {
179 printk(KERN_ERR PREFIX
180 "MMCONFIG not in low 4GB of memory\n");
181 kfree(pci_mmcfg_config);
182 pci_mmcfg_config_num = 0;
183 return -ENODEV;
184 }
185 }
186
187 return 0;
188 }
189 #endif /* CONFIG_PCI_MMCONFIG */
190
191 #ifdef CONFIG_X86_LOCAL_APIC
192 static int __init acpi_parse_madt(struct acpi_table_header *table)
193 {
194 struct acpi_table_madt *madt = NULL;
195
196 if (!cpu_has_apic)
197 return -EINVAL;
198
199 madt = (struct acpi_table_madt *)table;
200 if (!madt) {
201 printk(KERN_WARNING PREFIX "Unable to map MADT\n");
202 return -ENODEV;
203 }
204
205 if (madt->address) {
206 acpi_lapic_addr = (u64) madt->address;
207
208 printk(KERN_DEBUG PREFIX "Local APIC address 0x%08x\n",
209 madt->address);
210 }
211
212 default_acpi_madt_oem_check(madt->header.oem_id,
213 madt->header.oem_table_id);
214
215 return 0;
216 }
217
218 static void __cpuinit acpi_register_lapic(int id, u8 enabled)
219 {
220 unsigned int ver = 0;
221
222 if (!enabled) {
223 ++disabled_cpus;
224 return;
225 }
226
227 if (boot_cpu_physical_apicid != -1U)
228 ver = apic_version[boot_cpu_physical_apicid];
229
230 generic_processor_info(id, ver);
231 }
232
233 static int __init
234 acpi_parse_lapic(struct acpi_subtable_header * header, const unsigned long end)
235 {
236 struct acpi_madt_local_apic *processor = NULL;
237
238 processor = (struct acpi_madt_local_apic *)header;
239
240 if (BAD_MADT_ENTRY(processor, end))
241 return -EINVAL;
242
243 acpi_table_print_madt_entry(header);
244
245 /*
246 * We need to register disabled CPU as well to permit
247 * counting disabled CPUs. This allows us to size
248 * cpus_possible_map more accurately, to permit
249 * to not preallocating memory for all NR_CPUS
250 * when we use CPU hotplug.
251 */
252 acpi_register_lapic(processor->id, /* APIC ID */
253 processor->lapic_flags & ACPI_MADT_ENABLED);
254
255 return 0;
256 }
257
258 static int __init
259 acpi_parse_sapic(struct acpi_subtable_header *header, const unsigned long end)
260 {
261 struct acpi_madt_local_sapic *processor = NULL;
262
263 processor = (struct acpi_madt_local_sapic *)header;
264
265 if (BAD_MADT_ENTRY(processor, end))
266 return -EINVAL;
267
268 acpi_table_print_madt_entry(header);
269
270 acpi_register_lapic((processor->id << 8) | processor->eid,/* APIC ID */
271 processor->lapic_flags & ACPI_MADT_ENABLED);
272
273 return 0;
274 }
275
276 static int __init
277 acpi_parse_lapic_addr_ovr(struct acpi_subtable_header * header,
278 const unsigned long end)
279 {
280 struct acpi_madt_local_apic_override *lapic_addr_ovr = NULL;
281
282 lapic_addr_ovr = (struct acpi_madt_local_apic_override *)header;
283
284 if (BAD_MADT_ENTRY(lapic_addr_ovr, end))
285 return -EINVAL;
286
287 acpi_lapic_addr = lapic_addr_ovr->address;
288
289 return 0;
290 }
291
292 static int __init
293 acpi_parse_lapic_nmi(struct acpi_subtable_header * header, const unsigned long end)
294 {
295 struct acpi_madt_local_apic_nmi *lapic_nmi = NULL;
296
297 lapic_nmi = (struct acpi_madt_local_apic_nmi *)header;
298
299 if (BAD_MADT_ENTRY(lapic_nmi, end))
300 return -EINVAL;
301
302 acpi_table_print_madt_entry(header);
303
304 if (lapic_nmi->lint != 1)
305 printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n");
306
307 return 0;
308 }
309
310 #endif /*CONFIG_X86_LOCAL_APIC */
311
312 #ifdef CONFIG_X86_IO_APIC
313
314 static int __init
315 acpi_parse_ioapic(struct acpi_subtable_header * header, const unsigned long end)
316 {
317 struct acpi_madt_io_apic *ioapic = NULL;
318
319 ioapic = (struct acpi_madt_io_apic *)header;
320
321 if (BAD_MADT_ENTRY(ioapic, end))
322 return -EINVAL;
323
324 acpi_table_print_madt_entry(header);
325
326 mp_register_ioapic(ioapic->id,
327 ioapic->address, ioapic->global_irq_base);
328
329 return 0;
330 }
331
332 /*
333 * Parse Interrupt Source Override for the ACPI SCI
334 */
335 static void __init acpi_sci_ioapic_setup(u32 gsi, u16 polarity, u16 trigger)
336 {
337 if (trigger == 0) /* compatible SCI trigger is level */
338 trigger = 3;
339
340 if (polarity == 0) /* compatible SCI polarity is low */
341 polarity = 3;
342
343 /* Command-line over-ride via acpi_sci= */
344 if (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK)
345 trigger = (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) >> 2;
346
347 if (acpi_sci_flags & ACPI_MADT_POLARITY_MASK)
348 polarity = acpi_sci_flags & ACPI_MADT_POLARITY_MASK;
349
350 /*
351 * mp_config_acpi_legacy_irqs() already setup IRQs < 16
352 * If GSI is < 16, this will update its flags,
353 * else it will create a new mp_irqs[] entry.
354 */
355 mp_override_legacy_irq(gsi, polarity, trigger, gsi);
356
357 /*
358 * stash over-ride to indicate we've been here
359 * and for later update of acpi_gbl_FADT
360 */
361 acpi_sci_override_gsi = gsi;
362 return;
363 }
364
365 static int __init
366 acpi_parse_int_src_ovr(struct acpi_subtable_header * header,
367 const unsigned long end)
368 {
369 struct acpi_madt_interrupt_override *intsrc = NULL;
370
371 intsrc = (struct acpi_madt_interrupt_override *)header;
372
373 if (BAD_MADT_ENTRY(intsrc, end))
374 return -EINVAL;
375
376 acpi_table_print_madt_entry(header);
377
378 if (intsrc->source_irq == acpi_gbl_FADT.sci_interrupt) {
379 acpi_sci_ioapic_setup(intsrc->global_irq,
380 intsrc->inti_flags & ACPI_MADT_POLARITY_MASK,
381 (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2);
382 return 0;
383 }
384
385 if (acpi_skip_timer_override &&
386 intsrc->source_irq == 0 && intsrc->global_irq == 2) {
387 printk(PREFIX "BIOS IRQ0 pin2 override ignored.\n");
388 return 0;
389 }
390
391 mp_override_legacy_irq(intsrc->source_irq,
392 intsrc->inti_flags & ACPI_MADT_POLARITY_MASK,
393 (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2,
394 intsrc->global_irq);
395
396 return 0;
397 }
398
399 static int __init
400 acpi_parse_nmi_src(struct acpi_subtable_header * header, const unsigned long end)
401 {
402 struct acpi_madt_nmi_source *nmi_src = NULL;
403
404 nmi_src = (struct acpi_madt_nmi_source *)header;
405
406 if (BAD_MADT_ENTRY(nmi_src, end))
407 return -EINVAL;
408
409 acpi_table_print_madt_entry(header);
410
411 /* TBD: Support nimsrc entries? */
412
413 return 0;
414 }
415
416 #endif /* CONFIG_X86_IO_APIC */
417
418 /*
419 * acpi_pic_sci_set_trigger()
420 *
421 * use ELCR to set PIC-mode trigger type for SCI
422 *
423 * If a PIC-mode SCI is not recognized or gives spurious IRQ7's
424 * it may require Edge Trigger -- use "acpi_sci=edge"
425 *
426 * Port 0x4d0-4d1 are ECLR1 and ECLR2, the Edge/Level Control Registers
427 * for the 8259 PIC. bit[n] = 1 means irq[n] is Level, otherwise Edge.
