projects / deliverable / linux.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
x86: move mp_ioapic_routing to boot.c
[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/io.h>
41 #include <asm/mpspec.h>
42
43 #ifdef CONFIG_X86_LOCAL_APIC
44 # include <mach_apic.h>
45 #endif
46
47 static int __initdata acpi_force = 0;
48
49 #ifdef CONFIG_ACPI
50 int acpi_disabled = 0;
51 #else
52 int acpi_disabled = 1;
53 #endif
54 EXPORT_SYMBOL(acpi_disabled);
55
56 #ifdef CONFIG_X86_64
57
58 #include <asm/proto.h>
59 #include <asm/genapic.h>
60
61 #else /* X86 */
62
63 #ifdef CONFIG_X86_LOCAL_APIC
64 #include <mach_apic.h>
65 #include <mach_mpparse.h>
66 #endif /* CONFIG_X86_LOCAL_APIC */
67
68 #endif /* X86 */
69
70 #define BAD_MADT_ENTRY(entry, end) ( \
71 (!entry) || (unsigned long)entry + sizeof(*entry) > end || \
72 ((struct acpi_subtable_header *)entry)->length < sizeof(*entry))
73
74 #define PREFIX "ACPI: "
75
76 int acpi_noirq; /* skip ACPI IRQ initialization */
77 int acpi_pci_disabled; /* skip ACPI PCI scan and IRQ initialization */
78 EXPORT_SYMBOL(acpi_pci_disabled);
79 int acpi_ht __initdata = 1; /* enable HT */
80
81 int acpi_lapic;
82 int acpi_ioapic;
83 int acpi_strict;
84
85 u8 acpi_sci_flags __initdata;
86 int acpi_sci_override_gsi __initdata;
87 int acpi_skip_timer_override __initdata;
88 int acpi_use_timer_override __initdata;
89
90 #ifdef CONFIG_X86_LOCAL_APIC
91 static u64 acpi_lapic_addr __initdata = APIC_DEFAULT_PHYS_BASE;
92 #endif
93
94 #ifndef __HAVE_ARCH_CMPXCHG
95 #warning ACPI uses CMPXCHG, i486 and later hardware
96 #endif
97
98 /* --------------------------------------------------------------------------
99 Boot-time Configuration
100 -------------------------------------------------------------------------- */
101
102 /*
103 * The default interrupt routing model is PIC (8259). This gets
104 * overridden if IOAPICs are enumerated (below).
105 */
106 enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_PIC;
107
108 #ifdef CONFIG_X86_64
109
110 /* rely on all ACPI tables being in the direct mapping */
111 char *__init __acpi_map_table(unsigned long phys_addr, unsigned long size)
112 {
113 if (!phys_addr || !size)
114 return NULL;
115
116 if (phys_addr+size <= (max_pfn_mapped << PAGE_SHIFT) + PAGE_SIZE)
117 return __va(phys_addr);
118
119 return NULL;
120 }
121
122 #else
123
124 /*
125 * Temporarily use the virtual area starting from FIX_IO_APIC_BASE_END,
126 * to map the target physical address. The problem is that set_fixmap()
127 * provides a single page, and it is possible that the page is not
128 * sufficient.
129 * By using this area, we can map up to MAX_IO_APICS pages temporarily,
130 * i.e. until the next __va_range() call.
131 *
132 * Important Safety Note: The fixed I/O APIC page numbers are *subtracted*
133 * from the fixed base. That's why we start at FIX_IO_APIC_BASE_END and
134 * count idx down while incrementing the phys address.
135 */
136 char *__init __acpi_map_table(unsigned long phys, unsigned long size)
137 {
138 unsigned long base, offset, mapped_size;
139 int idx;
140
141 if (phys + size < 8 * 1024 * 1024)
142 return __va(phys);
143
144 offset = phys & (PAGE_SIZE - 1);
145 mapped_size = PAGE_SIZE - offset;
146 set_fixmap(FIX_ACPI_END, phys);
147 base = fix_to_virt(FIX_ACPI_END);
148
149 /*
150 * Most cases can be covered by the below.
