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x86: remove mach_apic.h
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / arch / x86 / kernel / acpi / boot.c
1 /*
2 * boot.c - Architecture-Specific Low-Level ACPI Boot Support
3 *
4 * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
5 * Copyright (C) 2001 Jun Nakajima <jun.nakajima@intel.com>
6 *
7 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 *
23 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
24 */
25
26 #include <linux/init.h>
27 #include <linux/acpi.h>
28 #include <linux/acpi_pmtmr.h>
29 #include <linux/efi.h>
30 #include <linux/cpumask.h>
31 #include <linux/module.h>
32 #include <linux/dmi.h>
33 #include <linux/irq.h>
34 #include <linux/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/genapic.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 unsigned long base, offset, mapped_size;
112 int idx;
113
114 if (!phys || !size)
115 return NULL;
116
117 if (phys+size <= (max_low_pfn_mapped << PAGE_SHIFT))
118 return __va(phys);
119
120 offset = phys & (PAGE_SIZE - 1);
121 mapped_size = PAGE_SIZE - offset;
122 clear_fixmap(FIX_ACPI_END);
123 set_fixmap(FIX_ACPI_END, phys);
124 base = fix_to_virt(FIX_ACPI_END);
125
126 /*
127 * Most cases can be covered by the below.
128 */
129 idx = FIX_ACPI_END;
130 while (mapped_size < size) {
131 if (--idx < FIX_ACPI_BEGIN)
132 return NULL; /* cannot handle this */
133 phys += PAGE_SIZE;
134 clear_fixmap(idx);
135 set_fixmap(idx, phys);
136 mapped_size += PAGE_SIZE;
137 }
138
139 return ((unsigned char *)base + offset);
140 }
141
142 #ifdef CONFIG_PCI_MMCONFIG
143
144 static int acpi_mcfg_64bit_base_addr __initdata = FALSE;
145
146 /* The physical address of the MMCONFIG aperture. Set from ACPI tables. */
147 struct acpi_mcfg_allocation *pci_mmcfg_config;
148 int pci_mmcfg_config_num;
149
150 static int __init acpi_mcfg_oem_check(struct acpi_table_mcfg *mcfg)
151 {
152 if (!strcmp(mcfg->header.oem_id, "SGI"))
153 acpi_mcfg_64bit_base_addr = TRUE;
154
155 return 0;
156 }
157
158 int __init acpi_parse_mcfg(struct acpi_table_header *header)
159 {
160 struct acpi_table_mcfg *mcfg;
161 unsigned long i;
162 int config_size;
163
164 if (!header)
165 return -EINVAL;
166
167 mcfg = (struct acpi_table_mcfg *)header;
168
169 /* how many config structures do we have */
170 pci_mmcfg_config_num = 0;
171 i = header->length - sizeof(struct acpi_table_mcfg);
172 while (i >= sizeof(struct acpi_mcfg_allocation)) {
173 ++pci_mmcfg_config_num;
174 i -= sizeof(struct acpi_mcfg_allocation);
175 };
176 if (pci_mmcfg_config_num == 0) {
177 printk(KERN_ERR PREFIX "MMCONFIG has no entries\n");
178 return -ENODEV;
179 }
180
181 config_size = pci_mmcfg_config_num * sizeof(*pci_mmcfg_config);
182 pci_mmcfg_config = kmalloc(config_size, GFP_KERNEL);
183 if (!pci_mmcfg_config) {
184 printk(KERN_WARNING PREFIX
185 "No memory for MCFG config tables\n");
186 return -ENOMEM;
187 }
188
189 memcpy(pci_mmcfg_config, &mcfg[1], config_size);
190
191 acpi_mcfg_oem_check(mcfg);
192
193 for (i = 0; i < pci_mmcfg_config_num; ++i) {
194 if ((pci_mmcfg_config[i].address > 0xFFFFFFFF) &&
195 !acpi_mcfg_64bit_base_addr) {
196 printk(KERN_ERR PREFIX
197 "MMCONFIG not in low 4GB of memory\n");
198 kfree(pci_mmcfg_config);
199 pci_mmcfg_config_num = 0;
200 return -ENODEV;
201 }
202 }
203
204 return 0;
205 }
206 #endif /* CONFIG_PCI_MMCONFIG */
207
208 #ifdef CONFIG_X86_LOCAL_APIC
209 static int __init acpi_parse_madt(struct acpi_table_header *table)
210 {
211 struct acpi_table_madt *madt = NULL;
212
213 if (!cpu_has_apic)
214 return -EINVAL;
215
216 madt = (struct acpi_table_madt *)table;
217 if (!madt) {
218 printk(KERN_WARNING PREFIX "Unable to map MADT\n");
219 return -ENODEV;
220 }
221
222 if (madt->address) {
223 acpi_lapic_addr = (u64) madt->address;
224
225 printk(KERN_DEBUG PREFIX "Local APIC address 0x%08x\n",
226 madt->address);
227 }
228
229 default_acpi_madt_oem_check(madt->header.oem_id,
230 madt->header.oem_table_id);
231
232 return 0;
233 }
234
235 static void __cpuinit acpi_register_lapic(int id, u8 enabled)
236 {
237 unsigned int ver = 0;
238
239 if (!enabled) {
240 ++disabled_cpus;
241 return;
242 }
243
244 if (boot_cpu_physical_apicid != -1U)
245 ver = apic_version[boot_cpu_physical_apicid];
246
247 generic_processor_info(id, ver);
248 }
249
250 static int __init
251 acpi_parse_lapic(struct acpi_subtable_header * header, const unsigned long end)
252 {
253 struct acpi_madt_local_apic *processor = NULL;
254
255 processor = (struct acpi_madt_local_apic *)header;
256
257 if (BAD_MADT_ENTRY(processor, end))
258 return -EINVAL;
259
260 acpi_table_print_madt_entry(header);
261
262 /*
263 * We need to register disabled CPU as well to permit
264 * counting disabled CPUs. This allows us to size
265 * cpus_possible_map more accurately, to permit
266 * to not preallocating memory for all NR_CPUS
267 * when we use CPU hotplug.
268 */
269 acpi_register_lapic(processor->id, /* APIC ID */
270 processor->lapic_flags & ACPI_MADT_ENABLED);
271
272 return 0;
273 }
274
275 static int __init
276 acpi_parse_sapic(struct acpi_subtable_header *header, const unsigned long end)
277 {
278 struct acpi_madt_local_sapic *processor = NULL;
279
280 processor = (struct acpi_madt_local_sapic *)header;
281
282 if (BAD_MADT_ENTRY(processor, end))
283 return -EINVAL;
284
285 acpi_table_print_madt_entry(header);
286
287 acpi_register_lapic((processor->id << 8) | processor->eid,/* APIC ID */
288 processor->lapic_flags & ACPI_MADT_ENABLED);
289
290 return 0;
291 }
292
293 static int __init
294 acpi_parse_lapic_addr_ovr(struct acpi_subtable_header * header,
295 const unsigned long end)
296 {
297 struct acpi_madt_local_apic_override *lapic_addr_ovr = NULL;
298
299 lapic_addr_ovr = (struct acpi_madt_local_apic_override *)header;
300
301 if (BAD_MADT_ENTRY(lapic_addr_ovr, end))
302 return -EINVAL;
303
304 acpi_lapic_addr = lapic_addr_ovr->address;
305
306 return 0;
307 }
308
309 static int __init
310 acpi_parse_lapic_nmi(struct acpi_subtable_header * header, const unsigned long end)
311 {
312 struct acpi_madt_local_apic_nmi *lapic_nmi = NULL;
313
314 lapic_nmi = (struct acpi_madt_local_apic_nmi *)header;
315
316 if (BAD_MADT_ENTRY(lapic_nmi, end))
317 return -EINVAL;
318
319 acpi_table_print_madt_entry(header);
320
321 if (lapic_nmi->lint != 1)
322 printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n");
323
324 return 0;
325 }
326
327 #endif /*CONFIG_X86_LOCAL_APIC */
328
329 #ifdef CONFIG_X86_IO_APIC
330
331 static int __init
332 acpi_parse_ioapic(struct acpi_subtable_header * header, const unsigned long end)
333 {
334 struct acpi_madt_io_apic *ioapic = NULL;
335
336 ioapic = (struct acpi_madt_io_apic *)header;
337
338 if (BAD_MADT_ENTRY(ioapic, end))
339 return -EINVAL;
340
341 acpi_table_print_madt_entry(header);
342
343 mp_register_ioapic(ioapic->id,
344 ioapic->address, ioapic->global_irq_base);
345
346 return 0;
347 }
348
349 /*
350 * Parse Interrupt Source Override for the ACPI SCI
351 */
352 static void __init acpi_sci_ioapic_setup(u32 gsi, u16 polarity, u16 trigger)
353 {
354 if (trigger == 0) /* compatible SCI trigger is level */
355 trigger = 3;
356
357 if (polarity == 0) /* compatible SCI polarity is low */
358 polarity = 3;
359
360 /* Command-line over-ride via acpi_sci= */
361 if (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK)
362 trigger = (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) >> 2;
363
364 if (acpi_sci_flags & ACPI_MADT_POLARITY_MASK)
365 polarity = acpi_sci_flags & ACPI_MADT_POLARITY_MASK;
366
367 /*
368 * mp_config_acpi_legacy_irqs() already setup IRQs < 16
369 * If GSI is < 16, this will update its flags,
370 * else it will create a new mp_irqs[] entry.