428 * ECLR1 is IRQs 0-7 (IRQ 0, 1, 2 must be 0)
429 * ECLR2 is IRQs 8-15 (IRQ 8, 13 must be 0)
430 */
431
432 void __init acpi_pic_sci_set_trigger(unsigned int irq, u16 trigger)
433 {
434 unsigned int mask = 1 << irq;
435 unsigned int old, new;
436
437 /* Real old ELCR mask */
438 old = inb(0x4d0) | (inb(0x4d1) << 8);
439
440 /*
441 * If we use ACPI to set PCI IRQs, then we should clear ELCR
442 * since we will set it correctly as we enable the PCI irq
443 * routing.
444 */
445 new = acpi_noirq ? old : 0;
446
447 /*
448 * Update SCI information in the ELCR, it isn't in the PCI
449 * routing tables..
450 */
451 switch (trigger) {
452 case 1: /* Edge - clear */
453 new &= ~mask;
454 break;
455 case 3: /* Level - set */
456 new |= mask;
457 break;
458 }
459
460 if (old == new)
461 return;
462
463 printk(PREFIX "setting ELCR to %04x (from %04x)\n", new, old);
464 outb(new, 0x4d0);
465 outb(new >> 8, 0x4d1);
466 }
467
468 int acpi_gsi_to_irq(u32 gsi, unsigned int *irq)
469 {
470 *irq = gsi;
471 return 0;
472 }
473
474 /*
475 * success: return IRQ number (>=0)
476 * failure: return < 0
477 */
478 int acpi_register_gsi(u32 gsi, int triggering, int polarity)
479 {
480 unsigned int irq;
481 unsigned int plat_gsi = gsi;
482
483 #ifdef CONFIG_PCI
484 /*
485 * Make sure all (legacy) PCI IRQs are set as level-triggered.
486 */
487 if (acpi_irq_model == ACPI_IRQ_MODEL_PIC) {
488 if (triggering == ACPI_LEVEL_SENSITIVE)
489 eisa_set_level_irq(gsi);
490 }
491 #endif
492
493 #ifdef CONFIG_X86_IO_APIC
494 if (acpi_irq_model == ACPI_IRQ_MODEL_IOAPIC) {
495 plat_gsi = mp_register_gsi(gsi, triggering, polarity);
496 }
497 #endif
498 acpi_gsi_to_irq(plat_gsi, &irq);
499 return irq;
500 }
501
502 /*
503 * ACPI based hotplug support for CPU
504 */
505 #ifdef CONFIG_ACPI_HOTPLUG_CPU
506
507 static int __cpuinit _acpi_map_lsapic(acpi_handle handle, int *pcpu)
508 {
509 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
510 union acpi_object *obj;
511 struct acpi_madt_local_apic *lapic;
512 cpumask_var_t tmp_map, new_map;
513 u8 physid;
514 int cpu;
515 int retval = -ENOMEM;
516
517 if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer)))
518 return -EINVAL;
519
520 if (!buffer.length || !buffer.pointer)
521 return -EINVAL;
522
523 obj = buffer.pointer;
524 if (obj->type != ACPI_TYPE_BUFFER ||
525 obj->buffer.length < sizeof(*lapic)) {
526 kfree(buffer.pointer);
527 return -EINVAL;
528 }
529
530 lapic = (struct acpi_madt_local_apic *)obj->buffer.pointer;
531
532 if (lapic->header.type != ACPI_MADT_TYPE_LOCAL_APIC ||
533 !(lapic->lapic_flags & ACPI_MADT_ENABLED)) {
534 kfree(buffer.pointer);
535 return -EINVAL;
536 }
537
538 physid = lapic->id;
539
540 kfree(buffer.pointer);
541 buffer.length = ACPI_ALLOCATE_BUFFER;
542 buffer.pointer = NULL;
543
544 if (!alloc_cpumask_var(&tmp_map, GFP_KERNEL))
545 goto out;
546
547 if (!alloc_cpumask_var(&new_map, GFP_KERNEL))
548 goto free_tmp_map;
549
550 cpumask_copy(tmp_map, cpu_present_mask);
551 acpi_register_lapic(physid, lapic->lapic_flags & ACPI_MADT_ENABLED);
552
553 /*
554 * If mp_register_lapic successfully generates a new logical cpu
555 * number, then the following will get us exactly what was mapped
556 */
557 cpumask_andnot(new_map, cpu_present_mask, tmp_map);
558 if (cpumask_empty(new_map)) {
559 printk ("Unable to map lapic to logical cpu number\n");
560 retval = -EINVAL;
561 goto free_new_map;
562 }
563
564 cpu = cpumask_first(new_map);
565
566 *pcpu = cpu;
567 retval = 0;
568
569 free_new_map:
570 free_cpumask_var(new_map);
571 free_tmp_map:
572 free_cpumask_var(tmp_map);
573 out:
574 return retval;
575 }
576
577 /* wrapper to silence section mismatch warning */
578 int __ref acpi_map_lsapic(acpi_handle handle, int *pcpu)
579 {
580 return _acpi_map_lsapic(handle, pcpu);
581 }
582 EXPORT_SYMBOL(acpi_map_lsapic);
583
584 int acpi_unmap_lsapic(int cpu)
585 {
586 per_cpu(x86_cpu_to_apicid, cpu) = -1;
587 set_cpu_present(cpu, false);
588 num_processors--;
589
590 return (0);
591 }
592
593 EXPORT_SYMBOL(acpi_unmap_lsapic);
594 #endif /* CONFIG_ACPI_HOTPLUG_CPU */
595
596 int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base)
597 {
598 /* TBD */
599 return -EINVAL;
600 }
601
602 EXPORT_SYMBOL(acpi_register_ioapic);
603
604 int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base)
605 {
606 /* TBD */
607 return -EINVAL;
608 }
609
610 EXPORT_SYMBOL(acpi_unregister_ioapic);
611
612 static int __init acpi_parse_sbf(struct acpi_table_header *table)
613 {
614 struct acpi_table_boot *sb;
615
616 sb = (struct acpi_table_boot *)table;
617 if (!sb) {
618 printk(KERN_WARNING PREFIX "Unable to map SBF\n");
619 return -ENODEV;
620 }
621
622 sbf_port = sb->cmos_index; /* Save CMOS port */
623
624 return 0;
625 }
626
627 #ifdef CONFIG_HPET_TIMER
628 #include <asm/hpet.h>
629
630 static struct __initdata resource *hpet_res;
631
632 static int __init acpi_parse_hpet(struct acpi_table_header *table)
633 {
634 struct acpi_table_hpet *hpet_tbl;
635
636 hpet_tbl = (struct acpi_table_hpet *)table;
637 if (!hpet_tbl) {
638 printk(KERN_WARNING PREFIX "Unable to map HPET\n");
639 return -ENODEV;
640 }
641
642 if (hpet_tbl->address.space_id != ACPI_SPACE_MEM) {
643 printk(KERN_WARNING PREFIX "HPET timers must be located in "
644 "memory.\n");
645 return -1;
646 }
647
648 hpet_address = hpet_tbl->address.address;
649
650 /*
651 * Some broken BIOSes advertise HPET at 0x0. We really do not
652 * want to allocate a resource there.
