Merge remote-tracking branch 'spi/topic/rspi' into spi-pdata
[deliverable/linux.git] / arch / x86 / kernel / acpi / boot.c
CommitLineData
1da177e4
LT
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>
1da177e4 27#include <linux/acpi.h>
d66bea57 28#include <linux/acpi_pmtmr.h>
1da177e4 29#include <linux/efi.h>
73fea175 30#include <linux/cpumask.h>
1da177e4 31#include <linux/module.h>
aea00143 32#include <linux/dmi.h>
b33fa1f3 33#include <linux/irq.h>
5a0e3ad6 34#include <linux/slab.h>
f0f4c343 35#include <linux/bootmem.h>
36#include <linux/ioport.h>
a31f8205 37#include <linux/pci.h>
1da177e4 38
b72d0db9 39#include <asm/pci_x86.h>
1da177e4
LT
40#include <asm/pgtable.h>
41#include <asm/io_apic.h>
42#include <asm/apic.h>
43#include <asm/io.h>
1da177e4 44#include <asm/mpspec.h>
dfac2189 45#include <asm/smp.h>
1da177e4 46
d6a77ead 47#include "sleep.h" /* To include x86_acpi_suspend_lowlevel */
e8924acb 48static int __initdata acpi_force = 0;
237889bf 49u32 acpi_rsdt_forced;
c636f753 50int acpi_disabled;
df3bb57d
AK
51EXPORT_SYMBOL(acpi_disabled);
52
1da177e4 53#ifdef CONFIG_X86_64
1dcdd3d1 54# include <asm/proto.h>
4be44fcd 55#endif /* X86 */
1da177e4
LT
56
57#define BAD_MADT_ENTRY(entry, end) ( \
58 (!entry) || (unsigned long)entry + sizeof(*entry) > end || \
5f3b1a8b 59 ((struct acpi_subtable_header *)entry)->length < sizeof(*entry))
1da177e4
LT
60
61#define PREFIX "ACPI: "
62
90d53909 63int acpi_noirq; /* skip ACPI IRQ initialization */
6e4be1ff
YL
64int acpi_pci_disabled; /* skip ACPI PCI scan and IRQ initialization */
65EXPORT_SYMBOL(acpi_pci_disabled);
1da177e4
LT
66
67int acpi_lapic;
68int acpi_ioapic;
69int acpi_strict;
1da177e4 70
5f3b1a8b 71u8 acpi_sci_flags __initdata;
1da177e4
LT
72int acpi_sci_override_gsi __initdata;
73int acpi_skip_timer_override __initdata;
fa18f477 74int acpi_use_timer_override __initdata;
7f74f8f2 75int acpi_fix_pin2_polarity __initdata;
1da177e4
LT
76
77#ifdef CONFIG_X86_LOCAL_APIC
78static u64 acpi_lapic_addr __initdata = APIC_DEFAULT_PHYS_BASE;
79#endif
80
81#ifndef __HAVE_ARCH_CMPXCHG
82#warning ACPI uses CMPXCHG, i486 and later hardware
83#endif
84
1da177e4
LT
85/* --------------------------------------------------------------------------
86 Boot-time Configuration
87 -------------------------------------------------------------------------- */
88
89/*
90 * The default interrupt routing model is PIC (8259). This gets
27b46d76 91 * overridden if IOAPICs are enumerated (below).
1da177e4 92 */
4be44fcd 93enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_PIC;
1da177e4 94
1da177e4 95
988856ee
EB
96/*
97 * ISA irqs by default are the first 16 gsis but can be
98 * any gsi as specified by an interrupt source override.
99 */
100static u32 isa_irq_to_gsi[NR_IRQS_LEGACY] __read_mostly = {
101 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15
102};
103
104static unsigned int gsi_to_irq(unsigned int gsi)
105{
106 unsigned int irq = gsi + NR_IRQS_LEGACY;
107 unsigned int i;
108
109 for (i = 0; i < NR_IRQS_LEGACY; i++) {
110 if (isa_irq_to_gsi[i] == gsi) {
111 return i;
112 }
113 }
114
115 /* Provide an identity mapping of gsi == irq
116 * except on truly weird platforms that have
117 * non isa irqs in the first 16 gsis.
118 */
119 if (gsi >= NR_IRQS_LEGACY)
120 irq = gsi;
121 else
a4384df3 122 irq = gsi_top + gsi;
988856ee
EB
123
124 return irq;
125}
126
127static u32 irq_to_gsi(int irq)
128{
129 unsigned int gsi;
130
131 if (irq < NR_IRQS_LEGACY)
132 gsi = isa_irq_to_gsi[irq];
a4384df3 133 else if (irq < gsi_top)
988856ee 134 gsi = irq;
a4384df3
EB
135 else if (irq < (gsi_top + NR_IRQS_LEGACY))
136 gsi = irq - gsi_top;
988856ee
EB
137 else
138 gsi = 0xffffffff;
139
140 return gsi;
141}
142
1da177e4
LT
143/*
144 * Temporarily use the virtual area starting from FIX_IO_APIC_BASE_END,
145 * to map the target physical address. The problem is that set_fixmap()
146 * provides a single page, and it is possible that the page is not
147 * sufficient.
148 * By using this area, we can map up to MAX_IO_APICS pages temporarily,
149 * i.e. until the next __va_range() call.
150 *
151 * Important Safety Note: The fixed I/O APIC page numbers are *subtracted*
152 * from the fixed base. That's why we start at FIX_IO_APIC_BASE_END and
153 * count idx down while incrementing the phys address.