371 */
372 mp_override_legacy_irq(gsi, polarity, trigger, gsi);
373
374 /*
375 * stash over-ride to indicate we've been here
376 * and for later update of acpi_gbl_FADT
377 */
378 acpi_sci_override_gsi = gsi;
379 return;
380 }
381
382 static int __init
383 acpi_parse_int_src_ovr(struct acpi_subtable_header * header,
384 const unsigned long end)
385 {
386 struct acpi_madt_interrupt_override *intsrc = NULL;
387
388 intsrc = (struct acpi_madt_interrupt_override *)header;
389
390 if (BAD_MADT_ENTRY(intsrc, end))
391 return -EINVAL;
392
393 acpi_table_print_madt_entry(header);
394
395 if (intsrc->source_irq == acpi_gbl_FADT.sci_interrupt) {
396 acpi_sci_ioapic_setup(intsrc->global_irq,
397 intsrc->inti_flags & ACPI_MADT_POLARITY_MASK,
398 (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2);
399 return 0;
400 }
401
402 if (acpi_skip_timer_override &&
403 intsrc->source_irq == 0 && intsrc->global_irq == 2) {
404 printk(PREFIX "BIOS IRQ0 pin2 override ignored.\n");
405 return 0;
406 }
407
408 mp_override_legacy_irq(intsrc->source_irq,
409 intsrc->inti_flags & ACPI_MADT_POLARITY_MASK,
410 (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2,
411 intsrc->global_irq);
412
413 return 0;
414 }
415
416 static int __init
417 acpi_parse_nmi_src(struct acpi_subtable_header * header, const unsigned long end)
418 {
419 struct acpi_madt_nmi_source *nmi_src = NULL;
420
421 nmi_src = (struct acpi_madt_nmi_source *)header;
422
423 if (BAD_MADT_ENTRY(nmi_src, end))
424 return -EINVAL;
425
426 acpi_table_print_madt_entry(header);
427
428 /* TBD: Support nimsrc entries? */
429
430 return 0;
431 }
432
433 #endif /* CONFIG_X86_IO_APIC */
434
435 /*
436 * acpi_pic_sci_set_trigger()
437 *
438 * use ELCR to set PIC-mode trigger type for SCI
439 *
440 * If a PIC-mode SCI is not recognized or gives spurious IRQ7's
441 * it may require Edge Trigger -- use "acpi_sci=edge"
442 *
443 * Port 0x4d0-4d1 are ECLR1 and ECLR2, the Edge/Level Control Registers
444 * for the 8259 PIC. bit[n] = 1 means irq[n] is Level, otherwise Edge.
445 * ECLR1 is IRQs 0-7 (IRQ 0, 1, 2 must be 0)
446 * ECLR2 is IRQs 8-15 (IRQ 8, 13 must be 0)
447 */
448
449 void __init acpi_pic_sci_set_trigger(unsigned int irq, u16 trigger)
450 {
451 unsigned int mask = 1 << irq;
452 unsigned int old, new;
453
454 /* Real old ELCR mask */
455 old = inb(0x4d0) | (inb(0x4d1) << 8);
456
457 /*
458 * If we use ACPI to set PCI IRQs, then we should clear ELCR
459 * since we will set it correctly as we enable the PCI irq
460 * routing.
461 */
462 new = acpi_noirq ? old : 0;
463
464 /*
465 * Update SCI information in the ELCR, it isn't in the PCI
466 * routing tables..
467 */
468 switch (trigger) {
469 case 1: /* Edge - clear */
470 new &= ~mask;
471 break;
472 case 3: /* Level - set */
473 new |= mask;
474 break;
475 }
476
477 if (old == new)
478 return;
479
480 printk(PREFIX "setting ELCR to %04x (from %04x)\n", new, old);
481 outb(new, 0x4d0);
482 outb(new >> 8, 0x4d1);
483 }
484
485 int acpi_gsi_to_irq(u32 gsi, unsigned int *irq)
486 {
487 *irq = gsi;
488 return 0;
489 }
490
491 /*
492 * success: return IRQ number (>=0)
493 * failure: return < 0
494 */
495 int acpi_register_gsi(u32 gsi, int triggering, int polarity)
496 {
497 unsigned int irq;
498 unsigned int plat_gsi = gsi;
499
500 #ifdef CONFIG_PCI
501 /*
502 * Make sure all (legacy) PCI IRQs are set as level-triggered.