151 */
152 idx = FIX_ACPI_END;
153 while (mapped_size < size) {
154 if (--idx < FIX_ACPI_BEGIN)
155 return NULL; /* cannot handle this */
156 phys += PAGE_SIZE;
157 set_fixmap(idx, phys);
158 mapped_size += PAGE_SIZE;
159 }
160
161 return ((unsigned char *)base + offset);
162 }
163 #endif
164
165 #ifdef CONFIG_PCI_MMCONFIG
166 /* The physical address of the MMCONFIG aperture. Set from ACPI tables. */
167 struct acpi_mcfg_allocation *pci_mmcfg_config;
168 int pci_mmcfg_config_num;
169
170 int __init acpi_parse_mcfg(struct acpi_table_header *header)
171 {
172 struct acpi_table_mcfg *mcfg;
173 unsigned long i;
174 int config_size;
175
176 if (!header)
177 return -EINVAL;
178
179 mcfg = (struct acpi_table_mcfg *)header;
180
181 /* how many config structures do we have */
182 pci_mmcfg_config_num = 0;
183 i = header->length - sizeof(struct acpi_table_mcfg);
184 while (i >= sizeof(struct acpi_mcfg_allocation)) {
185 ++pci_mmcfg_config_num;
186 i -= sizeof(struct acpi_mcfg_allocation);
187 };
188 if (pci_mmcfg_config_num == 0) {
189 printk(KERN_ERR PREFIX "MMCONFIG has no entries\n");
190 return -ENODEV;
191 }
192
193 config_size = pci_mmcfg_config_num * sizeof(*pci_mmcfg_config);
194 pci_mmcfg_config = kmalloc(config_size, GFP_KERNEL);
195 if (!pci_mmcfg_config) {
196 printk(KERN_WARNING PREFIX
197 "No memory for MCFG config tables\n");
198 return -ENOMEM;
199 }
200
201 memcpy(pci_mmcfg_config, &mcfg[1], config_size);
202 for (i = 0; i < pci_mmcfg_config_num; ++i) {
203 if (pci_mmcfg_config[i].address > 0xFFFFFFFF) {
204 printk(KERN_ERR PREFIX
205 "MMCONFIG not in low 4GB of memory\n");
206 kfree(pci_mmcfg_config);
207 pci_mmcfg_config_num = 0;
208 return -ENODEV;
209 }
210 }
211
212 return 0;
213 }
214 #endif /* CONFIG_PCI_MMCONFIG */
215
216 #ifdef CONFIG_X86_LOCAL_APIC
217 static int __init acpi_parse_madt(struct acpi_table_header *table)
218 {
219 struct acpi_table_madt *madt = NULL;
220
221 if (!cpu_has_apic)
222 return -EINVAL;
223
224 madt = (struct acpi_table_madt *)table;
225 if (!madt) {
226 printk(KERN_WARNING PREFIX "Unable to map MADT\n");
227 return -ENODEV;
228 }
229
230 if (madt->address) {
231 acpi_lapic_addr = (u64) madt->address;
232
233 printk(KERN_DEBUG PREFIX "Local APIC address 0x%08x\n",
234 madt->address);
235 }
236
237 acpi_madt_oem_check(madt->header.oem_id, madt->header.oem_table_id);
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 mp_register_lapic(processor->id, /* APIC ID */
262 processor->lapic_flags & ACPI_MADT_ENABLED); /* 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 mp_register_lapic((processor->id << 8) | processor->eid,/* APIC ID */
280 processor->lapic_flags & ACPI_MADT_ENABLED); /* 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_lapic_nmi(struct acpi_subtable_header * header, const unsigned long end)
303 {
304 struct acpi_madt_local_apic_nmi *lapic_nmi = NULL;
305
306 lapic_nmi = (struct acpi_madt_local_apic_nmi *)header;
307
308 if (BAD_MADT_ENTRY(lapic_nmi, end))
309 return -EINVAL;
310
311 acpi_table_print_madt_entry(header);
312
313 if (lapic_nmi->lint != 1)
314 printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n");
315
316 return 0;
317 }
318
319 #endif /*CONFIG_X86_LOCAL_APIC */
320
321 #ifdef CONFIG_X86_IO_APIC
322
323 struct mp_ioapic_routing mp_ioapic_routing[MAX_IO_APICS];
324
325 static int __init
326 acpi_parse_ioapic(struct acpi_subtable_header * header, const unsigned long end)
327 {
328 struct acpi_madt_io_apic *ioapic = NULL;
329
330 ioapic = (struct acpi_madt_io_apic *)header;
331
332 if (BAD_MADT_ENTRY(ioapic, end))
333 return -EINVAL;
334
335 acpi_table_print_madt_entry(header);
336
337 mp_register_ioapic(ioapic->id,
338 ioapic->address, ioapic->global_irq_base);
339
340 return 0;
341 }
342
343 /*
344 * Parse Interrupt Source Override for the ACPI SCI
345 */
346 static void __init acpi_sci_ioapic_setup(u32 gsi, u16 polarity, u16 trigger)
347 {
348 if (trigger == 0) /* compatible SCI trigger is level */
349 trigger = 3;
350
351 if (polarity == 0) /* compatible SCI polarity is low */
352 polarity = 3;
353
354 /* Command-line over-ride via acpi_sci= */
355 if (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK)
356 trigger = (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) >> 2;
357
358 if (acpi_sci_flags & ACPI_MADT_POLARITY_MASK)
359 polarity = acpi_sci_flags & ACPI_MADT_POLARITY_MASK;
360
361 /*
362 * mp_config_acpi_legacy_irqs() already setup IRQs < 16
363 * If GSI is < 16, this will update its flags,
364 * else it will create a new mp_irqs[] entry.