653 */
654 if (!hpet_address) {
655 printk(KERN_WARNING PREFIX
656 "HPET id: %#x base: %#lx is invalid\n",
657 hpet_tbl->id, hpet_address);
658 return 0;
659 }
660 #ifdef CONFIG_X86_64
661 /*
662 * Some even more broken BIOSes advertise HPET at
663 * 0xfed0000000000000 instead of 0xfed00000. Fix it up and add
664 * some noise:
665 */
666 if (hpet_address == 0xfed0000000000000UL) {
667 if (!hpet_force_user) {
668 printk(KERN_WARNING PREFIX "HPET id: %#x "
669 "base: 0xfed0000000000000 is bogus\n "
670 "try hpet=force on the kernel command line to "
671 "fix it up to 0xfed00000.\n", hpet_tbl->id);
672 hpet_address = 0;
673 return 0;
674 }
675 printk(KERN_WARNING PREFIX
676 "HPET id: %#x base: 0xfed0000000000000 fixed up "
677 "to 0xfed00000.\n", hpet_tbl->id);
678 hpet_address >>= 32;
679 }
680 #endif
681 printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n",
682 hpet_tbl->id, hpet_address);
683
684 /*
685 * Allocate and initialize the HPET firmware resource for adding into
686 * the resource tree during the lateinit timeframe.
687 */
688 #define HPET_RESOURCE_NAME_SIZE 9
689 hpet_res = alloc_bootmem(sizeof(*hpet_res) + HPET_RESOURCE_NAME_SIZE);
690
691 hpet_res->name = (void *)&hpet_res[1];
692 hpet_res->flags = IORESOURCE_MEM;
693 snprintf((char *)hpet_res->name, HPET_RESOURCE_NAME_SIZE, "HPET %u",
694 hpet_tbl->sequence);
695
696 hpet_res->start = hpet_address;
697 hpet_res->end = hpet_address + (1 * 1024) - 1;
698
699 return 0;
700 }
701
702 /*
703 * hpet_insert_resource inserts the HPET resources used into the resource
704 * tree.
705 */
706 static __init int hpet_insert_resource(void)
707 {
708 if (!hpet_res)
709 return 1;
710
711 return insert_resource(&iomem_resource, hpet_res);
712 }
713
714 late_initcall(hpet_insert_resource);
715
716 #else
717 #define acpi_parse_hpet NULL
718 #endif
719
720 static int __init acpi_parse_fadt(struct acpi_table_header *table)
721 {
722
723 #ifdef CONFIG_X86_PM_TIMER
724 /* detect the location of the ACPI PM Timer */
725 if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID) {
726 /* FADT rev. 2 */
727 if (acpi_gbl_FADT.xpm_timer_block.space_id !=
728 ACPI_ADR_SPACE_SYSTEM_IO)
729 return 0;
730
731 pmtmr_ioport = acpi_gbl_FADT.xpm_timer_block.address;
732 /*
733 * "X" fields are optional extensions to the original V1.0
734 * fields, so we must selectively expand V1.0 fields if the
735 * corresponding X field is zero.
736 */
737 if (!pmtmr_ioport)
738 pmtmr_ioport = acpi_gbl_FADT.pm_timer_block;
739 } else {
740 /* FADT rev. 1 */
741 pmtmr_ioport = acpi_gbl_FADT.pm_timer_block;
742 }
743 if (pmtmr_ioport)
744 printk(KERN_INFO PREFIX "PM-Timer IO Port: %#x\n",
745 pmtmr_ioport);
746 #endif
747 return 0;
748 }
749
750 #ifdef CONFIG_X86_LOCAL_APIC
751 /*
752 * Parse LAPIC entries in MADT
753 * returns 0 on success, < 0 on error
754 */
755
756 static void __init acpi_register_lapic_address(unsigned long address)
757 {
758 mp_lapic_addr = address;
759
760 set_fixmap_nocache(FIX_APIC_BASE, address);
761 if (boot_cpu_physical_apicid == -1U) {
762 boot_cpu_physical_apicid = read_apic_id();
763 apic_version[boot_cpu_physical_apicid] =
764 GET_APIC_VERSION(apic_read(APIC_LVR));
765 }
766 }
767
768 static int __init early_acpi_parse_madt_lapic_addr_ovr(void)
769 {
770 int count;
771
772 if (!cpu_has_apic)
773 return -ENODEV;
774
775 /*
776 * Note that the LAPIC address is obtained from the MADT (32-bit value)
777 * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value).
778 */
779
780 count =
781 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE,
782 acpi_parse_lapic_addr_ovr, 0);
783 if (count < 0) {
784 printk(KERN_ERR PREFIX
785 "Error parsing LAPIC address override entry\n");
786 return count;
787 }
788
789 acpi_register_lapic_address(acpi_lapic_addr);
790
791 return count;
792 }
793
794 static int __init acpi_parse_madt_lapic_entries(void)
795 {
796 int count;
797
798 if (!cpu_has_apic)
799 return -ENODEV;
800
801 /*
802 * Note that the LAPIC address is obtained from the MADT (32-bit value)
803 * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value).