503 */
504 if (acpi_irq_model == ACPI_IRQ_MODEL_PIC) {
505 if (triggering == ACPI_LEVEL_SENSITIVE)
506 eisa_set_level_irq(gsi);
507 }
508 #endif
509
510 #ifdef CONFIG_X86_IO_APIC
511 if (acpi_irq_model == ACPI_IRQ_MODEL_IOAPIC) {
512 plat_gsi = mp_register_gsi(gsi, triggering, polarity);
513 }
514 #endif
515 acpi_gsi_to_irq(plat_gsi, &irq);
516 return irq;
517 }
518
519 /*
520 * ACPI based hotplug support for CPU
521 */
522 #ifdef CONFIG_ACPI_HOTPLUG_CPU
523
524 static int __cpuinit _acpi_map_lsapic(acpi_handle handle, int *pcpu)
525 {
526 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
527 union acpi_object *obj;
528 struct acpi_madt_local_apic *lapic;
529 cpumask_var_t tmp_map, new_map;
530 u8 physid;
531 int cpu;
532 int retval = -ENOMEM;
533
534 if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer)))
535 return -EINVAL;
536
537 if (!buffer.length || !buffer.pointer)
538 return -EINVAL;
539
540 obj = buffer.pointer;
541 if (obj->type != ACPI_TYPE_BUFFER ||
542 obj->buffer.length < sizeof(*lapic)) {
543 kfree(buffer.pointer);
544 return -EINVAL;
545 }
546
547 lapic = (struct acpi_madt_local_apic *)obj->buffer.pointer;
548
549 if (lapic->header.type != ACPI_MADT_TYPE_LOCAL_APIC ||
550 !(lapic->lapic_flags & ACPI_MADT_ENABLED)) {
551 kfree(buffer.pointer);
552 return -EINVAL;
553 }
554
555 physid = lapic->id;
556
557 kfree(buffer.pointer);
558 buffer.length = ACPI_ALLOCATE_BUFFER;
559 buffer.pointer = NULL;
560
561 if (!alloc_cpumask_var(&tmp_map, GFP_KERNEL))
562 goto out;
563
564 if (!alloc_cpumask_var(&new_map, GFP_KERNEL))
565 goto free_tmp_map;
566
567 cpumask_copy(tmp_map, cpu_present_mask);
568 acpi_register_lapic(physid, lapic->lapic_flags & ACPI_MADT_ENABLED);
569
570 /*
571 * If mp_register_lapic successfully generates a new logical cpu
572 * number, then the following will get us exactly what was mapped
573 */
574 cpumask_andnot(new_map, cpu_present_mask, tmp_map);
575 if (cpumask_empty(new_map)) {
576 printk ("Unable to map lapic to logical cpu number\n");
577 retval = -EINVAL;
578 goto free_new_map;
579 }
580
581 cpu = cpumask_first(new_map);
582
583 *pcpu = cpu;
584 retval = 0;
585
586 free_new_map:
587 free_cpumask_var(new_map);
588 free_tmp_map:
589 free_cpumask_var(tmp_map);
590 out:
591 return retval;
592 }
593
594 /* wrapper to silence section mismatch warning */
595 int __ref acpi_map_lsapic(acpi_handle handle, int *pcpu)
596 {
597 return _acpi_map_lsapic(handle, pcpu);
598 }
599 EXPORT_SYMBOL(acpi_map_lsapic);
600
601 int acpi_unmap_lsapic(int cpu)
602 {
603 per_cpu(x86_cpu_to_apicid, cpu) = -1;
604 set_cpu_present(cpu, false);
605 num_processors--;
606
607 return (0);
608 }
609
610 EXPORT_SYMBOL(acpi_unmap_lsapic);
611 #endif /* CONFIG_ACPI_HOTPLUG_CPU */
612
613 int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base)
614 {
615 /* TBD */
616 return -EINVAL;
617 }
618
619 EXPORT_SYMBOL(acpi_register_ioapic);
620
621 int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base)
622 {
623 /* TBD */
624 return -EINVAL;
625 }
626
627 EXPORT_SYMBOL(acpi_unregister_ioapic);
628
629 static int __init acpi_parse_sbf(struct acpi_table_header *table)
630 {
631 struct acpi_table_boot *sb;
632
633 sb = (struct acpi_table_boot *)table;
634 if (!sb) {
635 printk(KERN_WARNING PREFIX "Unable to map SBF\n");
636 return -ENODEV;
637 }
638
639 sbf_port = sb->cmos_index; /* Save CMOS port */
640
641 return 0;
642 }
643
644 #ifdef CONFIG_HPET_TIMER
645 #include <asm/hpet.h>
646
647 static struct __initdata resource *hpet_res;
648
649 static int __init acpi_parse_hpet(struct acpi_table_header *table)
650 {
651 struct acpi_table_hpet *hpet_tbl;
652
653 hpet_tbl = (struct acpi_table_hpet *)table;
654 if (!hpet_tbl) {
655 printk(KERN_WARNING PREFIX "Unable to map HPET\n");
656 return -ENODEV;
657 }
658
659 if (hpet_tbl->address.space_id != ACPI_SPACE_MEM) {
660 printk(KERN_WARNING PREFIX "HPET timers must be located in "
661 "memory.\n");
662 return -1;
663 }
664
665 hpet_address = hpet_tbl->address.address;
666
667 /*
668 * Some broken BIOSes advertise HPET at 0x0. We really do not
669 * want to allocate a resource there.
670 */
671 if (!hpet_address) {
672 printk(KERN_WARNING PREFIX
673 "HPET id: %#x base: %#lx is invalid\n",
674 hpet_tbl->id, hpet_address);
675 return 0;
676 }
677 #ifdef CONFIG_X86_64
678 /*
679 * Some even more broken BIOSes advertise HPET at
680 * 0xfed0000000000000 instead of 0xfed00000. Fix it up and add
681 * some noise:
682 */
683 if (hpet_address == 0xfed0000000000000UL) {
684 if (!hpet_force_user) {
685 printk(KERN_WARNING PREFIX "HPET id: %#x "
686 "base: 0xfed0000000000000 is bogus\n "
687 "try hpet=force on the kernel command line to "
688 "fix it up to 0xfed00000.\n", hpet_tbl->id);
689 hpet_address = 0;
690 return 0;
691 }
692 printk(KERN_WARNING PREFIX
693 "HPET id: %#x base: 0xfed0000000000000 fixed up "
694 "to 0xfed00000.\n", hpet_tbl->id);
695 hpet_address >>= 32;
696 }
697 #endif
698 printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n",
699 hpet_tbl->id, hpet_address);
700
701 /*
702 * Allocate and initialize the HPET firmware resource for adding into
703 * the resource tree during the lateinit timeframe.
704 */
705 #define HPET_RESOURCE_NAME_SIZE 9
706 hpet_res = alloc_bootmem(sizeof(*hpet_res) + HPET_RESOURCE_NAME_SIZE);
707
708 hpet_res->name = (void *)&hpet_res[1];
709 hpet_res->flags = IORESOURCE_MEM;
710 snprintf((char *)hpet_res->name, HPET_RESOURCE_NAME_SIZE, "HPET %u",
711 hpet_tbl->sequence);
712
713 hpet_res->start = hpet_address;
714 hpet_res->end = hpet_address + (1 * 1024) - 1;
715
716 return 0;
717 }
718
719 /*
720 * hpet_insert_resource inserts the HPET resources used into the resource
721 * tree.
722 */
723 static __init int hpet_insert_resource(void)
724 {
725 if (!hpet_res)
726 return 1;
727
728 return insert_resource(&iomem_resource, hpet_res);
729 }
730
731 late_initcall(hpet_insert_resource);
732
733 #else
734 #define acpi_parse_hpet NULL
735 #endif
736
737 static int __init acpi_parse_fadt(struct acpi_table_header *table)
738 {
739
740 #ifdef CONFIG_X86_PM_TIMER
741 /* detect the location of the ACPI PM Timer */
742 if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID) {
743 /* FADT rev. 2 */
744 if (acpi_gbl_FADT.xpm_timer_block.space_id !=
745 ACPI_ADR_SPACE_SYSTEM_IO)
746 return 0;
747
748 pmtmr_ioport = acpi_gbl_FADT.xpm_timer_block.address;
749 /*
750 * "X" fields are optional extensions to the original V1.0
751 * fields, so we must selectively expand V1.0 fields if the
752 * corresponding X field is zero.
753 */
754 if (!pmtmr_ioport)
755 pmtmr_ioport = acpi_gbl_FADT.pm_timer_block;
756 } else {
757 /* FADT rev. 1 */
758 pmtmr_ioport = acpi_gbl_FADT.pm_timer_block;
759 }
760 if (pmtmr_ioport)
761 printk(KERN_INFO PREFIX "PM-Timer IO Port: %#x\n",
762 pmtmr_ioport);
763 #endif
764 return 0;
765 }
766
767 #ifdef CONFIG_X86_LOCAL_APIC
768 /*
769 * Parse LAPIC entries in MADT
770 * returns 0 on success, < 0 on error
771 */
772
773 static void __init acpi_register_lapic_address(unsigned long address)
774 {
775 mp_lapic_addr = address;
776
777 set_fixmap_nocache(FIX_APIC_BASE, address);
778 if (boot_cpu_physical_apicid == -1U) {
779 boot_cpu_physical_apicid = read_apic_id();
780 apic_version[boot_cpu_physical_apicid] =
781 GET_APIC_VERSION(apic_read(APIC_LVR));
782 }
783 }
784
785 static int __init early_acpi_parse_madt_lapic_addr_ovr(void)
786 {
787 int count;
788
789 if (!cpu_has_apic)
790 return -ENODEV;
791
792 /*
793 * Note that the LAPIC address is obtained from the MADT (32-bit value)
794 * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value).