154 */
2fdf0741 155char *__init __acpi_map_table(unsigned long phys, unsigned long size)
1da177e4 156{
1da177e4 157
f34fa82b
YL
158 if (!phys || !size)
159 return NULL;
160
7d97277b
YL
161 return early_ioremap(phys, size);
162}
163void __init __acpi_unmap_table(char *map, unsigned long size)
164{
165 if (!map || !size)
166 return;
1da177e4 167
7d97277b 168 early_iounmap(map, size);
1da177e4 169}
1da177e4 170
1da177e4 171#ifdef CONFIG_X86_LOCAL_APIC
15a58ed1 172static int __init acpi_parse_madt(struct acpi_table_header *table)
1da177e4 173{
4be44fcd 174 struct acpi_table_madt *madt = NULL;
1da177e4 175
15a58ed1 176 if (!cpu_has_apic)
1da177e4
LT
177 return -EINVAL;
178
15a58ed1 179 madt = (struct acpi_table_madt *)table;
1da177e4
LT
180 if (!madt) {
181 printk(KERN_WARNING PREFIX "Unable to map MADT\n");
182 return -ENODEV;
183 }
184
ad363f80
AS
185 if (madt->address) {
186 acpi_lapic_addr = (u64) madt->address;
1da177e4
LT
187
188 printk(KERN_DEBUG PREFIX "Local APIC address 0x%08x\n",
ad363f80 189 madt->address);
1da177e4
LT
190 }
191
306db03b
IM
192 default_acpi_madt_oem_check(madt->header.oem_id,
193 madt->header.oem_table_id);
4be44fcd 194
1da177e4
LT
195 return 0;
196}
197
148f9bb8 198static void acpi_register_lapic(int id, u8 enabled)
dfac2189 199{
fb3bbd6a
YL
200 unsigned int ver = 0;
201
d3bd0588
YL
202 if (id >= (MAX_LOCAL_APIC-1)) {
203 printk(KERN_INFO PREFIX "skipped apicid that is too big\n");
204 return;
205 }
206
dfac2189
AS
207 if (!enabled) {
208 ++disabled_cpus;
209 return;
210 }
211
fb3bbd6a
YL
212 if (boot_cpu_physical_apicid != -1U)
213 ver = apic_version[boot_cpu_physical_apicid];
fb3bbd6a
YL
214
215 generic_processor_info(id, ver);
dfac2189
AS
216}
217
7237d3de
SS
218static int __init
219acpi_parse_x2apic(struct acpi_subtable_header *header, const unsigned long end)
220{
221 struct acpi_madt_local_x2apic *processor = NULL;
a35fd282
YL
222 int apic_id;
223 u8 enabled;
7237d3de
SS
224
225 processor = (struct acpi_madt_local_x2apic *)header;
226
227 if (BAD_MADT_ENTRY(processor, end))
228 return -EINVAL;
229
230 acpi_table_print_madt_entry(header);
231
a35fd282
YL
232 apic_id = processor->local_apic_id;
233 enabled = processor->lapic_flags & ACPI_MADT_ENABLED;
7237d3de
SS
234#ifdef CONFIG_X86_X2APIC
235 /*
236 * We need to register disabled CPU as well to permit
237 * counting disabled CPUs. This allows us to size
238 * cpus_possible_map more accurately, to permit
239 * to not preallocating memory for all NR_CPUS
240 * when we use CPU hotplug.
241 */
b7157acf 242 if (!apic->apic_id_valid(apic_id) && enabled)
a35fd282
YL
243 printk(KERN_WARNING PREFIX "x2apic entry ignored\n");
244 else
245 acpi_register_lapic(apic_id, enabled);
7237d3de
SS
246#else
247 printk(KERN_WARNING PREFIX "x2apic entry ignored\n");
248#endif
249
250 return 0;
251}
252
1da177e4 253static int __init
5f3b1a8b 254acpi_parse_lapic(struct acpi_subtable_header * header, const unsigned long end)
1da177e4 255{
5f3b1a8b 256 struct acpi_madt_local_apic *processor = NULL;
1da177e4 257
5f3b1a8b 258 processor = (struct acpi_madt_local_apic *)header;
1da177e4
LT
259
260 if (BAD_MADT_ENTRY(processor, end))
261 return -EINVAL;
262
263 acpi_table_print_madt_entry(header);
264
7f66ae48
AR
265 /*
266 * We need to register disabled CPU as well to permit
267 * counting disabled CPUs. This allows us to size
268 * cpus_possible_map more accurately, to permit
269 * to not preallocating memory for all NR_CPUS
270 * when we use CPU hotplug.
271 */
dfac2189
AS
272 acpi_register_lapic(processor->id, /* APIC ID */
273 processor->lapic_flags & ACPI_MADT_ENABLED);
1da177e4
LT
274
275 return 0;
276}
277
ac049c1d
JS
278static int __init
279acpi_parse_sapic(struct acpi_subtable_header *header, const unsigned long end)
280{
281 struct acpi_madt_local_sapic *processor = NULL;
282
283 processor = (struct acpi_madt_local_sapic *)header;
284
285 if (BAD_MADT_ENTRY(processor, end))
286 return -EINVAL;
287
288 acpi_table_print_madt_entry(header);
289
dfac2189
AS
290 acpi_register_lapic((processor->id << 8) | processor->eid,/* APIC ID */
291 processor->lapic_flags & ACPI_MADT_ENABLED);
ac049c1d
JS
292
293 return 0;
294}
295
1da177e4 296static int __init
5f3b1a8b 297acpi_parse_lapic_addr_ovr(struct acpi_subtable_header * header,
4be44fcd 298 const unsigned long end)
1da177e4 299{
5f3b1a8b 300 struct acpi_madt_local_apic_override *lapic_addr_ovr = NULL;
1da177e4 301
5f3b1a8b 302 lapic_addr_ovr = (struct acpi_madt_local_apic_override *)header;
1da177e4
LT
303
304 if (BAD_MADT_ENTRY(lapic_addr_ovr, end))
305 return -EINVAL;
306
307 acpi_lapic_addr = lapic_addr_ovr->address;
308
309 return 0;
310}
311
7237d3de
SS
312static int __init
313acpi_parse_x2apic_nmi(struct acpi_subtable_header *header,
314 const unsigned long end)
315{
316 struct acpi_madt_local_x2apic_nmi *x2apic_nmi = NULL;
317
318 x2apic_nmi = (struct acpi_madt_local_x2apic_nmi *)header;
319
320 if (BAD_MADT_ENTRY(x2apic_nmi, end))