804 */
805
806 count =
807 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE,
808 acpi_parse_lapic_addr_ovr, 0);
809 if (count < 0) {
810 printk(KERN_ERR PREFIX
811 "Error parsing LAPIC address override entry\n");
812 return count;
813 }
814
815 acpi_register_lapic_address(acpi_lapic_addr);
816
817 count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_SAPIC,
818 acpi_parse_sapic, MAX_APICS);
819
820 if (!count)
821 count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC,
822 acpi_parse_lapic, MAX_APICS);
823 if (!count) {
824 printk(KERN_ERR PREFIX "No LAPIC entries present\n");
825 /* TBD: Cleanup to allow fallback to MPS */
826 return -ENODEV;
827 } else if (count < 0) {
828 printk(KERN_ERR PREFIX "Error parsing LAPIC entry\n");
829 /* TBD: Cleanup to allow fallback to MPS */
830 return count;
831 }
832
833 count =
834 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI, acpi_parse_lapic_nmi, 0);
835 if (count < 0) {
836 printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n");
837 /* TBD: Cleanup to allow fallback to MPS */
838 return count;
839 }
840 return 0;
841 }
842 #endif /* CONFIG_X86_LOCAL_APIC */
843
844 #ifdef CONFIG_X86_IO_APIC
845 #define MP_ISA_BUS 0
846
847 #ifdef CONFIG_X86_ES7000
848 extern int es7000_plat;
849 #endif
850
851 static struct {
852 int apic_id;
853 int gsi_base;
854 int gsi_end;
855 DECLARE_BITMAP(pin_programmed, MP_MAX_IOAPIC_PIN + 1);
856 } mp_ioapic_routing[MAX_IO_APICS];
857
858 int mp_find_ioapic(int gsi)
859 {
860 int i = 0;
861
862 /* Find the IOAPIC that manages this GSI. */
863 for (i = 0; i < nr_ioapics; i++) {
864 if ((gsi >= mp_ioapic_routing[i].gsi_base)
865 && (gsi <= mp_ioapic_routing[i].gsi_end))
866 return i;
867 }
868
869 printk(KERN_ERR "ERROR: Unable to locate IOAPIC for GSI %d\n", gsi);
870 return -1;
871 }
872
873 int mp_find_ioapic_pin(int ioapic, int gsi)
874 {
875 if (WARN_ON(ioapic == -1))
876 return -1;
877 if (WARN_ON(gsi > mp_ioapic_routing[ioapic].gsi_end))
878 return -1;
879
880 return gsi - mp_ioapic_routing[ioapic].gsi_base;
881 }
882
883 static u8 __init uniq_ioapic_id(u8 id)
884 {
885 #ifdef CONFIG_X86_32
886 if ((boot_cpu_data.x86_vendor == X86_VENDOR_INTEL) &&
887 !APIC_XAPIC(apic_version[boot_cpu_physical_apicid]))
888 return io_apic_get_unique_id(nr_ioapics, id);
889 else
890 return id;
891 #else
892 int i;
893 DECLARE_BITMAP(used, 256);
894 bitmap_zero(used, 256);
895 for (i = 0; i < nr_ioapics; i++) {
896 struct mpc_ioapic *ia = &mp_ioapics[i];
897 __set_bit(ia->apicid, used);
898 }
899 if (!test_bit(id, used))
900 return id;
901 return find_first_zero_bit(used, 256);
902 #endif
903 }
904
905 static int bad_ioapic(unsigned long address)
906 {
907 if (nr_ioapics >= MAX_IO_APICS) {
908 printk(KERN_ERR "ERROR: Max # of I/O APICs (%d) exceeded "
909 "(found %d)\n", MAX_IO_APICS, nr_ioapics);
910 panic("Recompile kernel with bigger MAX_IO_APICS!\n");
911 }
912 if (!address) {
913 printk(KERN_ERR "WARNING: Bogus (zero) I/O APIC address"
914 " found in table, skipping!\n");
915 return 1;
916 }
917 return 0;
918 }
919
920 void __init mp_register_ioapic(int id, u32 address, u32 gsi_base)
921 {
922 int idx = 0;
923
924 if (bad_ioapic(address))
925 return;
926
927 idx = nr_ioapics;
928
929 mp_ioapics[idx].type = MP_IOAPIC;
930 mp_ioapics[idx].flags = MPC_APIC_USABLE;
931 mp_ioapics[idx].apicaddr = address;
932
933 set_fixmap_nocache(FIX_IO_APIC_BASE_0 + idx, address);
934 mp_ioapics[idx].apicid = uniq_ioapic_id(id);
935 #ifdef CONFIG_X86_32
936 mp_ioapics[idx].apicver = io_apic_get_version(idx);
937 #else
938 mp_ioapics[idx].apicver = 0;
939 #endif
940 /*
941 * Build basic GSI lookup table to facilitate gsi->io_apic lookups
942 * and to prevent reprogramming of IOAPIC pins (PCI GSIs).
943 */
944 mp_ioapic_routing[idx].apic_id = mp_ioapics[idx].apicid;
945 mp_ioapic_routing[idx].gsi_base = gsi_base;
946 mp_ioapic_routing[idx].gsi_end = gsi_base +
947 io_apic_get_redir_entries(idx);
948
949 printk(KERN_INFO "IOAPIC[%d]: apic_id %d, version %d, address 0x%x, "
950 "GSI %d-%d\n", idx, mp_ioapics[idx].apicid,
951 mp_ioapics[idx].apicver, mp_ioapics[idx].apicaddr,
952 mp_ioapic_routing[idx].gsi_base, mp_ioapic_routing[idx].gsi_end);
953
954 nr_ioapics++;
955 }
956
957 int __init acpi_probe_gsi(void)
958 {
959 int idx;
960 int gsi;
961 int max_gsi = 0;
962
963 if (acpi_disabled)
964 return 0;
965
966 if (!acpi_ioapic)
967 return 0;
968
969 max_gsi = 0;
970 for (idx = 0; idx < nr_ioapics; idx++) {
971 gsi = mp_ioapic_routing[idx].gsi_end;
972
973 if (gsi > max_gsi)
974 max_gsi = gsi;
975 }
976
977 return max_gsi + 1;
978 }
979
980 static void assign_to_mp_irq(struct mpc_intsrc *m,
981 struct mpc_intsrc *mp_irq)
982 {
983 memcpy(mp_irq, m, sizeof(struct mpc_intsrc));
984 }
985
986 static int mp_irq_cmp(struct mpc_intsrc *mp_irq,
987 struct mpc_intsrc *m)
988 {
989 return memcmp(mp_irq, m, sizeof(struct mpc_intsrc));
990 }
991
992 static void save_mp_irq(struct mpc_intsrc *m)
993 {
994 int i;
995
996 for (i = 0; i < mp_irq_entries; i++) {
997 if (!mp_irq_cmp(&mp_irqs[i], m))
998 return;
999 }
1000
1001 assign_to_mp_irq(m, &mp_irqs[mp_irq_entries]);
1002 if (++mp_irq_entries == MAX_IRQ_SOURCES)
1003 panic("Max # of irq sources exceeded!!\n");
1004 }
1005
1006 void __init mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger, u32 gsi)
1007 {
1008 int ioapic;
1009 int pin;
1010 struct mpc_intsrc mp_irq;
1011
1012 /*
1013 * Convert 'gsi' to 'ioapic.pin'.
1014 */
1015 ioapic = mp_find_ioapic(gsi);
1016 if (ioapic < 0)
1017 return;
1018 pin = mp_find_ioapic_pin(ioapic, gsi);
1019
1020 /*
1021 * TBD: This check is for faulty timer entries, where the override
1022 * erroneously sets the trigger to level, resulting in a HUGE
1023 * increase of timer interrupts!
1024 */
1025 if ((bus_irq == 0) && (trigger == 3))
1026 trigger = 1;
1027
1028 mp_irq.type = MP_INTSRC;
1029 mp_irq.irqtype = mp_INT;
1030 mp_irq.irqflag = (trigger << 2) | polarity;
1031 mp_irq.srcbus = MP_ISA_BUS;
1032 mp_irq.srcbusirq = bus_irq; /* IRQ */
1033 mp_irq.dstapic = mp_ioapics[ioapic].apicid; /* APIC ID */
1034 mp_irq.dstirq = pin; /* INTIN# */
1035
1036 save_mp_irq(&mp_irq);
1037 }
1038
1039 void __init mp_config_acpi_legacy_irqs(void)
1040 {
1041 int i;
1042 int ioapic;
1043 unsigned int dstapic;
1044 struct mpc_intsrc mp_irq;
1045
1046 #if defined (CONFIG_MCA) || defined (CONFIG_EISA)
1047 /*
1048 * Fabricate the legacy ISA bus (bus #31).
1049 */
1050 mp_bus_id_to_type[MP_ISA_BUS] = MP_BUS_ISA;
1051 #endif
1052 set_bit(MP_ISA_BUS, mp_bus_not_pci);
1053 pr_debug("Bus #%d is ISA\n", MP_ISA_BUS);
1054
1055 #ifdef CONFIG_X86_ES7000
1056 /*
1057 * Older generations of ES7000 have no legacy identity mappings
1058 */
1059 if (es7000_plat == 1)
1060 return;
1061 #endif
1062
1063 /*
1064 * Locate the IOAPIC that manages the ISA IRQs (0-15).
1065 */
1066 ioapic = mp_find_ioapic(0);
1067 if (ioapic < 0)
1068 return;
1069 dstapic = mp_ioapics[ioapic].apicid;
1070
1071 /*
1072 * Use the default configuration for the IRQs 0-15. Unless
1073 * overridden by (MADT) interrupt source override entries.