795 */
796
797 count =
798 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE,
799 acpi_parse_lapic_addr_ovr, 0);
800 if (count < 0) {
801 printk(KERN_ERR PREFIX
802 "Error parsing LAPIC address override entry\n");
803 return count;
804 }
805
806 acpi_register_lapic_address(acpi_lapic_addr);
807
808 return count;
809 }
810
811 static int __init acpi_parse_madt_lapic_entries(void)
812 {
813 int count;
814
815 if (!cpu_has_apic)
816 return -ENODEV;
817
818 /*
819 * Note that the LAPIC address is obtained from the MADT (32-bit value)
820 * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value).
821 */
822
823 count =
824 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE,
825 acpi_parse_lapic_addr_ovr, 0);
826 if (count < 0) {
827 printk(KERN_ERR PREFIX
828 "Error parsing LAPIC address override entry\n");
829 return count;
830 }
831
832 acpi_register_lapic_address(acpi_lapic_addr);
833
834 count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_SAPIC,
835 acpi_parse_sapic, MAX_APICS);
836
837 if (!count)
838 count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC,
839 acpi_parse_lapic, MAX_APICS);
840 if (!count) {
841 printk(KERN_ERR PREFIX "No LAPIC entries present\n");
842 /* TBD: Cleanup to allow fallback to MPS */
843 return -ENODEV;
844 } else if (count < 0) {
845 printk(KERN_ERR PREFIX "Error parsing LAPIC entry\n");
846 /* TBD: Cleanup to allow fallback to MPS */
847 return count;
848 }
849
850 count =
851 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI, acpi_parse_lapic_nmi, 0);
852 if (count < 0) {
853 printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n");
854 /* TBD: Cleanup to allow fallback to MPS */
855 return count;
856 }
857 return 0;
858 }
859 #endif /* CONFIG_X86_LOCAL_APIC */
860
861 #ifdef CONFIG_X86_IO_APIC
862 #define MP_ISA_BUS 0
863
864 #ifdef CONFIG_X86_ES7000
865 extern int es7000_plat;
866 #endif
867
868 static struct {
869 int apic_id;
870 int gsi_base;
871 int gsi_end;
872 DECLARE_BITMAP(pin_programmed, MP_MAX_IOAPIC_PIN + 1);
873 } mp_ioapic_routing[MAX_IO_APICS];
874
875 static int mp_find_ioapic(int gsi)
876 {
877 int i = 0;
878
879 /* Find the IOAPIC that manages this GSI. */
880 for (i = 0; i < nr_ioapics; i++) {
881 if ((gsi >= mp_ioapic_routing[i].gsi_base)
882 && (gsi <= mp_ioapic_routing[i].gsi_end))
883 return i;
884 }
885
886 printk(KERN_ERR "ERROR: Unable to locate IOAPIC for GSI %d\n", gsi);
887 return -1;
888 }
889
890 static u8 __init uniq_ioapic_id(u8 id)
891 {
892 #ifdef CONFIG_X86_32
893 if ((boot_cpu_data.x86_vendor == X86_VENDOR_INTEL) &&
894 !APIC_XAPIC(apic_version[boot_cpu_physical_apicid]))
895 return io_apic_get_unique_id(nr_ioapics, id);
896 else
897 return id;
898 #else
899 int i;
900 DECLARE_BITMAP(used, 256);
901 bitmap_zero(used, 256);
902 for (i = 0; i < nr_ioapics; i++) {
903 struct mpc_ioapic *ia = &mp_ioapics[i];
904 __set_bit(ia->apicid, used);
905 }
906 if (!test_bit(id, used))
907 return id;
908 return find_first_zero_bit(used, 256);
909 #endif
910 }
911
912 static int bad_ioapic(unsigned long address)
913 {
914 if (nr_ioapics >= MAX_IO_APICS) {
915 printk(KERN_ERR "ERROR: Max # of I/O APICs (%d) exceeded "
916 "(found %d)\n", MAX_IO_APICS, nr_ioapics);
917 panic("Recompile kernel with bigger MAX_IO_APICS!\n");
918 }
919 if (!address) {
920 printk(KERN_ERR "WARNING: Bogus (zero) I/O APIC address"
921 " found in table, skipping!\n");
922 return 1;
923 }
924 return 0;
925 }
926
927 void __init mp_register_ioapic(int id, u32 address, u32 gsi_base)
928 {
929 int idx = 0;
930
931 if (bad_ioapic(address))
932 return;
933
934 idx = nr_ioapics;
935
936 mp_ioapics[idx].type = MP_IOAPIC;
937 mp_ioapics[idx].flags = MPC_APIC_USABLE;
938 mp_ioapics[idx].apicaddr = address;
939
940 set_fixmap_nocache(FIX_IO_APIC_BASE_0 + idx, address);
941 mp_ioapics[idx].apicid = uniq_ioapic_id(id);
942 #ifdef CONFIG_X86_32
943 mp_ioapics[idx].apicver = io_apic_get_version(idx);
944 #else
945 mp_ioapics[idx].apicver = 0;
946 #endif
947 /*
948 * Build basic GSI lookup table to facilitate gsi->io_apic lookups
949 * and to prevent reprogramming of IOAPIC pins (PCI GSIs).
950 */
951 mp_ioapic_routing[idx].apic_id = mp_ioapics[idx].apicid;
952 mp_ioapic_routing[idx].gsi_base = gsi_base;
953 mp_ioapic_routing[idx].gsi_end = gsi_base +
954 io_apic_get_redir_entries(idx);
955
956 printk(KERN_INFO "IOAPIC[%d]: apic_id %d, version %d, address 0x%x, "
957 "GSI %d-%d\n", idx, mp_ioapics[idx].apicid,
958 mp_ioapics[idx].apicver, mp_ioapics[idx].apicaddr,
959 mp_ioapic_routing[idx].gsi_base, mp_ioapic_routing[idx].gsi_end);
960
961 nr_ioapics++;
962 }
963
964 static void assign_to_mp_irq(struct mpc_intsrc *m,
965 struct mpc_intsrc *mp_irq)
966 {
967 memcpy(mp_irq, m, sizeof(struct mpc_intsrc));
968 }
969
970 static int mp_irq_cmp(struct mpc_intsrc *mp_irq,
971 struct mpc_intsrc *m)
972 {
973 return memcmp(mp_irq, m, sizeof(struct mpc_intsrc));
974 }
975
976 static void save_mp_irq(struct mpc_intsrc *m)
977 {
978 int i;
979
980 for (i = 0; i < mp_irq_entries; i++) {
981 if (!mp_irq_cmp(&mp_irqs[i], m))
982 return;
983 }
984
985 assign_to_mp_irq(m, &mp_irqs[mp_irq_entries]);
986 if (++mp_irq_entries == MAX_IRQ_SOURCES)
987 panic("Max # of irq sources exceeded!!\n");
988 }
989
990 void __init mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger, u32 gsi)
991 {
992 int ioapic;
993 int pin;
994 struct mpc_intsrc mp_irq;
995
996 /*
997 * Convert 'gsi' to 'ioapic.pin'.
998 */
999 ioapic = mp_find_ioapic(gsi);
1000 if (ioapic < 0)
1001 return;
1002 pin = gsi - mp_ioapic_routing[ioapic].gsi_base;
1003
1004 /*
1005 * TBD: This check is for faulty timer entries, where the override
1006 * erroneously sets the trigger to level, resulting in a HUGE
1007 * increase of timer interrupts!