321 return -EINVAL;
322
323 acpi_table_print_madt_entry(header);
324
325 if (x2apic_nmi->lint != 1)
326 printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n");
327
328 return 0;
329}
330
1da177e4 331static int __init
5f3b1a8b 332acpi_parse_lapic_nmi(struct acpi_subtable_header * header, const unsigned long end)
1da177e4 333{
5f3b1a8b 334 struct acpi_madt_local_apic_nmi *lapic_nmi = NULL;
1da177e4 335
5f3b1a8b 336 lapic_nmi = (struct acpi_madt_local_apic_nmi *)header;
1da177e4
LT
337
338 if (BAD_MADT_ENTRY(lapic_nmi, end))
339 return -EINVAL;
340
341 acpi_table_print_madt_entry(header);
342
343 if (lapic_nmi->lint != 1)
344 printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n");
345
346 return 0;
347}
348
4be44fcd 349#endif /*CONFIG_X86_LOCAL_APIC */
1da177e4 350
8466361a 351#ifdef CONFIG_X86_IO_APIC
1da177e4
LT
352
353static int __init
5f3b1a8b 354acpi_parse_ioapic(struct acpi_subtable_header * header, const unsigned long end)
1da177e4 355{
5f3b1a8b 356 struct acpi_madt_io_apic *ioapic = NULL;
1da177e4 357
5f3b1a8b 358 ioapic = (struct acpi_madt_io_apic *)header;
1da177e4
LT
359
360 if (BAD_MADT_ENTRY(ioapic, end))
361 return -EINVAL;
4be44fcd 362
1da177e4
LT
363 acpi_table_print_madt_entry(header);
364
4be44fcd
LB
365 mp_register_ioapic(ioapic->id,
366 ioapic->address, ioapic->global_irq_base);
367
1da177e4
LT
368 return 0;
369}
370
371/*
372 * Parse Interrupt Source Override for the ACPI SCI
373 */
9d2062b8 374static void __init acpi_sci_ioapic_setup(u8 bus_irq, u16 polarity, u16 trigger, u32 gsi)
1da177e4
LT
375{
376 if (trigger == 0) /* compatible SCI trigger is level */
377 trigger = 3;
378
379 if (polarity == 0) /* compatible SCI polarity is low */
380 polarity = 3;
381
382 /* Command-line over-ride via acpi_sci= */
5f3b1a8b
AS
383 if (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK)
384 trigger = (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) >> 2;
1da177e4 385
5f3b1a8b
AS
386 if (acpi_sci_flags & ACPI_MADT_POLARITY_MASK)
387 polarity = acpi_sci_flags & ACPI_MADT_POLARITY_MASK;
1da177e4
LT
388
389 /*
4be44fcd 390 * mp_config_acpi_legacy_irqs() already setup IRQs < 16
1da177e4
LT
391 * If GSI is < 16, this will update its flags,
392 * else it will create a new mp_irqs[] entry.
393 */
9d2062b8 394 mp_override_legacy_irq(bus_irq, polarity, trigger, gsi);
1da177e4
LT
395
396 /*
397 * stash over-ride to indicate we've been here
cee324b1 398 * and for later update of acpi_gbl_FADT
1da177e4 399 */
7bdd21ce 400 acpi_sci_override_gsi = gsi;
1da177e4
LT
401 return;
402}
403
404static int __init
5f3b1a8b 405acpi_parse_int_src_ovr(struct acpi_subtable_header * header,
4be44fcd 406 const unsigned long end)
1da177e4 407{
5f3b1a8b 408 struct acpi_madt_interrupt_override *intsrc = NULL;
1da177e4 409
5f3b1a8b 410 intsrc = (struct acpi_madt_interrupt_override *)header;
1da177e4
LT
411
412 if (BAD_MADT_ENTRY(intsrc, end))
413 return -EINVAL;
414
415 acpi_table_print_madt_entry(header);
416
5f3b1a8b 417 if (intsrc->source_irq == acpi_gbl_FADT.sci_interrupt) {
9d2062b8 418 acpi_sci_ioapic_setup(intsrc->source_irq,
5f3b1a8b 419 intsrc->inti_flags & ACPI_MADT_POLARITY_MASK,
9d2062b8
EB
420 (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2,
421 intsrc->global_irq);
1da177e4
LT
422 return 0;
423 }
424
ae10ccdc 425 if (intsrc->source_irq == 0) {
7f74f8f2 426 if (acpi_skip_timer_override) {
ae10ccdc 427 printk(PREFIX "BIOS IRQ0 override ignored.\n");
7f74f8f2
AH
428 return 0;
429 }
ae10ccdc
FT
430
431 if ((intsrc->global_irq == 2) && acpi_fix_pin2_polarity
432 && (intsrc->inti_flags & ACPI_MADT_POLARITY_MASK)) {
7f74f8f2
AH
433 intsrc->inti_flags &= ~ACPI_MADT_POLARITY_MASK;
434 printk(PREFIX "BIOS IRQ0 pin2 override: forcing polarity to high active.\n");
435 }
1da177e4
LT
436 }
437
5f3b1a8b
AS
438 mp_override_legacy_irq(intsrc->source_irq,
439 intsrc->inti_flags & ACPI_MADT_POLARITY_MASK,
440 (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2,
441 intsrc->global_irq);
1da177e4
LT
442
443 return 0;
444}
445
1da177e4 446static int __init
5f3b1a8b 447acpi_parse_nmi_src(struct acpi_subtable_header * header, const unsigned long end)
1da177e4 448{
5f3b1a8b 449 struct acpi_madt_nmi_source *nmi_src = NULL;
1da177e4 450
5f3b1a8b 451 nmi_src = (struct acpi_madt_nmi_source *)header;
1da177e4
LT
452
453 if (BAD_MADT_ENTRY(nmi_src, end))
454 return -EINVAL;
455
456 acpi_table_print_madt_entry(header);
457
458 /* TBD: Support nimsrc entries? */
459
460 return 0;
461}
462
4be44fcd 463#endif /* CONFIG_X86_IO_APIC */
1da177e4 464
1da177e4
LT
465/*
466 * acpi_pic_sci_set_trigger()
5f3b1a8b 467 *
1da177e4
LT
468 * use ELCR to set PIC-mode trigger type for SCI
469 *
470 * If a PIC-mode SCI is not recognized or gives spurious IRQ7's
471 * it may require Edge Trigger -- use "acpi_sci=edge"
472 *
473 * Port 0x4d0-4d1 are ECLR1 and ECLR2, the Edge/Level Control Registers
474 * for the 8259 PIC. bit[n] = 1 means irq[n] is Level, otherwise Edge.