365 */
366 mp_override_legacy_irq(gsi, polarity, trigger, gsi);
367
368 /*
369 * stash over-ride to indicate we've been here
370 * and for later update of acpi_gbl_FADT
371 */
372 acpi_sci_override_gsi = gsi;
373 return;
374 }
375
376 static int __init
377 acpi_parse_int_src_ovr(struct acpi_subtable_header * header,
378 const unsigned long end)
379 {
380 struct acpi_madt_interrupt_override *intsrc = NULL;
381
382 intsrc = (struct acpi_madt_interrupt_override *)header;
383
384 if (BAD_MADT_ENTRY(intsrc, end))
385 return -EINVAL;
386
387 acpi_table_print_madt_entry(header);
388
389 if (intsrc->source_irq == acpi_gbl_FADT.sci_interrupt) {
390 acpi_sci_ioapic_setup(intsrc->global_irq,
391 intsrc->inti_flags & ACPI_MADT_POLARITY_MASK,
392 (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2);
393 return 0;
394 }
395
396 if (acpi_skip_timer_override &&
397 intsrc->source_irq == 0 && intsrc->global_irq == 2) {
398 printk(PREFIX "BIOS IRQ0 pin2 override ignored.\n");
399 return 0;
400 }
401
402 mp_override_legacy_irq(intsrc->source_irq,
403 intsrc->inti_flags & ACPI_MADT_POLARITY_MASK,
404 (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2,
405 intsrc->global_irq);
406
407 return 0;
408 }
409
410 static int __init
411 acpi_parse_nmi_src(struct acpi_subtable_header * header, const unsigned long end)
412 {
413 struct acpi_madt_nmi_source *nmi_src = NULL;
414
415 nmi_src = (struct acpi_madt_nmi_source *)header;
416
417 if (BAD_MADT_ENTRY(nmi_src, end))
418 return -EINVAL;
419
420 acpi_table_print_madt_entry(header);
421
422 /* TBD: Support nimsrc entries? */
423
424 return 0;
425 }
426
427 #endif /* CONFIG_X86_IO_APIC */
428
429 /*
430 * acpi_pic_sci_set_trigger()
431 *
432 * use ELCR to set PIC-mode trigger type for SCI
433 *
434 * If a PIC-mode SCI is not recognized or gives spurious IRQ7's
435 * it may require Edge Trigger -- use "acpi_sci=edge"
436 *
437 * Port 0x4d0-4d1 are ECLR1 and ECLR2, the Edge/Level Control Registers
438 * for the 8259 PIC. bit[n] = 1 means irq[n] is Level, otherwise Edge.
439 * ECLR1 is IRQs 0-7 (IRQ 0, 1, 2 must be 0)
440 * ECLR2 is IRQs 8-15 (IRQ 8, 13 must be 0)
441 */
442
443 void __init acpi_pic_sci_set_trigger(unsigned int irq, u16 trigger)
444 {
445 unsigned int mask = 1 << irq;
446 unsigned int old, new;
447
448 /* Real old ELCR mask */
449 old = inb(0x4d0) | (inb(0x4d1) << 8);
450
451 /*
452 * If we use ACPI to set PCI IRQs, then we should clear ELCR
453 * since we will set it correctly as we enable the PCI irq
454 * routing.
455 */
456 new = acpi_noirq ? old : 0;
457
458 /*
459 * Update SCI information in the ELCR, it isn't in the PCI
460 * routing tables..
461 */
462 switch (trigger) {
463 case 1: /* Edge - clear */
464 new &= ~mask;
465 break;
466 case 3: /* Level - set */
467 new |= mask;
468 break;
469 }
470
471 if (old == new)
472 return;
473
474 printk(PREFIX "setting ELCR to %04x (from %04x)\n", new, old);
475 outb(new, 0x4d0);
476 outb(new >> 8, 0x4d1);
477 }
478
479 int acpi_gsi_to_irq(u32 gsi, unsigned int *irq)
480 {
481 *irq = gsi;
482 return 0;
483 }
484
485 /*
486 * success: return IRQ number (>=0)
487 * failure: return < 0
488 */
489 int acpi_register_gsi(u32 gsi, int triggering, int polarity)
490 {
491 unsigned int irq;
492 unsigned int plat_gsi = gsi;
493
494 #ifdef CONFIG_PCI
495 /*
496 * Make sure all (legacy) PCI IRQs are set as level-triggered.
497 */
498 if (acpi_irq_model == ACPI_IRQ_MODEL_PIC) {
499 extern void eisa_set_level_irq(unsigned int irq);
500
501 if (triggering == ACPI_LEVEL_SENSITIVE)
502 eisa_set_level_irq(gsi);
503 }
504 #endif
505
506 #ifdef CONFIG_X86_IO_APIC
507 if (acpi_irq_model == ACPI_IRQ_MODEL_IOAPIC) {
508 plat_gsi = mp_register_gsi(gsi, triggering, polarity);
509 }
510 #endif
511 acpi_gsi_to_irq(plat_gsi, &irq);
512 return irq;
513 }
514
515 /*
516 * ACPI based hotplug support for CPU
517 */
518 #ifdef CONFIG_ACPI_HOTPLUG_CPU
519
520 static int __cpuinit _acpi_map_lsapic(acpi_handle handle, int *pcpu)
521 {
522 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
523 union acpi_object *obj;
524 struct acpi_madt_local_apic *lapic;
525 cpumask_t tmp_map, new_map;
526 u8 physid;
527 int cpu;
528
529 if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer)))
530 return -EINVAL;
531
532 if (!buffer.length || !buffer.pointer)
533 return -EINVAL;
534
535 obj = buffer.pointer;
536 if (obj->type != ACPI_TYPE_BUFFER ||
537 obj->buffer.length < sizeof(*lapic)) {