1008 */
1009 if ((bus_irq == 0) && (trigger == 3))
1010 trigger = 1;
1011
1012 mp_irq.type = MP_INTSRC;
1013 mp_irq.irqtype = mp_INT;
1014 mp_irq.irqflag = (trigger << 2) | polarity;
1015 mp_irq.srcbus = MP_ISA_BUS;
1016 mp_irq.srcbusirq = bus_irq; /* IRQ */
1017 mp_irq.dstapic = mp_ioapics[ioapic].apicid; /* APIC ID */
1018 mp_irq.dstirq = pin; /* INTIN# */
1019
1020 save_mp_irq(&mp_irq);
1021 }
1022
1023 void __init mp_config_acpi_legacy_irqs(void)
1024 {
1025 int i;
1026 int ioapic;
1027 unsigned int dstapic;
1028 struct mpc_intsrc mp_irq;
1029
1030 #if defined (CONFIG_MCA) || defined (CONFIG_EISA)
1031 /*
1032 * Fabricate the legacy ISA bus (bus #31).
1033 */
1034 mp_bus_id_to_type[MP_ISA_BUS] = MP_BUS_ISA;
1035 #endif
1036 set_bit(MP_ISA_BUS, mp_bus_not_pci);
1037 pr_debug("Bus #%d is ISA\n", MP_ISA_BUS);
1038
1039 #ifdef CONFIG_X86_ES7000
1040 /*
1041 * Older generations of ES7000 have no legacy identity mappings
1042 */
1043 if (es7000_plat == 1)
1044 return;
1045 #endif
1046
1047 /*
1048 * Locate the IOAPIC that manages the ISA IRQs (0-15).
1049 */
1050 ioapic = mp_find_ioapic(0);
1051 if (ioapic < 0)
1052 return;
1053 dstapic = mp_ioapics[ioapic].apicid;
1054
1055 /*
1056 * Use the default configuration for the IRQs 0-15. Unless
1057 * overridden by (MADT) interrupt source override entries.
1058 */
1059 for (i = 0; i < 16; i++) {
1060 int idx;
1061
1062 for (idx = 0; idx < mp_irq_entries; idx++) {
1063 struct mpc_intsrc *irq = mp_irqs + idx;
1064
1065 /* Do we already have a mapping for this ISA IRQ? */
1066 if (irq->srcbus == MP_ISA_BUS && irq->srcbusirq == i)
1067 break;
1068
1069 /* Do we already have a mapping for this IOAPIC pin */
1070 if (irq->dstapic == dstapic && irq->dstirq == i)
1071 break;
1072 }
1073
1074 if (idx != mp_irq_entries) {
1075 printk(KERN_DEBUG "ACPI: IRQ%d used by override.\n", i);
1076 continue; /* IRQ already used */
1077 }
1078
1079 mp_irq.type = MP_INTSRC;
1080 mp_irq.irqflag = 0; /* Conforming */
1081 mp_irq.srcbus = MP_ISA_BUS;
1082 mp_irq.dstapic = dstapic;
1083 mp_irq.irqtype = mp_INT;
1084 mp_irq.srcbusirq = i; /* Identity mapped */
1085 mp_irq.dstirq = i;
1086
1087 save_mp_irq(&mp_irq);
1088 }
1089 }
1090
1091 int mp_register_gsi(u32 gsi, int triggering, int polarity)
1092 {
1093 int ioapic;
1094 int ioapic_pin;
1095 #ifdef CONFIG_X86_32
1096 #define MAX_GSI_NUM 4096
1097 #define IRQ_COMPRESSION_START 64
1098
1099 static int pci_irq = IRQ_COMPRESSION_START;
1100 /*
1101 * Mapping between Global System Interrupts, which
1102 * represent all possible interrupts, and IRQs
1103 * assigned to actual devices.
1104 */
1105 static int gsi_to_irq[MAX_GSI_NUM];
1106 #else
1107
1108 if (acpi_irq_model != ACPI_IRQ_MODEL_IOAPIC)
1109 return gsi;
1110 #endif
1111
1112 /* Don't set up the ACPI SCI because it's already set up */
1113 if (acpi_gbl_FADT.sci_interrupt == gsi)
1114 return gsi;
1115
1116 ioapic = mp_find_ioapic(gsi);
1117 if (ioapic < 0) {
1118 printk(KERN_WARNING "No IOAPIC for GSI %u\n", gsi);
1119 return gsi;
1120 }
1121
1122 ioapic_pin = gsi - mp_ioapic_routing[ioapic].gsi_base;
1123
1124 #ifdef CONFIG_X86_32
1125 if (ioapic_renumber_irq)
1126 gsi = ioapic_renumber_irq(ioapic, gsi);
1127 #endif
1128
1129 /*
1130 * Avoid pin reprogramming. PRTs typically include entries
1131 * with redundant pin->gsi mappings (but unique PCI devices);
1132 * we only program the IOAPIC on the first.
1133 */
1134 if (ioapic_pin > MP_MAX_IOAPIC_PIN) {
1135 printk(KERN_ERR "Invalid reference to IOAPIC pin "
1136 "%d-%d\n", mp_ioapic_routing[ioapic].apic_id,
1137 ioapic_pin);
1138 return gsi;
1139 }
1140 if (test_bit(ioapic_pin, mp_ioapic_routing[ioapic].pin_programmed)) {
1141 pr_debug("Pin %d-%d already programmed\n",
1142 mp_ioapic_routing[ioapic].apic_id, ioapic_pin);
1143 #ifdef CONFIG_X86_32
1144 return (gsi < IRQ_COMPRESSION_START ? gsi : gsi_to_irq[gsi]);
1145 #else
1146 return gsi;
1147 #endif
1148 }
1149
1150 set_bit(ioapic_pin, mp_ioapic_routing[ioapic].pin_programmed);
1151 #ifdef CONFIG_X86_32
1152 /*
1153 * For GSI >= 64, use IRQ compression
1154 */
1155 if ((gsi >= IRQ_COMPRESSION_START)
1156 && (triggering == ACPI_LEVEL_SENSITIVE)) {
1157 /*
1158 * For PCI devices assign IRQs in order, avoiding gaps
1159 * due to unused I/O APIC pins.
1160 */
1161 int irq = gsi;
1162 if (gsi < MAX_GSI_NUM) {
1163 /*
1164 * Retain the VIA chipset work-around (gsi > 15), but
1165 * avoid a problem where the 8254 timer (IRQ0) is setup
1166 * via an override (so it's not on pin 0 of the ioapic),
1167 * and at the same time, the pin 0 interrupt is a PCI
1168 * type. The gsi > 15 test could cause these two pins
1169 * to be shared as IRQ0, and they are not shareable.
1170 * So test for this condition, and if necessary, avoid
1171 * the pin collision.
1172 */
1173 gsi = pci_irq++;
1174 /*
1175 * Don't assign IRQ used by ACPI SCI
1176 */
1177 if (gsi == acpi_gbl_FADT.sci_interrupt)
1178 gsi = pci_irq++;
1179 gsi_to_irq[irq] = gsi;
1180 } else {
1181 printk(KERN_ERR "GSI %u is too high\n", gsi);
1182 return gsi;
1183 }
1184 }
1185 #endif
1186 io_apic_set_pci_routing(ioapic, ioapic_pin, gsi,
1187 triggering == ACPI_EDGE_SENSITIVE ? 0 : 1,
1188 polarity == ACPI_ACTIVE_HIGH ? 0 : 1);
1189 return gsi;
1190 }
1191
1192 int mp_config_acpi_gsi(unsigned char number, unsigned int devfn, u8 pin,
1193 u32 gsi, int triggering, int polarity)
1194 {
1195 #ifdef CONFIG_X86_MPPARSE
1196 struct mpc_intsrc mp_irq;
1197 int ioapic;
1198
1199 if (!acpi_ioapic)
1200 return 0;
1201
1202 /* print the entry should happen on mptable identically */
1203 mp_irq.type = MP_INTSRC;
1204 mp_irq.irqtype = mp_INT;
1205 mp_irq.irqflag = (triggering == ACPI_EDGE_SENSITIVE ? 4 : 0x0c) |
1206 (polarity == ACPI_ACTIVE_HIGH ? 1 : 3);
1207 mp_irq.srcbus = number;
1208 mp_irq.srcbusirq = (((devfn >> 3) & 0x1f) << 2) | ((pin - 1) & 3);
1209 ioapic = mp_find_ioapic(gsi);
1210 mp_irq.dstapic = mp_ioapic_routing[ioapic].apic_id;
1211 mp_irq.dstirq = gsi - mp_ioapic_routing[ioapic].gsi_base;
1212
1213 save_mp_irq(&mp_irq);
1214 #endif
1215 return 0;
1216 }
1217
1218 /*
1219 * Parse IOAPIC related entries in MADT
1220 * returns 0 on success, < 0 on error
1221 */
1222 static int __init acpi_parse_madt_ioapic_entries(void)
1223 {
1224 int count;
1225
1226 /*
1227 * ACPI interpreter is required to complete interrupt setup,
1228 * so if it is off, don't enumerate the io-apics with ACPI.