27b46d76
SA
475 * ECLR1 is IRQs 0-7 (IRQ 0, 1, 2 must be 0)
476 * ECLR2 is IRQs 8-15 (IRQ 8, 13 must be 0)
1da177e4
LT
477 */
478
4be44fcd 479void __init acpi_pic_sci_set_trigger(unsigned int irq, u16 trigger)
1da177e4
LT
480{
481 unsigned int mask = 1 << irq;
482 unsigned int old, new;
483
484 /* Real old ELCR mask */
485 old = inb(0x4d0) | (inb(0x4d1) << 8);
486
487 /*
27b46d76 488 * If we use ACPI to set PCI IRQs, then we should clear ELCR
1da177e4
LT
489 * since we will set it correctly as we enable the PCI irq
490 * routing.
491 */
492 new = acpi_noirq ? old : 0;
493
494 /*
495 * Update SCI information in the ELCR, it isn't in the PCI
496 * routing tables..
497 */
498 switch (trigger) {
4be44fcd 499 case 1: /* Edge - clear */
1da177e4
LT
500 new &= ~mask;
501 break;
4be44fcd 502 case 3: /* Level - set */
1da177e4
LT
503 new |= mask;
504 break;
505 }
506
507 if (old == new)
508 return;
509
510 printk(PREFIX "setting ELCR to %04x (from %04x)\n", new, old);
511 outb(new, 0x4d0);
512 outb(new >> 8, 0x4d1);
513}
514
1da177e4
LT
515int acpi_gsi_to_irq(u32 gsi, unsigned int *irq)
516{
988856ee 517 *irq = gsi_to_irq(gsi);
18dce6ba
YL
518
519#ifdef CONFIG_X86_IO_APIC
520 if (acpi_irq_model == ACPI_IRQ_MODEL_IOAPIC)
521 setup_IO_APIC_irq_extra(gsi);
522#endif
523
1da177e4
LT
524 return 0;
525}
81e88fdc 526EXPORT_SYMBOL_GPL(acpi_gsi_to_irq);
1da177e4 527
2c2df841
EB
528int acpi_isa_irq_to_gsi(unsigned isa_irq, u32 *gsi)
529{
530 if (isa_irq >= 16)
531 return -1;
988856ee 532 *gsi = irq_to_gsi(isa_irq);
2c2df841
EB
533 return 0;
534}
535
2f065aef
JF
536static int acpi_register_gsi_pic(struct device *dev, u32 gsi,
537 int trigger, int polarity)
1da177e4 538{
1da177e4
LT
539#ifdef CONFIG_PCI
540 /*
541 * Make sure all (legacy) PCI IRQs are set as level-triggered.
542 */
2f065aef
JF
543 if (trigger == ACPI_LEVEL_SENSITIVE)
544 eisa_set_level_irq(gsi);
1da177e4
LT
545#endif
546
2f065aef
JF
547 return gsi;
548}
549
550static int acpi_register_gsi_ioapic(struct device *dev, u32 gsi,
551 int trigger, int polarity)
552{
1da177e4 553#ifdef CONFIG_X86_IO_APIC
2f065aef 554 gsi = mp_register_gsi(dev, gsi, trigger, polarity);
1da177e4 555#endif
2f065aef
JF
556
557 return gsi;
558}
559
90f6881e
JF
560int (*__acpi_register_gsi)(struct device *dev, u32 gsi,
561 int trigger, int polarity) = acpi_register_gsi_pic;
2f065aef 562
d6a77ead
KRW
563#ifdef CONFIG_ACPI_SLEEP
564int (*acpi_suspend_lowlevel)(void) = x86_acpi_suspend_lowlevel;
565#else
566int (*acpi_suspend_lowlevel)(void);
567#endif
568
2f065aef
JF
569/*
570 * success: return IRQ number (>=0)
571 * failure: return < 0
572 */
573int acpi_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity)
574{
575 unsigned int irq;
576 unsigned int plat_gsi = gsi;
577
578 plat_gsi = (*__acpi_register_gsi)(dev, gsi, trigger, polarity);
988856ee 579 irq = gsi_to_irq(plat_gsi);
18dce6ba 580
1da177e4
LT
581 return irq;
582}
35e92b78
AS
583EXPORT_SYMBOL_GPL(acpi_register_gsi);
584
585void acpi_unregister_gsi(u32 gsi)
586{
587}
588EXPORT_SYMBOL_GPL(acpi_unregister_gsi);
4be44fcd 589
2f065aef
JF
590void __init acpi_set_irq_model_pic(void)
591{
592 acpi_irq_model = ACPI_IRQ_MODEL_PIC;
593 __acpi_register_gsi = acpi_register_gsi_pic;
594 acpi_ioapic = 0;
595}
596
597void __init acpi_set_irq_model_ioapic(void)
598{
599 acpi_irq_model = ACPI_IRQ_MODEL_IOAPIC;
600 __acpi_register_gsi = acpi_register_gsi_ioapic;
601 acpi_ioapic = 1;
602}
603
1da177e4
LT
604/*
605 * ACPI based hotplug support for CPU
606 */
607#ifdef CONFIG_ACPI_HOTPLUG_CPU
d8191fa4 608#include <acpi/processor.h>
009cbadb 609
148f9bb8 610static void acpi_map_cpu2node(acpi_handle handle, int cpu, int physid)
0271f910
HL
611{
612#ifdef CONFIG_ACPI_NUMA
613 int nid;
614
615 nid = acpi_get_node(handle);
616 if (nid == -1 || !node_online(nid))
617 return;
bbc9e2f4 618 set_apicid_to_node(physid, nid);
0271f910 619 numa_set_node(cpu, nid);
0271f910
HL
620#endif
621}
009cbadb 622
148f9bb8 623static int _acpi_map_lsapic(acpi_handle handle, int *pcpu)
1da177e4 624{
73fea175
AR
625 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
626 union acpi_object *obj;
5f3b1a8b 627 struct acpi_madt_local_apic *lapic;
ee943a82 628 cpumask_var_t tmp_map, new_map;
73fea175
AR
629 u8 physid;
630 int cpu;
ee943a82 631 int retval = -ENOMEM;