538 kfree(buffer.pointer);
539 return -EINVAL;
540 }
541
542 lapic = (struct acpi_madt_local_apic *)obj->buffer.pointer;
543
544 if (lapic->header.type != ACPI_MADT_TYPE_LOCAL_APIC ||
545 !(lapic->lapic_flags & ACPI_MADT_ENABLED)) {
546 kfree(buffer.pointer);
547 return -EINVAL;
548 }
549
550 physid = lapic->id;
551
552 kfree(buffer.pointer);
553 buffer.length = ACPI_ALLOCATE_BUFFER;
554 buffer.pointer = NULL;
555
556 tmp_map = cpu_present_map;
557 mp_register_lapic(physid, lapic->lapic_flags & ACPI_MADT_ENABLED);
558
559 /*
560 * If mp_register_lapic successfully generates a new logical cpu
561 * number, then the following will get us exactly what was mapped
562 */
563 cpus_andnot(new_map, cpu_present_map, tmp_map);
564 if (cpus_empty(new_map)) {
565 printk ("Unable to map lapic to logical cpu number\n");
566 return -EINVAL;
567 }
568
569 cpu = first_cpu(new_map);
570
571 *pcpu = cpu;
572 return 0;
573 }
574
575 /* wrapper to silence section mismatch warning */
576 int __ref acpi_map_lsapic(acpi_handle handle, int *pcpu)
577 {
578 return _acpi_map_lsapic(handle, pcpu);
579 }
580 EXPORT_SYMBOL(acpi_map_lsapic);
581
582 int acpi_unmap_lsapic(int cpu)
583 {
584 per_cpu(x86_cpu_to_apicid, cpu) = -1;
585 cpu_clear(cpu, cpu_present_map);
586 num_processors--;
587
588 return (0);
589 }
590
591 EXPORT_SYMBOL(acpi_unmap_lsapic);
592 #endif /* CONFIG_ACPI_HOTPLUG_CPU */
593
594 int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base)
595 {
596 /* TBD */
597 return -EINVAL;
598 }
599
600 EXPORT_SYMBOL(acpi_register_ioapic);
601
602 int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base)
603 {
604 /* TBD */
605 return -EINVAL;
606 }
607
608 EXPORT_SYMBOL(acpi_unregister_ioapic);
609
610 static int __init acpi_parse_sbf(struct acpi_table_header *table)
611 {
612 struct acpi_table_boot *sb;
613
614 sb = (struct acpi_table_boot *)table;
615 if (!sb) {
616 printk(KERN_WARNING PREFIX "Unable to map SBF\n");
617 return -ENODEV;
618 }
619
620 sbf_port = sb->cmos_index; /* Save CMOS port */
621
622 return 0;
623 }
624
625 #ifdef CONFIG_HPET_TIMER
626 #include <asm/hpet.h>
627
628 static struct __initdata resource *hpet_res;
629
630 static int __init acpi_parse_hpet(struct acpi_table_header *table)
631 {
632 struct acpi_table_hpet *hpet_tbl;
633
634 hpet_tbl = (struct acpi_table_hpet *)table;
635 if (!hpet_tbl) {
636 printk(KERN_WARNING PREFIX "Unable to map HPET\n");
637 return -ENODEV;
638 }
639
640 if (hpet_tbl->address.space_id != ACPI_SPACE_MEM) {
641 printk(KERN_WARNING PREFIX "HPET timers must be located in "
642 "memory.\n");
643 return -1;
644 }
645
646 hpet_address = hpet_tbl->address.address;
647
648 /*
649 * Some broken BIOSes advertise HPET at 0x0. We really do not
650 * want to allocate a resource there.
651 */
652 if (!hpet_address) {
653 printk(KERN_WARNING PREFIX
654 "HPET id: %#x base: %#lx is invalid\n",
655 hpet_tbl->id, hpet_address);
656 return 0;
657 }
658 #ifdef CONFIG_X86_64
659 /*
660 * Some even more broken BIOSes advertise HPET at
661 * 0xfed0000000000000 instead of 0xfed00000. Fix it up and add
662 * some noise:
663 */
664 if (hpet_address == 0xfed0000000000000UL) {
665 if (!hpet_force_user) {
666 printk(KERN_WARNING PREFIX "HPET id: %#x "
667 "base: 0xfed0000000000000 is bogus\n "
668 "try hpet=force on the kernel command line to "
669 "fix it up to 0xfed00000.\n", hpet_tbl->id);
670 hpet_address = 0;
671 return 0;
672 }
673 printk(KERN_WARNING PREFIX
674 "HPET id: %#x base: 0xfed0000000000000 fixed up "
675 "to 0xfed00000.\n", hpet_tbl->id);
676 hpet_address >>= 32;
677 }
678 #endif
679 printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n",
680 hpet_tbl->id, hpet_address);
681
682 /*
683 * Allocate and initialize the HPET firmware resource for adding into
684 * the resource tree during the lateinit timeframe.
685 */
686 #define HPET_RESOURCE_NAME_SIZE 9
687 hpet_res = alloc_bootmem(sizeof(*hpet_res) + HPET_RESOURCE_NAME_SIZE);
688
689 if (!hpet_res)
690 return 0;
691
692 memset(hpet_res, 0, sizeof(*hpet_res));
693 hpet_res->name = (void *)&hpet_res[1];
694 hpet_res->flags = IORESOURCE_MEM;
695 snprintf((char *)hpet_res->name, HPET_RESOURCE_NAME_SIZE, "HPET %u",
696 hpet_tbl->sequence);
697
698 hpet_res->start = hpet_address;
699 hpet_res->end = hpet_address + (1 * 1024) - 1;
700
701 return 0;
702 }
703
704 /*
705 * hpet_insert_resource inserts the HPET resources used into the resource
706 * tree.