1229 * If MPS is present, it will handle them,
1230 * otherwise the system will stay in PIC mode
1231 */
1232 if (acpi_disabled || acpi_noirq) {
1233 return -ENODEV;
1234 }
1235
1236 if (!cpu_has_apic)
1237 return -ENODEV;
1238
1239 /*
1240 * if "noapic" boot option, don't look for IO-APICs
1241 */
1242 if (skip_ioapic_setup) {
1243 printk(KERN_INFO PREFIX "Skipping IOAPIC probe "
1244 "due to 'noapic' option.\n");
1245 return -ENODEV;
1246 }
1247
1248 count =
1249 acpi_table_parse_madt(ACPI_MADT_TYPE_IO_APIC, acpi_parse_ioapic,
1250 MAX_IO_APICS);
1251 if (!count) {
1252 printk(KERN_ERR PREFIX "No IOAPIC entries present\n");
1253 return -ENODEV;
1254 } else if (count < 0) {
1255 printk(KERN_ERR PREFIX "Error parsing IOAPIC entry\n");
1256 return count;
1257 }
1258
1259 count =
1260 acpi_table_parse_madt(ACPI_MADT_TYPE_INTERRUPT_OVERRIDE, acpi_parse_int_src_ovr,
1261 nr_irqs);
1262 if (count < 0) {
1263 printk(KERN_ERR PREFIX
1264 "Error parsing interrupt source overrides entry\n");
1265 /* TBD: Cleanup to allow fallback to MPS */
1266 return count;
1267 }
1268
1269 /*
1270 * If BIOS did not supply an INT_SRC_OVR for the SCI
1271 * pretend we got one so we can set the SCI flags.
1272 */
1273 if (!acpi_sci_override_gsi)
1274 acpi_sci_ioapic_setup(acpi_gbl_FADT.sci_interrupt, 0, 0);
1275
1276 /* Fill in identity legacy mapings where no override */
1277 mp_config_acpi_legacy_irqs();
1278
1279 count =
1280 acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE, acpi_parse_nmi_src,
1281 nr_irqs);
1282 if (count < 0) {
1283 printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n");
1284 /* TBD: Cleanup to allow fallback to MPS */
1285 return count;
1286 }
1287
1288 return 0;
1289 }
1290 #else
1291 static inline int acpi_parse_madt_ioapic_entries(void)
1292 {
1293 return -1;
1294 }
1295 #endif /* !CONFIG_X86_IO_APIC */
1296
1297 static void __init early_acpi_process_madt(void)
1298 {
1299 #ifdef CONFIG_X86_LOCAL_APIC
1300 int error;
1301
1302 if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) {
1303
1304 /*
1305 * Parse MADT LAPIC entries
1306 */
1307 error = early_acpi_parse_madt_lapic_addr_ovr();
1308 if (!error) {
1309 acpi_lapic = 1;
1310 smp_found_config = 1;
1311 }
1312 if (error == -EINVAL) {
1313 /*
1314 * Dell Precision Workstation 410, 610 come here.
1315 */
1316 printk(KERN_ERR PREFIX
1317 "Invalid BIOS MADT, disabling ACPI\n");
1318 disable_acpi();
1319 }
1320 }
1321 #endif
1322 }
1323
1324 static void __init acpi_process_madt(void)
1325 {
1326 #ifdef CONFIG_X86_LOCAL_APIC
1327 int error;
1328
1329 if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) {
1330
1331 /*
1332 * Parse MADT LAPIC entries
1333 */
1334 error = acpi_parse_madt_lapic_entries();
1335 if (!error) {
1336 acpi_lapic = 1;
1337
1338 #ifdef CONFIG_X86_GENERICARCH
1339 generic_bigsmp_probe();
1340 #endif
1341 /*
1342 * Parse MADT IO-APIC entries
1343 */
1344 error = acpi_parse_madt_ioapic_entries();
1345 if (!error) {
1346 acpi_irq_model = ACPI_IRQ_MODEL_IOAPIC;
1347 acpi_ioapic = 1;
1348
1349 smp_found_config = 1;
1350 if (apic->setup_apic_routing)
1351 apic->setup_apic_routing();
1352 }
1353 }
1354 if (error == -EINVAL) {
1355 /*
1356 * Dell Precision Workstation 410, 610 come here.
1357 */
1358 printk(KERN_ERR PREFIX
1359 "Invalid BIOS MADT, disabling ACPI\n");
1360 disable_acpi();
1361 }
1362 } else {
1363 /*
1364 * ACPI found no MADT, and so ACPI wants UP PIC mode.
1365 * In the event an MPS table was found, forget it.
1366 * Boot with "acpi=off" to use MPS on such a system.
1367 */
1368 if (smp_found_config) {
1369 printk(KERN_WARNING PREFIX
1370 "No APIC-table, disabling MPS\n");
1371 smp_found_config = 0;
1372 }
1373 }
1374
1375 /*
1376 * ACPI supports both logical (e.g. Hyper-Threading) and physical
1377 * processors, where MPS only supports physical.