73fea175
AR
632
633 if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer)))
634 return -EINVAL;
635
636 if (!buffer.length || !buffer.pointer)
637 return -EINVAL;
638
639 obj = buffer.pointer;
640 if (obj->type != ACPI_TYPE_BUFFER ||
641 obj->buffer.length < sizeof(*lapic)) {
642 kfree(buffer.pointer);
643 return -EINVAL;
644 }
645
5f3b1a8b 646 lapic = (struct acpi_madt_local_apic *)obj->buffer.pointer;
73fea175 647
5f3b1a8b
AS
648 if (lapic->header.type != ACPI_MADT_TYPE_LOCAL_APIC ||
649 !(lapic->lapic_flags & ACPI_MADT_ENABLED)) {
73fea175
AR
650 kfree(buffer.pointer);
651 return -EINVAL;
652 }
653
654 physid = lapic->id;
655
656 kfree(buffer.pointer);
657 buffer.length = ACPI_ALLOCATE_BUFFER;
658 buffer.pointer = NULL;
ac909ec3 659 lapic = NULL;
73fea175 660
ee943a82
RR
661 if (!alloc_cpumask_var(&tmp_map, GFP_KERNEL))
662 goto out;
663
664 if (!alloc_cpumask_var(&new_map, GFP_KERNEL))
665 goto free_tmp_map;
666
667 cpumask_copy(tmp_map, cpu_present_mask);
ac909ec3 668 acpi_register_lapic(physid, ACPI_MADT_ENABLED);
73fea175
AR
669
670 /*
57c078ce 671 * If acpi_register_lapic successfully generates a new logical cpu
73fea175
AR
672 * number, then the following will get us exactly what was mapped
673 */
ee943a82
RR
674 cpumask_andnot(new_map, cpu_present_mask, tmp_map);
675 if (cpumask_empty(new_map)) {
73fea175 676 printk ("Unable to map lapic to logical cpu number\n");
ee943a82
RR
677 retval = -EINVAL;
678 goto free_new_map;
73fea175
AR
679 }
680
d8191fa4
AC
681 acpi_processor_set_pdc(handle);
682
ee943a82 683 cpu = cpumask_first(new_map);
0271f910 684 acpi_map_cpu2node(handle, cpu, physid);
73fea175
AR
685
686 *pcpu = cpu;
ee943a82
RR
687 retval = 0;
688
689free_new_map:
690 free_cpumask_var(new_map);
691free_tmp_map:
692 free_cpumask_var(tmp_map);
693out:
694 return retval;
1da177e4 695}
1da177e4 696
009cbadb
SR
697/* wrapper to silence section mismatch warning */
698int __ref acpi_map_lsapic(acpi_handle handle, int *pcpu)
699{
700 return _acpi_map_lsapic(handle, pcpu);
701}
4be44fcd 702EXPORT_SYMBOL(acpi_map_lsapic);
1da177e4 703
4be44fcd 704int acpi_unmap_lsapic(int cpu)
1da177e4 705{
c4c60524
WC
706#ifdef CONFIG_ACPI_NUMA
707 set_apicid_to_node(per_cpu(x86_cpu_to_apicid, cpu), NUMA_NO_NODE);
708#endif
709
71fff5e6 710 per_cpu(x86_cpu_to_apicid, cpu) = -1;
9628937d 711 set_cpu_present(cpu, false);
73fea175
AR
712 num_processors--;
713
714 return (0);
1da177e4 715}
4be44fcd 716
1da177e4 717EXPORT_SYMBOL(acpi_unmap_lsapic);
4be44fcd 718#endif /* CONFIG_ACPI_HOTPLUG_CPU */
1da177e4 719
4be44fcd 720int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base)
b1bb248a
KK
721{
722 /* TBD */
723 return -EINVAL;
724}
4be44fcd 725
b1bb248a
KK
726EXPORT_SYMBOL(acpi_register_ioapic);
727
4be44fcd 728int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base)
b1bb248a
KK
729{
730 /* TBD */
731 return -EINVAL;
732}
4be44fcd 733
b1bb248a
KK
734EXPORT_SYMBOL(acpi_unregister_ioapic);
735
5f3b1a8b 736static int __init acpi_parse_sbf(struct acpi_table_header *table)
1da177e4 737{
5f3b1a8b 738 struct acpi_table_boot *sb;
1da177e4 739
5f3b1a8b 740 sb = (struct acpi_table_boot *)table;
1da177e4
LT
741 if (!sb) {
742 printk(KERN_WARNING PREFIX "Unable to map SBF\n");
743 return -ENODEV;
744 }
745
5f3b1a8b 746 sbf_port = sb->cmos_index; /* Save CMOS port */
1da177e4
LT
747
748 return 0;
749}
750
1da177e4 751#ifdef CONFIG_HPET_TIMER
2d0c87c3 752#include <asm/hpet.h>
1da177e4 753
a1dfd851
AD
754static struct __initdata resource *hpet_res;
755
5f3b1a8b 756static int __init acpi_parse_hpet(struct acpi_table_header *table)
1da177e4
LT
757{
758 struct acpi_table_hpet *hpet_tbl;
759
5f3b1a8b 760 hpet_tbl = (struct acpi_table_hpet *)table;
1da177e4
LT
761 if (!hpet_tbl) {
762 printk(KERN_WARNING PREFIX "Unable to map HPET\n");
763 return -ENODEV;
764 }
765
ad363f80 766 if (hpet_tbl->address.space_id != ACPI_SPACE_MEM) {
1da177e4
LT
767 printk(KERN_WARNING PREFIX "HPET timers must be located in "
768 "memory.\n");
769 return -1;
770 }
f0f4c343 771
2d0c87c3 772 hpet_address = hpet_tbl->address.address;
c8bc6f3c 773 hpet_blockid = hpet_tbl->sequence;
f4df73c2
TG
774
775 /*
776 * Some broken BIOSes advertise HPET at 0x0. We really do not
777 * want to allocate a resource there.