707 */
708 static __init int hpet_insert_resource(void)
709 {
710 if (!hpet_res)
711 return 1;
712
713 return insert_resource(&iomem_resource, hpet_res);
714 }
715
716 late_initcall(hpet_insert_resource);
717
718 #else
719 #define acpi_parse_hpet NULL
720 #endif
721
722 static int __init acpi_parse_fadt(struct acpi_table_header *table)
723 {
724
725 #ifdef CONFIG_X86_PM_TIMER
726 /* detect the location of the ACPI PM Timer */
727 if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID) {
728 /* FADT rev. 2 */
729 if (acpi_gbl_FADT.xpm_timer_block.space_id !=
730 ACPI_ADR_SPACE_SYSTEM_IO)
731 return 0;
732
733 pmtmr_ioport = acpi_gbl_FADT.xpm_timer_block.address;
734 /*
735 * "X" fields are optional extensions to the original V1.0
736 * fields, so we must selectively expand V1.0 fields if the
737 * corresponding X field is zero.
738 */
739 if (!pmtmr_ioport)
740 pmtmr_ioport = acpi_gbl_FADT.pm_timer_block;
741 } else {
742 /* FADT rev. 1 */
743 pmtmr_ioport = acpi_gbl_FADT.pm_timer_block;
744 }
745 if (pmtmr_ioport)
746 printk(KERN_INFO PREFIX "PM-Timer IO Port: %#x\n",
747 pmtmr_ioport);
748 #endif
749 return 0;
750 }
751
752 #ifdef CONFIG_X86_LOCAL_APIC
753 /*
754 * Parse LAPIC entries in MADT
755 * returns 0 on success, < 0 on error
756 */
757 static int __init acpi_parse_madt_lapic_entries(void)
758 {
759 int count;
760
761 if (!cpu_has_apic)
762 return -ENODEV;
763
764 /*
765 * Note that the LAPIC address is obtained from the MADT (32-bit value)
766 * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value).
767 */
768
769 count =
770 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE,
771 acpi_parse_lapic_addr_ovr, 0);
772 if (count < 0) {
773 printk(KERN_ERR PREFIX
774 "Error parsing LAPIC address override entry\n");
775 return count;
776 }
777
778 mp_register_lapic_address(acpi_lapic_addr);
779
780 count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_SAPIC,
781 acpi_parse_sapic, MAX_APICS);
782
783 if (!count)
784 count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC,
785 acpi_parse_lapic, MAX_APICS);
786 if (!count) {
787 printk(KERN_ERR PREFIX "No LAPIC entries present\n");
788 /* TBD: Cleanup to allow fallback to MPS */
789 return -ENODEV;
790 } else if (count < 0) {
791 printk(KERN_ERR PREFIX "Error parsing LAPIC entry\n");
792 /* TBD: Cleanup to allow fallback to MPS */
793 return count;
794 }
795
796 count =
797 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI, acpi_parse_lapic_nmi, 0);
798 if (count < 0) {
799 printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n");
800 /* TBD: Cleanup to allow fallback to MPS */
801 return count;
802 }
803 return 0;
804 }
805 #endif /* CONFIG_X86_LOCAL_APIC */
806
807 #ifdef CONFIG_X86_IO_APIC
808 /*
809 * Parse IOAPIC related entries in MADT
810 * returns 0 on success, < 0 on error
811 */
812 static int __init acpi_parse_madt_ioapic_entries(void)
813 {
814 int count;
815
816 /*
817 * ACPI interpreter is required to complete interrupt setup,
818 * so if it is off, don't enumerate the io-apics with ACPI.
819 * If MPS is present, it will handle them,
820 * otherwise the system will stay in PIC mode
821 */
822 if (acpi_disabled || acpi_noirq) {
823 return -ENODEV;
824 }
825
826 if (!cpu_has_apic)
827 return -ENODEV;
828
829 /*
830 * if "noapic" boot option, don't look for IO-APICs
831 */
832 if (skip_ioapic_setup) {
833 printk(KERN_INFO PREFIX "Skipping IOAPIC probe "
834 "due to 'noapic' option.\n");
835 return -ENODEV;
836 }
837
838 count =
839 acpi_table_parse_madt(ACPI_MADT_TYPE_IO_APIC, acpi_parse_ioapic,
840 MAX_IO_APICS);
841 if (!count) {
842 printk(KERN_ERR PREFIX "No IOAPIC entries present\n");
843 return -ENODEV;
844 } else if (count < 0) {
845 printk(KERN_ERR PREFIX "Error parsing IOAPIC entry\n");
846 return count;
847 }
848
849 count =
850 acpi_table_parse_madt(ACPI_MADT_TYPE_INTERRUPT_OVERRIDE, acpi_parse_int_src_ovr,
851 NR_IRQ_VECTORS);
852 if (count < 0) {
853 printk(KERN_ERR PREFIX
854 "Error parsing interrupt source overrides entry\n");
855 /* TBD: Cleanup to allow fallback to MPS */
856 return count;
857 }
858
859 /*
860 * If BIOS did not supply an INT_SRC_OVR for the SCI
861 * pretend we got one so we can set the SCI flags.