1074 */
1075 for (i = 0; i < 16; i++) {
1076 int idx;
1077
1078 for (idx = 0; idx < mp_irq_entries; idx++) {
1079 struct mpc_intsrc *irq = mp_irqs + idx;
1080
1081 /* Do we already have a mapping for this ISA IRQ? */
1082 if (irq->srcbus == MP_ISA_BUS && irq->srcbusirq == i)
1083 break;
1084
1085 /* Do we already have a mapping for this IOAPIC pin */
1086 if (irq->dstapic == dstapic && irq->dstirq == i)
1087 break;
1088 }
1089
1090 if (idx != mp_irq_entries) {
1091 printk(KERN_DEBUG "ACPI: IRQ%d used by override.\n", i);
1092 continue; /* IRQ already used */
1093 }
1094
1095 mp_irq.type = MP_INTSRC;
1096 mp_irq.irqflag = 0; /* Conforming */
1097 mp_irq.srcbus = MP_ISA_BUS;
1098 mp_irq.dstapic = dstapic;
1099 mp_irq.irqtype = mp_INT;
1100 mp_irq.srcbusirq = i; /* Identity mapped */
1101 mp_irq.dstirq = i;
1102
1103 save_mp_irq(&mp_irq);
1104 }
1105 }
1106
1107 int mp_register_gsi(u32 gsi, int triggering, int polarity)
1108 {
1109 int ioapic;
1110 int ioapic_pin;
1111 #ifdef CONFIG_X86_32
1112 #define MAX_GSI_NUM 4096
1113 #define IRQ_COMPRESSION_START 64
1114
1115 static int pci_irq = IRQ_COMPRESSION_START;
1116 /*
1117 * Mapping between Global System Interrupts, which
1118 * represent all possible interrupts, and IRQs
1119 * assigned to actual devices.
1120 */
1121 static int gsi_to_irq[MAX_GSI_NUM];
1122 #else
1123
1124 if (acpi_irq_model != ACPI_IRQ_MODEL_IOAPIC)
1125 return gsi;
1126 #endif
1127
1128 /* Don't set up the ACPI SCI because it's already set up */
1129 if (acpi_gbl_FADT.sci_interrupt == gsi)
1130 return gsi;
1131
1132 ioapic = mp_find_ioapic(gsi);
1133 if (ioapic < 0) {
1134 printk(KERN_WARNING "No IOAPIC for GSI %u\n", gsi);
1135 return gsi;
1136 }
1137
1138 ioapic_pin = mp_find_ioapic_pin(ioapic, gsi);
1139
1140 #ifdef CONFIG_X86_32
1141 if (ioapic_renumber_irq)
1142 gsi = ioapic_renumber_irq(ioapic, gsi);
1143 #endif
1144
1145 /*
1146 * Avoid pin reprogramming. PRTs typically include entries
1147 * with redundant pin->gsi mappings (but unique PCI devices);
1148 * we only program the IOAPIC on the first.
1149 */
1150 if (ioapic_pin > MP_MAX_IOAPIC_PIN) {
1151 printk(KERN_ERR "Invalid reference to IOAPIC pin "
1152 "%d-%d\n", mp_ioapic_routing[ioapic].apic_id,
1153 ioapic_pin);
1154 return gsi;
1155 }
1156 if (test_bit(ioapic_pin, mp_ioapic_routing[ioapic].pin_programmed)) {
1157 pr_debug("Pin %d-%d already programmed\n",
1158 mp_ioapic_routing[ioapic].apic_id, ioapic_pin);
1159 #ifdef CONFIG_X86_32
1160 return (gsi < IRQ_COMPRESSION_START ? gsi : gsi_to_irq[gsi]);
1161 #else
1162 return gsi;
1163 #endif
1164 }
1165
1166 set_bit(ioapic_pin, mp_ioapic_routing[ioapic].pin_programmed);
1167 #ifdef CONFIG_X86_32
1168 /*
1169 * For GSI >= 64, use IRQ compression
1170 */
1171 if ((gsi >= IRQ_COMPRESSION_START)
1172 && (triggering == ACPI_LEVEL_SENSITIVE)) {
1173 /*
1174 * For PCI devices assign IRQs in order, avoiding gaps
1175 * due to unused I/O APIC pins.
1176 */
1177 int irq = gsi;
1178 if (gsi < MAX_GSI_NUM) {
1179 /*
1180 * Retain the VIA chipset work-around (gsi > 15), but
1181 * avoid a problem where the 8254 timer (IRQ0) is setup
1182 * via an override (so it's not on pin 0 of the ioapic),
1183 * and at the same time, the pin 0 interrupt is a PCI
1184 * type. The gsi > 15 test could cause these two pins
1185 * to be shared as IRQ0, and they are not shareable.
1186 * So test for this condition, and if necessary, avoid
1187 * the pin collision.
1188 */
1189 gsi = pci_irq++;
1190 /*
1191 * Don't assign IRQ used by ACPI SCI
1192 */
1193 if (gsi == acpi_gbl_FADT.sci_interrupt)
1194 gsi = pci_irq++;
1195 gsi_to_irq[irq] = gsi;
1196 } else {
1197 printk(KERN_ERR "GSI %u is too high\n", gsi);
1198 return gsi;
1199 }
1200 }
1201 #endif
1202 io_apic_set_pci_routing(ioapic, ioapic_pin, gsi,
1203 triggering == ACPI_EDGE_SENSITIVE ? 0 : 1,
1204 polarity == ACPI_ACTIVE_HIGH ? 0 : 1);
1205 return gsi;
1206 }
1207
1208 int mp_config_acpi_gsi(unsigned char number, unsigned int devfn, u8 pin,
1209 u32 gsi, int triggering, int polarity)
1210 {
1211 #ifdef CONFIG_X86_MPPARSE
1212 struct mpc_intsrc mp_irq;
1213 int ioapic;
1214
1215 if (!acpi_ioapic)
1216 return 0;
1217
1218 /* print the entry should happen on mptable identically */
1219 mp_irq.type = MP_INTSRC;
1220 mp_irq.irqtype = mp_INT;
1221 mp_irq.irqflag = (triggering == ACPI_EDGE_SENSITIVE ? 4 : 0x0c) |
1222 (polarity == ACPI_ACTIVE_HIGH ? 1 : 3);
1223 mp_irq.srcbus = number;
1224 mp_irq.srcbusirq = (((devfn >> 3) & 0x1f) << 2) | ((pin - 1) & 3);
1225 ioapic = mp_find_ioapic(gsi);
1226 mp_irq.dstapic = mp_ioapic_routing[ioapic].apic_id;
1227 mp_irq.dstirq = mp_find_ioapic_pin(ioapic, gsi);
1228
1229 save_mp_irq(&mp_irq);
1230 #endif
1231 return 0;
1232 }
1233
1234 /*
1235 * Parse IOAPIC related entries in MADT
1236 * returns 0 on success, < 0 on error
1237 */
1238 static int __init acpi_parse_madt_ioapic_entries(void)
1239 {
1240 int count;
1241
1242 /*
1243 * ACPI interpreter is required to complete interrupt setup,
1244 * so if it is off, don't enumerate the io-apics with ACPI.