778 */
779 if (!hpet_address) {
780 printk(KERN_WARNING PREFIX
781 "HPET id: %#x base: %#lx is invalid\n",
782 hpet_tbl->id, hpet_address);
783 return 0;
784 }
785#ifdef CONFIG_X86_64
786 /*
787 * Some even more broken BIOSes advertise HPET at
788 * 0xfed0000000000000 instead of 0xfed00000. Fix it up and add
789 * some noise:
790 */
791 if (hpet_address == 0xfed0000000000000UL) {
792 if (!hpet_force_user) {
793 printk(KERN_WARNING PREFIX "HPET id: %#x "
794 "base: 0xfed0000000000000 is bogus\n "
795 "try hpet=force on the kernel command line to "
796 "fix it up to 0xfed00000.\n", hpet_tbl->id);
797 hpet_address = 0;
798 return 0;
799 }
800 printk(KERN_WARNING PREFIX
801 "HPET id: %#x base: 0xfed0000000000000 fixed up "
802 "to 0xfed00000.\n", hpet_tbl->id);
803 hpet_address >>= 32;
804 }
805#endif
4be44fcd 806 printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n",
2d0c87c3 807 hpet_tbl->id, hpet_address);
1da177e4 808
a1dfd851
AD
809 /*
810 * Allocate and initialize the HPET firmware resource for adding into
811 * the resource tree during the lateinit timeframe.
812 */
813#define HPET_RESOURCE_NAME_SIZE 9
814 hpet_res = alloc_bootmem(sizeof(*hpet_res) + HPET_RESOURCE_NAME_SIZE);
815
a1dfd851
AD
816 hpet_res->name = (void *)&hpet_res[1];
817 hpet_res->flags = IORESOURCE_MEM;
818 snprintf((char *)hpet_res->name, HPET_RESOURCE_NAME_SIZE, "HPET %u",
819 hpet_tbl->sequence);
820
821 hpet_res->start = hpet_address;
822 hpet_res->end = hpet_address + (1 * 1024) - 1;
823
1da177e4
LT
824 return 0;
825}
a1dfd851
AD
826
827/*
828 * hpet_insert_resource inserts the HPET resources used into the resource
829 * tree.
830 */
831static __init int hpet_insert_resource(void)
832{
833 if (!hpet_res)
834 return 1;
835
836 return insert_resource(&iomem_resource, hpet_res);
837}
838
839late_initcall(hpet_insert_resource);
840
1da177e4
LT
841#else
842#define acpi_parse_hpet NULL
843#endif
844
5f3b1a8b 845static int __init acpi_parse_fadt(struct acpi_table_header *table)
1da177e4 846{
90660ec3 847
1da177e4
LT
848#ifdef CONFIG_X86_PM_TIMER
849 /* detect the location of the ACPI PM Timer */
5f3b1a8b 850 if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID) {
1da177e4 851 /* FADT rev. 2 */
5f3b1a8b 852 if (acpi_gbl_FADT.xpm_timer_block.space_id !=
4be44fcd 853 ACPI_ADR_SPACE_SYSTEM_IO)
1da177e4
LT
854 return 0;
855
5f3b1a8b 856 pmtmr_ioport = acpi_gbl_FADT.xpm_timer_block.address;
e6e87b4b
DSL
857 /*
858 * "X" fields are optional extensions to the original V1.0
859 * fields, so we must selectively expand V1.0 fields if the
860 * corresponding X field is zero.
861 */
862 if (!pmtmr_ioport)
5f3b1a8b 863 pmtmr_ioport = acpi_gbl_FADT.pm_timer_block;
1da177e4
LT
864 } else {
865 /* FADT rev. 1 */
5f3b1a8b 866 pmtmr_ioport = acpi_gbl_FADT.pm_timer_block;
1da177e4
LT
867 }
868 if (pmtmr_ioport)
4be44fcd
LB
869 printk(KERN_INFO PREFIX "PM-Timer IO Port: %#x\n",
870 pmtmr_ioport);
1da177e4
LT
871#endif
872 return 0;
873}
874
1da177e4
LT
875#ifdef CONFIG_X86_LOCAL_APIC
876/*
877 * Parse LAPIC entries in MADT
878 * returns 0 on success, < 0 on error
879 */
31d2092e 880
cbf9bd60
YL
881static int __init early_acpi_parse_madt_lapic_addr_ovr(void)
882{
883 int count;
884
885 if (!cpu_has_apic)
886 return -ENODEV;
887
888 /*
889 * Note that the LAPIC address is obtained from the MADT (32-bit value)
890 * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value).
891 */
892
893 count =
894 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE,
895 acpi_parse_lapic_addr_ovr, 0);
896 if (count < 0) {
897 printk(KERN_ERR PREFIX
898 "Error parsing LAPIC address override entry\n");
899 return count;
900 }
901
c0104d38 902 register_lapic_address(acpi_lapic_addr);
cbf9bd60
YL
903
904 return count;
905}
906
4be44fcd 907static int __init acpi_parse_madt_lapic_entries(void)
1da177e4
LT
908{
909 int count;
7237d3de 910 int x2count = 0;
1da177e4 911
0fcd2709
AK
912 if (!cpu_has_apic)
913 return -ENODEV;
914
5f3b1a8b 915 /*
1da177e4
LT
916 * Note that the LAPIC address is obtained from the MADT (32-bit value)
917 * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value).