1378 */
1379 if (acpi_lapic && acpi_ioapic)
1380 printk(KERN_INFO "Using ACPI (MADT) for SMP configuration "
1381 "information\n");
1382 else if (acpi_lapic)
1383 printk(KERN_INFO "Using ACPI for processor (LAPIC) "
1384 "configuration information\n");
1385 #endif
1386 return;
1387 }
1388
1389 static int __init disable_acpi_irq(const struct dmi_system_id *d)
1390 {
1391 if (!acpi_force) {
1392 printk(KERN_NOTICE "%s detected: force use of acpi=noirq\n",
1393 d->ident);
1394 acpi_noirq_set();
1395 }
1396 return 0;
1397 }
1398
1399 static int __init disable_acpi_pci(const struct dmi_system_id *d)
1400 {
1401 if (!acpi_force) {
1402 printk(KERN_NOTICE "%s detected: force use of pci=noacpi\n",
1403 d->ident);
1404 acpi_disable_pci();
1405 }
1406 return 0;
1407 }
1408
1409 static int __init dmi_disable_acpi(const struct dmi_system_id *d)
1410 {
1411 if (!acpi_force) {
1412 printk(KERN_NOTICE "%s detected: acpi off\n", d->ident);
1413 disable_acpi();
1414 } else {
1415 printk(KERN_NOTICE
1416 "Warning: DMI blacklist says broken, but acpi forced\n");
1417 }
1418 return 0;
1419 }
1420
1421 /*
1422 * Limit ACPI to CPU enumeration for HT
1423 */
1424 static int __init force_acpi_ht(const struct dmi_system_id *d)
1425 {
1426 if (!acpi_force) {
1427 printk(KERN_NOTICE "%s detected: force use of acpi=ht\n",
1428 d->ident);
1429 disable_acpi();
1430 acpi_ht = 1;
1431 } else {
1432 printk(KERN_NOTICE
1433 "Warning: acpi=force overrules DMI blacklist: acpi=ht\n");
1434 }
1435 return 0;
1436 }
1437
1438 /*
1439 * Force ignoring BIOS IRQ0 pin2 override
1440 */
1441 static int __init dmi_ignore_irq0_timer_override(const struct dmi_system_id *d)
1442 {
1443 /*
1444 * The ati_ixp4x0_rev() early PCI quirk should have set
1445 * the acpi_skip_timer_override flag already:
1446 */
1447 if (!acpi_skip_timer_override) {
1448 WARN(1, KERN_ERR "ati_ixp4x0 quirk not complete.\n");
1449 pr_notice("%s detected: Ignoring BIOS IRQ0 pin2 override\n",
1450 d->ident);
1451 acpi_skip_timer_override = 1;
1452 }
1453 return 0;
1454 }
1455
1456 /*
1457 * If your system is blacklisted here, but you find that acpi=force
1458 * works for you, please contact acpi-devel@sourceforge.net
1459 */
1460 static struct dmi_system_id __initdata acpi_dmi_table[] = {
1461 /*
1462 * Boxes that need ACPI disabled
1463 */
1464 {
1465 .callback = dmi_disable_acpi,
1466 .ident = "IBM Thinkpad",
1467 .matches = {
1468 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1469 DMI_MATCH(DMI_BOARD_NAME, "2629H1G"),
1470 },
1471 },
1472
1473 /*
1474 * Boxes that need acpi=ht
1475 */
1476 {
1477 .callback = force_acpi_ht,
1478 .ident = "FSC Primergy T850",
1479 .matches = {
1480 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
1481 DMI_MATCH(DMI_PRODUCT_NAME, "PRIMERGY T850"),
1482 },
1483 },
1484 {
1485 .callback = force_acpi_ht,
1486 .ident = "HP VISUALIZE NT Workstation",
1487 .matches = {
1488 DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"),
1489 DMI_MATCH(DMI_PRODUCT_NAME, "HP VISUALIZE NT Workstation"),
1490 },
1491 },
1492 {
1493 .callback = force_acpi_ht,
1494 .ident = "Compaq Workstation W8000",
1495 .matches = {
1496 DMI_MATCH(DMI_SYS_VENDOR, "Compaq"),
1497 DMI_MATCH(DMI_PRODUCT_NAME, "Workstation W8000"),
1498 },
1499 },
1500 {
1501 .callback = force_acpi_ht,
1502 .ident = "ASUS P4B266",
1503 .matches = {
1504 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
1505 DMI_MATCH(DMI_BOARD_NAME, "P4B266"),
1506 },
1507 },
1508 {
1509 .callback = force_acpi_ht,
1510 .ident = "ASUS P2B-DS",
1511 .matches = {
1512 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
1513 DMI_MATCH(DMI_BOARD_NAME, "P2B-DS"),
1514 },
1515 },
1516 {
1517 .callback = force_acpi_ht,
1518 .ident = "ASUS CUR-DLS",
1519 .matches = {
1520 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
1521 DMI_MATCH(DMI_BOARD_NAME, "CUR-DLS"),
1522 },
1523 },
1524 {
1525 .callback = force_acpi_ht,
1526 .ident = "ABIT i440BX-W83977",
1527 .matches = {
1528 DMI_MATCH(DMI_BOARD_VENDOR, "ABIT <http://www.abit.com>"),
1529 DMI_MATCH(DMI_BOARD_NAME, "i440BX-W83977 (BP6)"),
1530 },
1531 },
1532 {
1533 .callback = force_acpi_ht,
1534 .ident = "IBM Bladecenter",
1535 .matches = {
1536 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1537 DMI_MATCH(DMI_BOARD_NAME, "IBM eServer BladeCenter HS20"),
1538 },
1539 },
1540 {
1541 .callback = force_acpi_ht,
1542 .ident = "IBM eServer xSeries 360",
1543 .matches = {
1544 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1545 DMI_MATCH(DMI_BOARD_NAME, "eServer xSeries 360"),
1546 },
1547 },
1548 {
1549 .callback = force_acpi_ht,
1550 .ident = "IBM eserver xSeries 330",
1551 .matches = {
1552 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1553 DMI_MATCH(DMI_BOARD_NAME, "eserver xSeries 330"),
1554 },
1555 },
1556 {
1557 .callback = force_acpi_ht,
1558 .ident = "IBM eserver xSeries 440",
1559 .matches = {
1560 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1561 DMI_MATCH(DMI_PRODUCT_NAME, "eserver xSeries 440"),
1562 },
1563 },
1564
1565 /*
1566 * Boxes that need ACPI PCI IRQ routing disabled
1567 */
1568 {
1569 .callback = disable_acpi_irq,
1570 .ident = "ASUS A7V",
1571 .matches = {
1572 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC"),
1573 DMI_MATCH(DMI_BOARD_NAME, "<A7V>"),
1574 /* newer BIOS, Revision 1011, does work */
1575 DMI_MATCH(DMI_BIOS_VERSION,
1576 "ASUS A7V ACPI BIOS Revision 1007"),
1577 },
1578 },
1579 {
1580 /*
1581 * Latest BIOS for IBM 600E (1.16) has bad pcinum
1582 * for LPC bridge, which is needed for the PCI
1583 * interrupt links to work. DSDT fix is in bug 5966.
1584 * 2645, 2646 model numbers are shared with 600/600E/600X
1585 */
1586 .callback = disable_acpi_irq,
1587 .ident = "IBM Thinkpad 600 Series 2645",
1588 .matches = {
1589 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1590 DMI_MATCH(DMI_BOARD_NAME, "2645"),
1591 },
1592 },
1593 {
1594 .callback = disable_acpi_irq,
1595 .ident = "IBM Thinkpad 600 Series 2646",
1596 .matches = {
1597 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1598 DMI_MATCH(DMI_BOARD_NAME, "2646"),
1599 },
1600 },
1601 /*
1602 * Boxes that need ACPI PCI IRQ routing and PCI scan disabled
1603 */
1604 { /* _BBN 0 bug */
1605 .callback = disable_acpi_pci,
1606 .ident = "ASUS PR-DLS",
1607 .matches = {
1608 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
1609 DMI_MATCH(DMI_BOARD_NAME, "PR-DLS"),
1610 DMI_MATCH(DMI_BIOS_VERSION,
1611 "ASUS PR-DLS ACPI BIOS Revision 1010"),
1612 DMI_MATCH(DMI_BIOS_DATE, "03/21/2003")
1613 },
1614 },
1615 {
1616 .callback = disable_acpi_pci,
1617 .ident = "Acer TravelMate 36x Laptop",
1618 .matches = {
1619 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
1620 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 360"),
1621 },
1622 },
1623 {}
1624 };
1625
1626 /* second table for DMI checks that should run after early-quirks */
1627 static struct dmi_system_id __initdata acpi_dmi_table_late[] = {
1628 /*
1629 * HP laptops which use a DSDT reporting as HP/SB400/10000,
1630 * which includes some code which overrides all temperature
1631 * trip points to 16C if the INTIN2 input of the I/O APIC
1632 * is enabled. This input is incorrectly designated the
1633 * ISA IRQ 0 via an interrupt source override even though
1634 * it is wired to the output of the master 8259A and INTIN0
1635 * is not connected at all. Force ignoring BIOS IRQ0 pin2
1636 * override in that cases.
1637 */
1638 {
1639 .callback = dmi_ignore_irq0_timer_override,
1640 .ident = "HP nx6115 laptop",
1641 .matches = {
1642 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1643 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6115"),
1644 },
1645 },
1646 {
1647 .callback = dmi_ignore_irq0_timer_override,
1648 .ident = "HP NX6125 laptop",
1649 .matches = {
1650 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1651 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6125"),
1652 },
1653 },
1654 {
1655 .callback = dmi_ignore_irq0_timer_override,
1656 .ident = "HP NX6325 laptop",
1657 .matches = {
1658 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1659 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6325"),
1660 },
1661 },
1662 {
1663 .callback = dmi_ignore_irq0_timer_override,
1664 .ident = "HP 6715b laptop",
1665 .matches = {
1666 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1667 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq 6715b"),
1668 },
1669 },
1670 {}
1671 };
1672
1673 /*
1674 * acpi_boot_table_init() and acpi_boot_init()
1675 * called from setup_arch(), always.