1245 * If MPS is present, it will handle them,
1246 * otherwise the system will stay in PIC mode
1247 */
1248 if (acpi_disabled || acpi_noirq) {
1249 return -ENODEV;
1250 }
1251
1252 if (!cpu_has_apic)
1253 return -ENODEV;
1254
1255 /*
1256 * if "noapic" boot option, don't look for IO-APICs
1257 */
1258 if (skip_ioapic_setup) {
1259 printk(KERN_INFO PREFIX "Skipping IOAPIC probe "
1260 "due to 'noapic' option.\n");
1261 return -ENODEV;
1262 }
1263
1264 count =
1265 acpi_table_parse_madt(ACPI_MADT_TYPE_IO_APIC, acpi_parse_ioapic,
1266 MAX_IO_APICS);
1267 if (!count) {
1268 printk(KERN_ERR PREFIX "No IOAPIC entries present\n");
1269 return -ENODEV;
1270 } else if (count < 0) {
1271 printk(KERN_ERR PREFIX "Error parsing IOAPIC entry\n");
1272 return count;
1273 }
1274
1275 count =
1276 acpi_table_parse_madt(ACPI_MADT_TYPE_INTERRUPT_OVERRIDE, acpi_parse_int_src_ovr,
1277 nr_irqs);
1278 if (count < 0) {
1279 printk(KERN_ERR PREFIX
1280 "Error parsing interrupt source overrides entry\n");
1281 /* TBD: Cleanup to allow fallback to MPS */
1282 return count;
1283 }
1284
1285 /*
1286 * If BIOS did not supply an INT_SRC_OVR for the SCI
1287 * pretend we got one so we can set the SCI flags.
1288 */
1289 if (!acpi_sci_override_gsi)
1290 acpi_sci_ioapic_setup(acpi_gbl_FADT.sci_interrupt, 0, 0);
1291
1292 /* Fill in identity legacy mapings where no override */
1293 mp_config_acpi_legacy_irqs();
1294
1295 count =
1296 acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE, acpi_parse_nmi_src,
1297 nr_irqs);
1298 if (count < 0) {
1299 printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n");
1300 /* TBD: Cleanup to allow fallback to MPS */
1301 return count;
1302 }
1303
1304 return 0;
1305 }
1306 #else
1307 static inline int acpi_parse_madt_ioapic_entries(void)
1308 {
1309 return -1;
1310 }
1311 #endif /* !CONFIG_X86_IO_APIC */
1312
1313 static void __init early_acpi_process_madt(void)
1314 {
1315 #ifdef CONFIG_X86_LOCAL_APIC
1316 int error;
1317
1318 if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) {
1319
1320 /*
1321 * Parse MADT LAPIC entries
1322 */
1323 error = early_acpi_parse_madt_lapic_addr_ovr();
1324 if (!error) {
1325 acpi_lapic = 1;
1326 smp_found_config = 1;
1327 }
1328 if (error == -EINVAL) {
1329 /*
1330 * Dell Precision Workstation 410, 610 come here.
1331 */
1332 printk(KERN_ERR PREFIX
1333 "Invalid BIOS MADT, disabling ACPI\n");
1334 disable_acpi();
1335 }
1336 }
1337 #endif
1338 }
1339
1340 static void __init acpi_process_madt(void)
1341 {
1342 #ifdef CONFIG_X86_LOCAL_APIC
1343 int error;
1344
1345 if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) {
1346
1347 /*
1348 * Parse MADT LAPIC entries
1349 */
1350 error = acpi_parse_madt_lapic_entries();
1351 if (!error) {
1352 acpi_lapic = 1;
1353
1354 #ifdef CONFIG_X86_BIGSMP
1355 generic_bigsmp_probe();
1356 #endif
1357 /*
1358 * Parse MADT IO-APIC entries
1359 */
1360 error = acpi_parse_madt_ioapic_entries();
1361 if (!error) {
1362 acpi_irq_model = ACPI_IRQ_MODEL_IOAPIC;
1363 acpi_ioapic = 1;
1364
1365 smp_found_config = 1;
1366 if (apic->setup_apic_routing)
1367 apic->setup_apic_routing();
1368 }
1369 }
1370 if (error == -EINVAL) {
1371 /*
1372 * Dell Precision Workstation 410, 610 come here.
1373 */
1374 printk(KERN_ERR PREFIX
1375 "Invalid BIOS MADT, disabling ACPI\n");
1376 disable_acpi();
1377 }
1378 } else {
1379 /*
1380 * ACPI found no MADT, and so ACPI wants UP PIC mode.
1381 * In the event an MPS table was found, forget it.
1382 * Boot with "acpi=off" to use MPS on such a system.
1383 */
1384 if (smp_found_config) {
1385 printk(KERN_WARNING PREFIX
1386 "No APIC-table, disabling MPS\n");
1387 smp_found_config = 0;
1388 }
1389 }
1390
1391 /*
1392 * ACPI supports both logical (e.g. Hyper-Threading) and physical
1393 * processors, where MPS only supports physical.
1394 */
1395 if (acpi_lapic && acpi_ioapic)
1396 printk(KERN_INFO "Using ACPI (MADT) for SMP configuration "
1397 "information\n");
1398 else if (acpi_lapic)
1399 printk(KERN_INFO "Using ACPI for processor (LAPIC) "
1400 "configuration information\n");
1401 #endif
1402 return;
1403 }
1404
1405 static int __init disable_acpi_irq(const struct dmi_system_id *d)
1406 {
1407 if (!acpi_force) {
1408 printk(KERN_NOTICE "%s detected: force use of acpi=noirq\n",
1409 d->ident);
1410 acpi_noirq_set();
1411 }
1412 return 0;
1413 }
1414
1415 static int __init disable_acpi_pci(const struct dmi_system_id *d)
1416 {
1417 if (!acpi_force) {
1418 printk(KERN_NOTICE "%s detected: force use of pci=noacpi\n",
1419 d->ident);
1420 acpi_disable_pci();
1421 }
1422 return 0;
1423 }
1424
1425 static int __init dmi_disable_acpi(const struct dmi_system_id *d)
1426 {
1427 if (!acpi_force) {
1428 printk(KERN_NOTICE "%s detected: acpi off\n", d->ident);
1429 disable_acpi();
1430 } else {
1431 printk(KERN_NOTICE
1432 "Warning: DMI blacklist says broken, but acpi forced\n");
1433 }
1434 return 0;
1435 }
1436
1437 /*
1438 * Limit ACPI to CPU enumeration for HT
1439 */
1440 static int __init force_acpi_ht(const struct dmi_system_id *d)
1441 {
1442 if (!acpi_force) {
1443 printk(KERN_NOTICE "%s detected: force use of acpi=ht\n",
1444 d->ident);
1445 disable_acpi();
1446 acpi_ht = 1;
1447 } else {
1448 printk(KERN_NOTICE
1449 "Warning: acpi=force overrules DMI blacklist: acpi=ht\n");
1450 }
1451 return 0;
1452 }
1453
1454 /*
1455 * Force ignoring BIOS IRQ0 pin2 override
1456 */
1457 static int __init dmi_ignore_irq0_timer_override(const struct dmi_system_id *d)
1458 {
1459 /*
1460 * The ati_ixp4x0_rev() early PCI quirk should have set
1461 * the acpi_skip_timer_override flag already:
1462 */
1463 if (!acpi_skip_timer_override) {
1464 WARN(1, KERN_ERR "ati_ixp4x0 quirk not complete.\n");
1465 pr_notice("%s detected: Ignoring BIOS IRQ0 pin2 override\n",
1466 d->ident);
1467 acpi_skip_timer_override = 1;
1468 }
1469 return 0;
1470 }
1471
1472 /*
1473 * If your system is blacklisted here, but you find that acpi=force
1474 * works for you, please contact acpi-devel@sourceforge.net
1475 */
1476 static struct dmi_system_id __initdata acpi_dmi_table[] = {
1477 /*
1478 * Boxes that need ACPI disabled
1479 */
1480 {
1481 .callback = dmi_disable_acpi,