918 */
919
4be44fcd 920 count =
5f3b1a8b 921 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE,
4be44fcd 922 acpi_parse_lapic_addr_ovr, 0);
1da177e4 923 if (count < 0) {
4be44fcd
LB
924 printk(KERN_ERR PREFIX
925 "Error parsing LAPIC address override entry\n");
1da177e4
LT
926 return count;
927 }
928
c0104d38 929 register_lapic_address(acpi_lapic_addr);
1da177e4 930
ac049c1d 931 count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_SAPIC,
cb2ded37 932 acpi_parse_sapic, MAX_LOCAL_APIC);
ac049c1d 933
7237d3de
SS
934 if (!count) {
935 x2count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC,
cb2ded37 936 acpi_parse_x2apic, MAX_LOCAL_APIC);
ac049c1d 937 count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC,
cb2ded37 938 acpi_parse_lapic, MAX_LOCAL_APIC);
7237d3de
SS
939 }
940 if (!count && !x2count) {
1da177e4
LT
941 printk(KERN_ERR PREFIX "No LAPIC entries present\n");
942 /* TBD: Cleanup to allow fallback to MPS */
943 return -ENODEV;
7237d3de 944 } else if (count < 0 || x2count < 0) {
1da177e4
LT
945 printk(KERN_ERR PREFIX "Error parsing LAPIC entry\n");
946 /* TBD: Cleanup to allow fallback to MPS */
947 return count;
948 }
949
7237d3de
SS
950 x2count =
951 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC_NMI,
952 acpi_parse_x2apic_nmi, 0);
4be44fcd 953 count =
5f3b1a8b 954 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI, acpi_parse_lapic_nmi, 0);
7237d3de 955 if (count < 0 || x2count < 0) {
1da177e4
LT
956 printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n");
957 /* TBD: Cleanup to allow fallback to MPS */
958 return count;
959 }
960 return 0;
961}
4be44fcd 962#endif /* CONFIG_X86_LOCAL_APIC */
1da177e4 963
8466361a 964#ifdef CONFIG_X86_IO_APIC
11113f84
AS
965#define MP_ISA_BUS 0
966
d49c4288 967#ifdef CONFIG_X86_ES7000
11113f84
AS
968extern int es7000_plat;
969#endif
970
11113f84
AS
971void __init mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger, u32 gsi)
972{
6df8809b
YL
973 int ioapic;
974 int pin;
c2c21745 975 struct mpc_intsrc mp_irq;
11113f84
AS
976
977 /*
978 * Convert 'gsi' to 'ioapic.pin'.
979 */
980 ioapic = mp_find_ioapic(gsi);
981 if (ioapic < 0)
982 return;
c3e137d1 983 pin = mp_find_ioapic_pin(ioapic, gsi);
11113f84
AS
984
985 /*
986 * TBD: This check is for faulty timer entries, where the override
987 * erroneously sets the trigger to level, resulting in a HUGE
988 * increase of timer interrupts!
989 */
990 if ((bus_irq == 0) && (trigger == 3))
991 trigger = 1;
992
c2c21745
JSR
993 mp_irq.type = MP_INTSRC;
994 mp_irq.irqtype = mp_INT;
995 mp_irq.irqflag = (trigger << 2) | polarity;
996 mp_irq.srcbus = MP_ISA_BUS;
997 mp_irq.srcbusirq = bus_irq; /* IRQ */
d5371430 998 mp_irq.dstapic = mpc_ioapic_id(ioapic); /* APIC ID */
c2c21745 999 mp_irq.dstirq = pin; /* INTIN# */
11113f84 1000
2d8009ba 1001 mp_save_irq(&mp_irq);
988856ee
EB
1002
1003 isa_irq_to_gsi[bus_irq] = gsi;
11113f84
AS
1004}
1005
1006void __init mp_config_acpi_legacy_irqs(void)
1007{
6df8809b 1008 int i;
c2c21745 1009 struct mpc_intsrc mp_irq;
11113f84 1010
bb8187d3 1011#ifdef CONFIG_EISA
11113f84
AS
1012 /*
1013 * Fabricate the legacy ISA bus (bus #31).
1014 */
1015 mp_bus_id_to_type[MP_ISA_BUS] = MP_BUS_ISA;
1016#endif
1017 set_bit(MP_ISA_BUS, mp_bus_not_pci);
cfc1b9a6 1018 pr_debug("Bus #%d is ISA\n", MP_ISA_BUS);
11113f84 1019
d49c4288 1020#ifdef CONFIG_X86_ES7000
11113f84
AS
1021 /*
1022 * Older generations of ES7000 have no legacy identity mappings
1023 */
1024 if (es7000_plat == 1)
1025 return;
1026#endif
1027
11113f84
AS
1028 /*
1029 * Use the default configuration for the IRQs 0-15. Unless
1030 * overridden by (MADT) interrupt source override entries.
1031 */
1032 for (i = 0; i < 16; i++) {
0fd52670
EB
1033 int ioapic, pin;
1034 unsigned int dstapic;
11113f84 1035 int idx;
0fd52670
EB
1036 u32 gsi;
1037
1038 /* Locate the gsi that irq i maps to. */
1039 if (acpi_isa_irq_to_gsi(i, &gsi))
1040 continue;
1041
1042 /*
1043 * Locate the IOAPIC that manages the ISA IRQ.