1676 * 1. checksums all tables
1677 * 2. enumerates lapics
1678 * 3. enumerates io-apics
1679 *
1680 * acpi_table_init() is separate to allow reading SRAT without
1681 * other side effects.
1682 *
1683 * side effects of acpi_boot_init:
1684 * acpi_lapic = 1 if LAPIC found
1685 * acpi_ioapic = 1 if IOAPIC found
1686 * if (acpi_lapic && acpi_ioapic) smp_found_config = 1;
1687 * if acpi_blacklisted() acpi_disabled = 1;
1688 * acpi_irq_model=...
1689 * ...
1690 *
1691 * return value: (currently ignored)
1692 * 0: success
1693 * !0: failure
1694 */
1695
1696 int __init acpi_boot_table_init(void)
1697 {
1698 int error;
1699
1700 dmi_check_system(acpi_dmi_table);
1701
1702 /*
1703 * If acpi_disabled, bail out
1704 * One exception: acpi=ht continues far enough to enumerate LAPICs
1705 */
1706 if (acpi_disabled && !acpi_ht)
1707 return 1;
1708
1709 /*
1710 * Initialize the ACPI boot-time table parser.
1711 */
1712 error = acpi_table_init();
1713 if (error) {
1714 disable_acpi();
1715 return error;
1716 }
1717
1718 acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf);
1719
1720 /*
1721 * blacklist may disable ACPI entirely
1722 */
1723 error = acpi_blacklisted();
1724 if (error) {
1725 if (acpi_force) {
1726 printk(KERN_WARNING PREFIX "acpi=force override\n");
1727 } else {
1728 printk(KERN_WARNING PREFIX "Disabling ACPI support\n");
1729 disable_acpi();
1730 return error;
1731 }
1732 }
1733
1734 return 0;
1735 }
1736
1737 int __init early_acpi_boot_init(void)
1738 {
1739 /*
1740 * If acpi_disabled, bail out
1741 * One exception: acpi=ht continues far enough to enumerate LAPICs
1742 */
1743 if (acpi_disabled && !acpi_ht)
1744 return 1;
1745
1746 /*
1747 * Process the Multiple APIC Description Table (MADT), if present
1748 */
1749 early_acpi_process_madt();
1750
1751 return 0;
1752 }
1753
1754 int __init acpi_boot_init(void)
1755 {
1756 /* those are executed after early-quirks are executed */
1757 dmi_check_system(acpi_dmi_table_late);
1758
1759 /*
1760 * If acpi_disabled, bail out
1761 * One exception: acpi=ht continues far enough to enumerate LAPICs
1762 */
1763 if (acpi_disabled && !acpi_ht)
1764 return 1;
1765
1766 acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf);
1767
1768 /*
1769 * set sci_int and PM timer address
1770 */
1771 acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt);
1772
1773 /*
1774 * Process the Multiple APIC Description Table (MADT), if present
1775 */
1776 acpi_process_madt();
1777
1778 acpi_table_parse(ACPI_SIG_HPET, acpi_parse_hpet);
1779
1780 return 0;
1781 }
1782
1783 static int __init parse_acpi(char *arg)
1784 {
1785 if (!arg)
1786 return -EINVAL;
1787
1788 /* "acpi=off" disables both ACPI table parsing and interpreter */
1789 if (strcmp(arg, "off") == 0) {
1790 disable_acpi();
1791 }
1792 /* acpi=force to over-ride black-list */
1793 else if (strcmp(arg, "force") == 0) {
1794 acpi_force = 1;
1795 acpi_ht = 1;
1796 acpi_disabled = 0;
1797 }
1798 /* acpi=strict disables out-of-spec workarounds */
1799 else if (strcmp(arg, "strict") == 0) {
1800 acpi_strict = 1;
1801 }
1802 /* Limit ACPI just to boot-time to enable HT */
1803 else if (strcmp(arg, "ht") == 0) {
1804 if (!acpi_force)
1805 disable_acpi();
1806 acpi_ht = 1;
1807 }
1808 /* acpi=rsdt use RSDT instead of XSDT */
1809 else if (strcmp(arg, "rsdt") == 0) {
1810 acpi_rsdt_forced = 1;
1811 }
1812 /* "acpi=noirq" disables ACPI interrupt routing */
1813 else if (strcmp(arg, "noirq") == 0) {
1814 acpi_noirq_set();
1815 } else {
1816 /* Core will printk when we return error. */
1817 return -EINVAL;
1818 }
1819 return 0;
1820 }
1821 early_param("acpi", parse_acpi);
1822
1823 /* FIXME: Using pci= for an ACPI parameter is a travesty. */
1824 static int __init parse_pci(char *arg)
1825 {
1826 if (arg && strcmp(arg, "noacpi") == 0)
1827 acpi_disable_pci();
1828 return 0;
1829 }
1830 early_param("pci", parse_pci);
1831
1832 int __init acpi_mps_check(void)
1833 {
1834 #if defined(CONFIG_X86_LOCAL_APIC) && !defined(CONFIG_X86_MPPARSE)
1835 /* mptable code is not built-in*/
1836 if (acpi_disabled || acpi_noirq) {
1837 printk(KERN_WARNING "MPS support code is not built-in.\n"
1838 "Using acpi=off or acpi=noirq or pci=noacpi "
1839 "may have problem\n");
1840 return 1;
1841 }
1842 #endif
1843 return 0;
1844 }
1845
1846 #ifdef CONFIG_X86_IO_APIC
1847 static int __init parse_acpi_skip_timer_override(char *arg)
1848 {
1849 acpi_skip_timer_override = 1;
1850 return 0;
1851 }
1852 early_param("acpi_skip_timer_override", parse_acpi_skip_timer_override);
1853
1854 static int __init parse_acpi_use_timer_override(char *arg)
1855 {
1856 acpi_use_timer_override = 1;
1857 return 0;
1858 }
1859 early_param("acpi_use_timer_override", parse_acpi_use_timer_override);
1860 #endif /* CONFIG_X86_IO_APIC */
1861
1862 static int __init setup_acpi_sci(char *s)
1863 {
1864 if (!s)
1865 return -EINVAL;
1866 if (!strcmp(s, "edge"))
1867 acpi_sci_flags = ACPI_MADT_TRIGGER_EDGE |
1868 (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK);
1869 else if (!strcmp(s, "level"))
1870 acpi_sci_flags = ACPI_MADT_TRIGGER_LEVEL |
1871 (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK);
1872 else if (!strcmp(s, "high"))
1873 acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_HIGH |
1874 (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK);
1875 else if (!strcmp(s, "low"))
1876 acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_LOW |
1877 (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK);
1878 else
1879 return -EINVAL;
1880 return 0;
1881 }
1882 early_param("acpi_sci", setup_acpi_sci);
1883
1884 int __acpi_acquire_global_lock(unsigned int *lock)
1885 {
1886 unsigned int old, new, val;
1887 do {
1888 old = *lock;
1889 new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1));
1890 val = cmpxchg(lock, old, new);
1891 } while (unlikely (val != old));
1892 return (new < 3) ? -1 : 0;
1893 }
1894
1895 int __acpi_release_global_lock(unsigned int *lock)
1896 {
1897 unsigned int old, new, val;
1898 do {
1899 old = *lock;
1900 new = old & ~0x3;
1901 val = cmpxchg(lock, old, new);
1902 } while (unlikely (val != old));
1903 return old & 0x1;
1904 }
kernel source for telekom puls (alcatel/mediatek)