1482 .ident = "IBM Thinkpad",
1483 .matches = {
1484 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1485 DMI_MATCH(DMI_BOARD_NAME, "2629H1G"),
1486 },
1487 },
1488
1489 /*
1490 * Boxes that need acpi=ht
1491 */
1492 {
1493 .callback = force_acpi_ht,
1494 .ident = "FSC Primergy T850",
1495 .matches = {
1496 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
1497 DMI_MATCH(DMI_PRODUCT_NAME, "PRIMERGY T850"),
1498 },
1499 },
1500 {
1501 .callback = force_acpi_ht,
1502 .ident = "HP VISUALIZE NT Workstation",
1503 .matches = {
1504 DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"),
1505 DMI_MATCH(DMI_PRODUCT_NAME, "HP VISUALIZE NT Workstation"),
1506 },
1507 },
1508 {
1509 .callback = force_acpi_ht,
1510 .ident = "Compaq Workstation W8000",
1511 .matches = {
1512 DMI_MATCH(DMI_SYS_VENDOR, "Compaq"),
1513 DMI_MATCH(DMI_PRODUCT_NAME, "Workstation W8000"),
1514 },
1515 },
1516 {
1517 .callback = force_acpi_ht,
1518 .ident = "ASUS P4B266",
1519 .matches = {
1520 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
1521 DMI_MATCH(DMI_BOARD_NAME, "P4B266"),
1522 },
1523 },
1524 {
1525 .callback = force_acpi_ht,
1526 .ident = "ASUS P2B-DS",
1527 .matches = {
1528 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
1529 DMI_MATCH(DMI_BOARD_NAME, "P2B-DS"),
1530 },
1531 },
1532 {
1533 .callback = force_acpi_ht,
1534 .ident = "ASUS CUR-DLS",
1535 .matches = {
1536 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
1537 DMI_MATCH(DMI_BOARD_NAME, "CUR-DLS"),
1538 },
1539 },
1540 {
1541 .callback = force_acpi_ht,
1542 .ident = "ABIT i440BX-W83977",
1543 .matches = {
1544 DMI_MATCH(DMI_BOARD_VENDOR, "ABIT <http://www.abit.com>"),
1545 DMI_MATCH(DMI_BOARD_NAME, "i440BX-W83977 (BP6)"),
1546 },
1547 },
1548 {
1549 .callback = force_acpi_ht,
1550 .ident = "IBM Bladecenter",
1551 .matches = {
1552 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1553 DMI_MATCH(DMI_BOARD_NAME, "IBM eServer BladeCenter HS20"),
1554 },
1555 },
1556 {
1557 .callback = force_acpi_ht,
1558 .ident = "IBM eServer xSeries 360",
1559 .matches = {
1560 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1561 DMI_MATCH(DMI_BOARD_NAME, "eServer xSeries 360"),
1562 },
1563 },
1564 {
1565 .callback = force_acpi_ht,
1566 .ident = "IBM eserver xSeries 330",
1567 .matches = {
1568 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1569 DMI_MATCH(DMI_BOARD_NAME, "eserver xSeries 330"),
1570 },
1571 },
1572 {
1573 .callback = force_acpi_ht,
1574 .ident = "IBM eserver xSeries 440",
1575 .matches = {
1576 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1577 DMI_MATCH(DMI_PRODUCT_NAME, "eserver xSeries 440"),
1578 },
1579 },
1580
1581 /*
1582 * Boxes that need ACPI PCI IRQ routing disabled
1583 */
1584 {
1585 .callback = disable_acpi_irq,
1586 .ident = "ASUS A7V",
1587 .matches = {
1588 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC"),
1589 DMI_MATCH(DMI_BOARD_NAME, "<A7V>"),
1590 /* newer BIOS, Revision 1011, does work */
1591 DMI_MATCH(DMI_BIOS_VERSION,
1592 "ASUS A7V ACPI BIOS Revision 1007"),
1593 },
1594 },
1595 {
1596 /*
1597 * Latest BIOS for IBM 600E (1.16) has bad pcinum
1598 * for LPC bridge, which is needed for the PCI
1599 * interrupt links to work. DSDT fix is in bug 5966.
1600 * 2645, 2646 model numbers are shared with 600/600E/600X
1601 */
1602 .callback = disable_acpi_irq,
1603 .ident = "IBM Thinkpad 600 Series 2645",
1604 .matches = {
1605 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1606 DMI_MATCH(DMI_BOARD_NAME, "2645"),
1607 },
1608 },
1609 {
1610 .callback = disable_acpi_irq,
1611 .ident = "IBM Thinkpad 600 Series 2646",
1612 .matches = {
1613 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1614 DMI_MATCH(DMI_BOARD_NAME, "2646"),
1615 },
1616 },
1617 /*
1618 * Boxes that need ACPI PCI IRQ routing and PCI scan disabled
1619 */
1620 { /* _BBN 0 bug */
1621 .callback = disable_acpi_pci,
1622 .ident = "ASUS PR-DLS",
1623 .matches = {
1624 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
1625 DMI_MATCH(DMI_BOARD_NAME, "PR-DLS"),
1626 DMI_MATCH(DMI_BIOS_VERSION,
1627 "ASUS PR-DLS ACPI BIOS Revision 1010"),
1628 DMI_MATCH(DMI_BIOS_DATE, "03/21/2003")
1629 },
1630 },
1631 {
1632 .callback = disable_acpi_pci,
1633 .ident = "Acer TravelMate 36x Laptop",
1634 .matches = {
1635 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
1636 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 360"),
1637 },
1638 },
1639 {}
1640 };
1641
1642 /* second table for DMI checks that should run after early-quirks */
1643 static struct dmi_system_id __initdata acpi_dmi_table_late[] = {
1644 /*
1645 * HP laptops which use a DSDT reporting as HP/SB400/10000,
1646 * which includes some code which overrides all temperature
1647 * trip points to 16C if the INTIN2 input of the I/O APIC
1648 * is enabled. This input is incorrectly designated the
1649 * ISA IRQ 0 via an interrupt source override even though
1650 * it is wired to the output of the master 8259A and INTIN0
1651 * is not connected at all. Force ignoring BIOS IRQ0 pin2
1652 * override in that cases.
1653 */
1654 {
1655 .callback = dmi_ignore_irq0_timer_override,
1656 .ident = "HP nx6115 laptop",
1657 .matches = {
1658 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1659 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6115"),
1660 },
1661 },
1662 {
1663 .callback = dmi_ignore_irq0_timer_override,
1664 .ident = "HP NX6125 laptop",
1665 .matches = {
1666 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1667 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6125"),
1668 },
1669 },
1670 {
1671 .callback = dmi_ignore_irq0_timer_override,
1672 .ident = "HP NX6325 laptop",
1673 .matches = {
1674 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1675 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6325"),
1676 },
1677 },
1678 {
1679 .callback = dmi_ignore_irq0_timer_override,
1680 .ident = "HP 6715b laptop",
1681 .matches = {
1682 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1683 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq 6715b"),
1684 },
1685 },
1686 {}
1687 };
1688
1689 /*
1690 * acpi_boot_table_init() and acpi_boot_init()
1691 * called from setup_arch(), always.