862 */
863 if (!acpi_sci_override_gsi)
864 acpi_sci_ioapic_setup(acpi_gbl_FADT.sci_interrupt, 0, 0);
865
866 /* Fill in identity legacy mapings where no override */
867 mp_config_acpi_legacy_irqs();
868
869 count =
870 acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE, acpi_parse_nmi_src,
871 NR_IRQ_VECTORS);
872 if (count < 0) {
873 printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n");
874 /* TBD: Cleanup to allow fallback to MPS */
875 return count;
876 }
877
878 return 0;
879 }
880 #else
881 static inline int acpi_parse_madt_ioapic_entries(void)
882 {
883 return -1;
884 }
885 #endif /* !CONFIG_X86_IO_APIC */
886
887 static void __init acpi_process_madt(void)
888 {
889 #ifdef CONFIG_X86_LOCAL_APIC
890 int error;
891
892 if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) {
893
894 /*
895 * Parse MADT LAPIC entries
896 */
897 error = acpi_parse_madt_lapic_entries();
898 if (!error) {
899 acpi_lapic = 1;
900
901 #ifdef CONFIG_X86_GENERICARCH
902 generic_bigsmp_probe();
903 #endif
904 /*
905 * Parse MADT IO-APIC entries
906 */
907 error = acpi_parse_madt_ioapic_entries();
908 if (!error) {
909 acpi_irq_model = ACPI_IRQ_MODEL_IOAPIC;
910 acpi_irq_balance_set(NULL);
911 acpi_ioapic = 1;
912
913 smp_found_config = 1;
914 setup_apic_routing();
915 }
916 }
917 if (error == -EINVAL) {
918 /*
919 * Dell Precision Workstation 410, 610 come here.
920 */
921 printk(KERN_ERR PREFIX
922 "Invalid BIOS MADT, disabling ACPI\n");
923 disable_acpi();
924 }
925 }
926 #endif
927 return;
928 }
929
930 #ifdef __i386__
931
932 static int __init disable_acpi_irq(const struct dmi_system_id *d)
933 {
934 if (!acpi_force) {
935 printk(KERN_NOTICE "%s detected: force use of acpi=noirq\n",
936 d->ident);
937 acpi_noirq_set();
938 }
939 return 0;
940 }
941
942 static int __init disable_acpi_pci(const struct dmi_system_id *d)
943 {
944 if (!acpi_force) {
945 printk(KERN_NOTICE "%s detected: force use of pci=noacpi\n",
946 d->ident);
947 acpi_disable_pci();
948 }
949 return 0;
950 }
951
952 static int __init dmi_disable_acpi(const struct dmi_system_id *d)
953 {
954 if (!acpi_force) {
955 printk(KERN_NOTICE "%s detected: acpi off\n", d->ident);
956 disable_acpi();
957 } else {
958 printk(KERN_NOTICE
959 "Warning: DMI blacklist says broken, but acpi forced\n");
960 }
961 return 0;
962 }
963
964 /*
965 * Limit ACPI to CPU enumeration for HT
966 */
967 static int __init force_acpi_ht(const struct dmi_system_id *d)
968 {
969 if (!acpi_force) {
970 printk(KERN_NOTICE "%s detected: force use of acpi=ht\n",
971 d->ident);
972 disable_acpi();
973 acpi_ht = 1;
974 } else {
975 printk(KERN_NOTICE
976 "Warning: acpi=force overrules DMI blacklist: acpi=ht\n");
977 }
978 return 0;
979 }
980
981 /*
982 * If your system is blacklisted here, but you find that acpi=force
983 * works for you, please contact acpi-devel@sourceforge.net
984 */
985 static struct dmi_system_id __initdata acpi_dmi_table[] = {
986 /*
987 * Boxes that need ACPI disabled
988 */
989 {
990 .callback = dmi_disable_acpi,
991 .ident = "IBM Thinkpad",
992 .matches = {
993 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
994 DMI_MATCH(DMI_BOARD_NAME, "2629H1G"),
995 },
996 },
997
998 /*
999 * Boxes that need acpi=ht
1000 */
1001 {
1002 .callback = force_acpi_ht,
1003 .ident = "FSC Primergy T850",
1004 .matches = {
1005 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
1006 DMI_MATCH(DMI_PRODUCT_NAME, "PRIMERGY T850"),
1007 },
1008 },
1009 {
1010 .callback = force_acpi_ht,
1011 .ident = "HP VISUALIZE NT Workstation",
1012 .matches = {
1013 DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"),
1014 DMI_MATCH(DMI_PRODUCT_NAME, "HP VISUALIZE NT Workstation"),
1015 },
1016 },
1017 {
1018 .callback = force_acpi_ht,
1019 .ident = "Compaq Workstation W8000",
1020 .matches = {
1021 DMI_MATCH(DMI_SYS_VENDOR, "Compaq"),
1022 DMI_MATCH(DMI_PRODUCT_NAME, "Workstation W8000"),
1023 },
1024 },
1025 {
1026 .callback = force_acpi_ht,
1027 .ident = "ASUS P4B266",
1028 .matches = {
1029 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
1030 DMI_MATCH(DMI_BOARD_NAME, "P4B266"),
1031 },
1032 },
1033 {
1034 .callback = force_acpi_ht,
1035 .ident = "ASUS P2B-DS",
1036 .matches = {
1037 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
1038 DMI_MATCH(DMI_BOARD_NAME, "P2B-DS"),
1039 },
1040 },
1041 {
1042 .callback = force_acpi_ht,
1043 .ident = "ASUS CUR-DLS",
1044 .matches = {
1045 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
1046 DMI_MATCH(DMI_BOARD_NAME, "CUR-DLS"),
1047 },
1048 },
1049 {
1050 .callback = force_acpi_ht,
1051 .ident = "ABIT i440BX-W83977",
1052 .matches = {
1053 DMI_MATCH(DMI_BOARD_VENDOR, "ABIT <http://www.abit.com>"),
1054 DMI_MATCH(DMI_BOARD_NAME, "i440BX-W83977 (BP6)"),
1055 },
1056 },
1057 {
1058 .callback = force_acpi_ht,
1059 .ident = "IBM Bladecenter",
1060 .matches = {
1061 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1062 DMI_MATCH(DMI_BOARD_NAME, "IBM eServer BladeCenter HS20"),
1063 },
1064 },
1065 {
1066 .callback = force_acpi_ht,
1067 .ident = "IBM eServer xSeries 360",
1068 .matches = {
1069 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1070 DMI_MATCH(DMI_BOARD_NAME, "eServer xSeries 360"),
1071 },
1072 },
1073 {
1074 .callback = force_acpi_ht,
1075 .ident = "IBM eserver xSeries 330",
1076 .matches = {
1077 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1078 DMI_MATCH(DMI_BOARD_NAME, "eserver xSeries 330"),
1079 },
1080 },
1081 {
1082 .callback = force_acpi_ht,
1083 .ident = "IBM eserver xSeries 440",
1084 .matches = {
1085 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1086 DMI_MATCH(DMI_PRODUCT_NAME, "eserver xSeries 440"),
1087 },
1088 },
1089
1090 /*
1091 * Boxes that need ACPI PCI IRQ routing disabled
1092 */
1093 {
1094 .callback = disable_acpi_irq,
1095 .ident = "ASUS A7V",
1096 .matches = {
1097 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC"),
1098 DMI_MATCH(DMI_BOARD_NAME, "<A7V>"),
1099 /* newer BIOS, Revision 1011, does work */
1100 DMI_MATCH(DMI_BIOS_VERSION,
1101 "ASUS A7V ACPI BIOS Revision 1007"),
1102 },
1103 },
1104 {
1105 /*
1106 * Latest BIOS for IBM 600E (1.16) has bad pcinum
1107 * for LPC bridge, which is needed for the PCI
1108 * interrupt links to work. DSDT fix is in bug 5966.
1109 * 2645, 2646 model numbers are shared with 600/600E/600X
1110 */
1111 .callback = disable_acpi_irq,
1112 .ident = "IBM Thinkpad 600 Series 2645",
1113 .matches = {
1114 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1115 DMI_MATCH(DMI_BOARD_NAME, "2645"),
1116 },
1117 },
1118 {
1119 .callback = disable_acpi_irq,
1120 .ident = "IBM Thinkpad 600 Series 2646",
1121 .matches = {
1122 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1123 DMI_MATCH(DMI_BOARD_NAME, "2646"),
1124 },
1125 },
1126 /*
1127 * Boxes that need ACPI PCI IRQ routing and PCI scan disabled
1128 */
1129 { /* _BBN 0 bug */
1130 .callback = disable_acpi_pci,
1131 .ident = "ASUS PR-DLS",
1132 .matches = {
1133 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
1134 DMI_MATCH(DMI_BOARD_NAME, "PR-DLS"),
1135 DMI_MATCH(DMI_BIOS_VERSION,
1136 "ASUS PR-DLS ACPI BIOS Revision 1010"),
1137 DMI_MATCH(DMI_BIOS_DATE, "03/21/2003")
1138 },
1139 },
1140 {
1141 .callback = disable_acpi_pci,
1142 .ident = "Acer TravelMate 36x Laptop",
1143 .matches = {
1144 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
1145 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 360"),
1146 },
1147 },
1148 {}
1149 };
1150
1151 #endif /* __i386__ */
1152
1153 /*
1154 * acpi_boot_table_init() and acpi_boot_init()
1155 * called from setup_arch(), always.
1156 * 1. checksums all tables
1157 * 2. enumerates lapics
1158 * 3. enumerates io-apics
1159 *
1160 * acpi_table_init() is separate to allow reading SRAT without
1161 * other side effects.
1162 *
1163 * side effects of acpi_boot_init:
1164 * acpi_lapic = 1 if LAPIC found
1165 * acpi_ioapic = 1 if IOAPIC found
1166 * if (acpi_lapic && acpi_ioapic) smp_found_config = 1;
1167 * if acpi_blacklisted() acpi_disabled = 1;
1168 * acpi_irq_model=...
1169 * ...
1170 *
1171 * return value: (currently ignored)
1172 * 0: success
1173 * !0: failure
1174 */
1175
1176 int __init acpi_boot_table_init(void)
1177 {
1178 int error;
1179
1180 #ifdef __i386__
1181 dmi_check_system(acpi_dmi_table);
1182 #endif
1183
1184 /*
1185 * If acpi_disabled, bail out
1186 * One exception: acpi=ht continues far enough to enumerate LAPICs
1187 */
1188 if (acpi_disabled && !acpi_ht)
1189 return 1;
1190
1191 /*
1192 * Initialize the ACPI boot-time table parser.