1692 * 1. checksums all tables
1693 * 2. enumerates lapics
1694 * 3. enumerates io-apics
1695 *
1696 * acpi_table_init() is separate to allow reading SRAT without
1697 * other side effects.
1698 *
1699 * side effects of acpi_boot_init:
1700 * acpi_lapic = 1 if LAPIC found
1701 * acpi_ioapic = 1 if IOAPIC found
1702 * if (acpi_lapic && acpi_ioapic) smp_found_config = 1;
1703 * if acpi_blacklisted() acpi_disabled = 1;
1704 * acpi_irq_model=...
1705 * ...
1706 *
1707 * return value: (currently ignored)
1708 * 0: success
1709 * !0: failure
1710 */
1711
1712 int __init acpi_boot_table_init(void)
1713 {
1714 int error;
1715
1716 dmi_check_system(acpi_dmi_table);
1717
1718 /*
1719 * If acpi_disabled, bail out
1720 * One exception: acpi=ht continues far enough to enumerate LAPICs
1721 */
1722 if (acpi_disabled && !acpi_ht)
1723 return 1;
1724
1725 /*
1726 * Initialize the ACPI boot-time table parser.
1727 */
1728 error = acpi_table_init();
1729 if (error) {
1730 disable_acpi();
1731 return error;
1732 }
1733
1734 acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf);
1735
1736 /*
1737 * blacklist may disable ACPI entirely
1738 */
1739 error = acpi_blacklisted();
1740 if (error) {
1741 if (acpi_force) {
1742 printk(KERN_WARNING PREFIX "acpi=force override\n");
1743 } else {
1744 printk(KERN_WARNING PREFIX "Disabling ACPI support\n");
1745 disable_acpi();
1746 return error;
1747 }
1748 }
1749
1750 return 0;
1751 }
1752
1753 int __init early_acpi_boot_init(void)
1754 {
1755 /*
1756 * If acpi_disabled, bail out
1757 * One exception: acpi=ht continues far enough to enumerate LAPICs
1758 */
1759 if (acpi_disabled && !acpi_ht)
1760 return 1;
1761
1762 /*
1763 * Process the Multiple APIC Description Table (MADT), if present
1764 */
1765 early_acpi_process_madt();
1766
1767 return 0;
1768 }
1769
1770 int __init acpi_boot_init(void)
1771 {
1772 /* those are executed after early-quirks are executed */
1773 dmi_check_system(acpi_dmi_table_late);
1774
1775 /*
1776 * If acpi_disabled, bail out
1777 * One exception: acpi=ht continues far enough to enumerate LAPICs
1778 */
1779 if (acpi_disabled && !acpi_ht)
1780 return 1;
1781
1782 acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf);
1783
1784 /*
1785 * set sci_int and PM timer address
1786 */
1787 acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt);
1788
1789 /*
1790 * Process the Multiple APIC Description Table (MADT), if present
1791 */
1792 acpi_process_madt();
1793
1794 acpi_table_parse(ACPI_SIG_HPET, acpi_parse_hpet);
1795
1796 return 0;
1797 }
1798
1799 static int __init parse_acpi(char *arg)
1800 {
1801 if (!arg)
1802 return -EINVAL;
1803
1804 /* "acpi=off" disables both ACPI table parsing and interpreter */
1805 if (strcmp(arg, "off") == 0) {
1806 disable_acpi();
1807 }
1808 /* acpi=force to over-ride black-list */
1809 else if (strcmp(arg, "force") == 0) {
1810 acpi_force = 1;
1811 acpi_ht = 1;
1812 acpi_disabled = 0;
1813 }
1814 /* acpi=strict disables out-of-spec workarounds */
1815 else if (strcmp(arg, "strict") == 0) {
1816 acpi_strict = 1;
1817 }
1818 /* Limit ACPI just to boot-time to enable HT */
1819 else if (strcmp(arg, "ht") == 0) {
1820 if (!acpi_force)
1821 disable_acpi();
1822 acpi_ht = 1;
1823 }
1824 /* acpi=rsdt use RSDT instead of XSDT */
1825 else if (strcmp(arg, "rsdt") == 0) {
1826 acpi_rsdt_forced = 1;
1827 }
1828 /* "acpi=noirq" disables ACPI interrupt routing */
1829 else if (strcmp(arg, "noirq") == 0) {
1830 acpi_noirq_set();
1831 } else {
1832 /* Core will printk when we return error. */
1833 return -EINVAL;
1834 }
1835 return 0;
1836 }
1837 early_param("acpi", parse_acpi);
1838
1839 /* FIXME: Using pci= for an ACPI parameter is a travesty. */
1840 static int __init parse_pci(char *arg)
1841 {
1842 if (arg && strcmp(arg, "noacpi") == 0)
1843 acpi_disable_pci();
1844 return 0;
1845 }
1846 early_param("pci", parse_pci);
1847
1848 int __init acpi_mps_check(void)
1849 {
1850 #if defined(CONFIG_X86_LOCAL_APIC) && !defined(CONFIG_X86_MPPARSE)
1851 /* mptable code is not built-in*/
1852 if (acpi_disabled || acpi_noirq) {
1853 printk(KERN_WARNING "MPS support code is not built-in.\n"
1854 "Using acpi=off or acpi=noirq or pci=noacpi "
1855 "may have problem\n");
1856 return 1;
1857 }
1858 #endif
1859 return 0;
1860 }
1861
1862 #ifdef CONFIG_X86_IO_APIC
1863 static int __init parse_acpi_skip_timer_override(char *arg)
1864 {
1865 acpi_skip_timer_override = 1;
1866 return 0;
1867 }
1868 early_param("acpi_skip_timer_override", parse_acpi_skip_timer_override);
1869
1870 static int __init parse_acpi_use_timer_override(char *arg)
1871 {
1872 acpi_use_timer_override = 1;
1873 return 0;
1874 }
1875 early_param("acpi_use_timer_override", parse_acpi_use_timer_override);
1876 #endif /* CONFIG_X86_IO_APIC */
1877
1878 static int __init setup_acpi_sci(char *s)
1879 {
1880 if (!s)
1881 return -EINVAL;
1882 if (!strcmp(s, "edge"))
1883 acpi_sci_flags = ACPI_MADT_TRIGGER_EDGE |
1884 (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK);
1885 else if (!strcmp(s, "level"))
1886 acpi_sci_flags = ACPI_MADT_TRIGGER_LEVEL |
1887 (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK);
1888 else if (!strcmp(s, "high"))
1889 acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_HIGH |
1890 (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK);
1891 else if (!strcmp(s, "low"))
1892 acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_LOW |
1893 (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK);
1894 else
1895 return -EINVAL;
1896 return 0;
1897 }
1898 early_param("acpi_sci", setup_acpi_sci);
1899
1900 int __acpi_acquire_global_lock(unsigned int *lock)
1901 {
1902 unsigned int old, new, val;
1903 do {
1904 old = *lock;
1905 new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1));
1906 val = cmpxchg(lock, old, new);
1907 } while (unlikely (val != old));
1908 return (new < 3) ? -1 : 0;
1909 }
1910
1911 int __acpi_release_global_lock(unsigned int *lock)
1912 {
1913 unsigned int old, new, val;
1914 do {
1915 old = *lock;
1916 new = old & ~0x3;
1917 val = cmpxchg(lock, old, new);
1918 } while (unlikely (val != old));
1919 return old & 0x1;
1920 }
Linux kernel - Deliverables
This page took 0.071948 seconds and 5 git commands to generate.