1193 */
1194 error = acpi_table_init();
1195 if (error) {
1196 disable_acpi();
1197 return error;
1198 }
1199
1200 acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf);
1201
1202 /*
1203 * blacklist may disable ACPI entirely
1204 */
1205 error = acpi_blacklisted();
1206 if (error) {
1207 if (acpi_force) {
1208 printk(KERN_WARNING PREFIX "acpi=force override\n");
1209 } else {
1210 printk(KERN_WARNING PREFIX "Disabling ACPI support\n");
1211 disable_acpi();
1212 return error;
1213 }
1214 }
1215
1216 return 0;
1217 }
1218
1219 int __init acpi_boot_init(void)
1220 {
1221 /*
1222 * If acpi_disabled, bail out
1223 * One exception: acpi=ht continues far enough to enumerate LAPICs
1224 */
1225 if (acpi_disabled && !acpi_ht)
1226 return 1;
1227
1228 acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf);
1229
1230 /*
1231 * set sci_int and PM timer address
1232 */
1233 acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt);
1234
1235 /*
1236 * Process the Multiple APIC Description Table (MADT), if present
1237 */
1238 acpi_process_madt();
1239
1240 acpi_table_parse(ACPI_SIG_HPET, acpi_parse_hpet);
1241
1242 return 0;
1243 }
1244
1245 static int __init parse_acpi(char *arg)
1246 {
1247 if (!arg)
1248 return -EINVAL;
1249
1250 /* "acpi=off" disables both ACPI table parsing and interpreter */
1251 if (strcmp(arg, "off") == 0) {
1252 disable_acpi();
1253 }
1254 /* acpi=force to over-ride black-list */
1255 else if (strcmp(arg, "force") == 0) {
1256 acpi_force = 1;
1257 acpi_ht = 1;
1258 acpi_disabled = 0;
1259 }
1260 /* acpi=strict disables out-of-spec workarounds */
1261 else if (strcmp(arg, "strict") == 0) {
1262 acpi_strict = 1;
1263 }
1264 /* Limit ACPI just to boot-time to enable HT */
1265 else if (strcmp(arg, "ht") == 0) {
1266 if (!acpi_force)
1267 disable_acpi();
1268 acpi_ht = 1;
1269 }
1270 /* "acpi=noirq" disables ACPI interrupt routing */
1271 else if (strcmp(arg, "noirq") == 0) {
1272 acpi_noirq_set();
1273 } else {
1274 /* Core will printk when we return error. */
1275 return -EINVAL;
1276 }
1277 return 0;
1278 }
1279 early_param("acpi", parse_acpi);
1280
1281 /* FIXME: Using pci= for an ACPI parameter is a travesty. */
1282 static int __init parse_pci(char *arg)
1283 {
1284 if (arg && strcmp(arg, "noacpi") == 0)
1285 acpi_disable_pci();
1286 return 0;
1287 }
1288 early_param("pci", parse_pci);
1289
1290 #ifdef CONFIG_X86_IO_APIC
1291 static int __init parse_acpi_skip_timer_override(char *arg)
1292 {
1293 acpi_skip_timer_override = 1;
1294 return 0;
1295 }
1296 early_param("acpi_skip_timer_override", parse_acpi_skip_timer_override);
1297
1298 static int __init parse_acpi_use_timer_override(char *arg)
1299 {
1300 acpi_use_timer_override = 1;
1301 return 0;
1302 }
1303 early_param("acpi_use_timer_override", parse_acpi_use_timer_override);
1304 #endif /* CONFIG_X86_IO_APIC */
1305
1306 static int __init setup_acpi_sci(char *s)
1307 {
1308 if (!s)
1309 return -EINVAL;
1310 if (!strcmp(s, "edge"))
1311 acpi_sci_flags = ACPI_MADT_TRIGGER_EDGE |
1312 (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK);
1313 else if (!strcmp(s, "level"))
1314 acpi_sci_flags = ACPI_MADT_TRIGGER_LEVEL |
1315 (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK);
1316 else if (!strcmp(s, "high"))
1317 acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_HIGH |
1318 (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK);
1319 else if (!strcmp(s, "low"))
1320 acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_LOW |
1321 (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK);
1322 else
1323 return -EINVAL;
1324 return 0;
1325 }
1326 early_param("acpi_sci", setup_acpi_sci);
1327
1328 int __acpi_acquire_global_lock(unsigned int *lock)
1329 {
1330 unsigned int old, new, val;
1331 do {
1332 old = *lock;
1333 new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1));
1334 val = cmpxchg(lock, old, new);
1335 } while (unlikely (val != old));
1336 return (new < 3) ? -1 : 0;
1337 }
1338
1339 int __acpi_release_global_lock(unsigned int *lock)
1340 {
1341 unsigned int old, new, val;
1342 do {
1343 old = *lock;
1344 new = old & ~0x3;
1345 val = cmpxchg(lock, old, new);
1346 } while (unlikely (val != old));
1347 return old & 0x1;
1348 }
Linux kernel - Deliverables
This page took 0.070988 seconds and 5 git commands to generate.