1044 */
1045 ioapic = mp_find_ioapic(gsi);
1046 if (ioapic < 0)
1047 continue;
1048 pin = mp_find_ioapic_pin(ioapic, gsi);
d5371430 1049 dstapic = mpc_ioapic_id(ioapic);
11113f84
AS
1050
1051 for (idx = 0; idx < mp_irq_entries; idx++) {
c2c21745 1052 struct mpc_intsrc *irq = mp_irqs + idx;
11113f84
AS
1053
1054 /* Do we already have a mapping for this ISA IRQ? */
c2c21745 1055 if (irq->srcbus == MP_ISA_BUS && irq->srcbusirq == i)
11113f84
AS
1056 break;
1057
1058 /* Do we already have a mapping for this IOAPIC pin */
0fd52670 1059 if (irq->dstapic == dstapic && irq->dstirq == pin)
11113f84
AS
1060 break;
1061 }
1062
1063 if (idx != mp_irq_entries) {
1064 printk(KERN_DEBUG "ACPI: IRQ%d used by override.\n", i);
1065 continue; /* IRQ already used */
1066 }
1067
c2c21745
JSR
1068 mp_irq.type = MP_INTSRC;
1069 mp_irq.irqflag = 0; /* Conforming */
1070 mp_irq.srcbus = MP_ISA_BUS;
1071 mp_irq.dstapic = dstapic;
1072 mp_irq.irqtype = mp_INT;
1073 mp_irq.srcbusirq = i; /* Identity mapped */
0fd52670 1074 mp_irq.dstirq = pin;
11113f84 1075
2d8009ba 1076 mp_save_irq(&mp_irq);
11113f84
AS
1077 }
1078}
1079
e5198075 1080static int mp_config_acpi_gsi(struct device *dev, u32 gsi, int trigger,
a31f8205
YL
1081 int polarity)
1082{
1083#ifdef CONFIG_X86_MPPARSE
1084 struct mpc_intsrc mp_irq;
1085 struct pci_dev *pdev;
1086 unsigned char number;
1087 unsigned int devfn;
1088 int ioapic;
1089 u8 pin;
1090
1091 if (!acpi_ioapic)
1092 return 0;
1093 if (!dev)
1094 return 0;
1095 if (dev->bus != &pci_bus_type)
1096 return 0;
1097
1098 pdev = to_pci_dev(dev);
1099 number = pdev->bus->number;
1100 devfn = pdev->devfn;
1101 pin = pdev->pin;
1102 /* print the entry should happen on mptable identically */
1103 mp_irq.type = MP_INTSRC;
1104 mp_irq.irqtype = mp_INT;
e5198075 1105 mp_irq.irqflag = (trigger == ACPI_EDGE_SENSITIVE ? 4 : 0x0c) |
a31f8205
YL
1106 (polarity == ACPI_ACTIVE_HIGH ? 1 : 3);
1107 mp_irq.srcbus = number;
1108 mp_irq.srcbusirq = (((devfn >> 3) & 0x1f) << 2) | ((pin - 1) & 3);
1109 ioapic = mp_find_ioapic(gsi);
d5371430 1110 mp_irq.dstapic = mpc_ioapic_id(ioapic);
a31f8205
YL
1111 mp_irq.dstirq = mp_find_ioapic_pin(ioapic, gsi);
1112
2d8009ba 1113 mp_save_irq(&mp_irq);
a31f8205
YL
1114#endif
1115 return 0;
1116}
1117
e5198075 1118int mp_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity)
11113f84
AS
1119{
1120 int ioapic;
1121 int ioapic_pin;
e5198075 1122 struct io_apic_irq_attr irq_attr;
11113f84
AS
1123
1124 if (acpi_irq_model != ACPI_IRQ_MODEL_IOAPIC)
1125 return gsi;
11113f84
AS
1126
1127 /* Don't set up the ACPI SCI because it's already set up */
1128 if (acpi_gbl_FADT.sci_interrupt == gsi)
1129 return gsi;
1130
1131 ioapic = mp_find_ioapic(gsi);
1132 if (ioapic < 0) {
1133 printk(KERN_WARNING "No IOAPIC for GSI %u\n", gsi);
1134 return gsi;
1135 }
1136
c3e137d1 1137 ioapic_pin = mp_find_ioapic_pin(ioapic, gsi);
11113f84 1138
11113f84
AS
1139 if (ioapic_pin > MP_MAX_IOAPIC_PIN) {
1140 printk(KERN_ERR "Invalid reference to IOAPIC pin "
d5371430 1141 "%d-%d\n", mpc_ioapic_id(ioapic),
11113f84
AS
1142 ioapic_pin);
1143 return gsi;
1144 }
f1bdb523
YL
1145
1146 if (enable_update_mptable)
1147 mp_config_acpi_gsi(dev, gsi, trigger, polarity);
b9e0353f 1148
e5198075
YL
1149 set_io_apic_irq_attr(&irq_attr, ioapic, ioapic_pin,
1150 trigger == ACPI_EDGE_SENSITIVE ? 0 : 1,
1151 polarity == ACPI_ACTIVE_HIGH ? 0 : 1);
988856ee 1152 io_apic_set_pci_routing(dev, gsi_to_irq(gsi), &irq_attr);
b9e0353f 1153
11113f84
AS
1154 return gsi;
1155}
1156
1da177e4
LT
1157/*
1158 * Parse IOAPIC related entries in MADT
1159 * returns 0 on success, < 0 on error
1160 */
4be44fcd 1161static int __init acpi_parse_madt_ioapic_entries(void)
1da177e4
LT
1162{
1163 int count;
1164
1165 /*
1166 * ACPI interpreter is required to complete interrupt setup,
1167 * so if it is off, don't enumerate the io-apics with ACPI.
1168 * If MPS is present, it will handle them,
1169 * otherwise the system will stay in PIC mode
1170 */
6b2b171a 1171 if (acpi_disabled || acpi_noirq)
1da177e4 1172 return -ENODEV;
1da177e4 1173
5f3b1a8b 1174 if (!cpu_has_apic)
d3b6a349
AK
1175 return -ENODEV;
1176
1da177e4 1177 /*
4be44fcd 1178 * if "noapic" boot option, don't look for IO-APICs
1da177e4
LT
1179 */
1180 if (skip_ioapic_setup) {
1181 printk(KERN_INFO PREFIX "Skipping IOAPIC probe "
4be44fcd 1182 "due to 'noapic' option.\n");
1da177e4
LT
1183 return -ENODEV;
1184 }
1185
4be44fcd 1186 count =
5f3b1a8b 1187 acpi_table_parse_madt(ACPI_MADT_TYPE_IO_APIC, acpi_parse_ioapic,
4be44fcd 1188 MAX_IO_APICS);
1da177e4
LT
1189 if (!count) {
1190 printk(KERN_ERR PREFIX "No IOAPIC entries present\n");
1191 return -ENODEV;
4be44fcd 1192 } else if (count < 0) {
1da177e4
LT
1193 printk(KERN_ERR PREFIX "Error parsing IOAPIC entry\n");
1194 return count;
1195 }
1196
4be44fcd 1197 count =
5f3b1a8b 1198 acpi_table_parse_madt(ACPI_MADT_TYPE_INTERRUPT_OVERRIDE, acpi_parse_int_src_ovr,
71f521bb 1199 nr_irqs);
1da177e4 1200 if (count < 0) {
4be44fcd
LB
1201 printk(KERN_ERR PREFIX
1202 "Error parsing interrupt source overrides entry\n");
1da177e4
LT
1203 /* TBD: Cleanup to allow fallback to MPS */
1204 return count;
1205 }
1206
1207 /*
1208 * If BIOS did not supply an INT_SRC_OVR for the SCI
1209 * pretend we got one so we can set the SCI flags.
1210 */
1211 if (!acpi_sci_override_gsi)
9d2062b8
EB
1212 acpi_sci_ioapic_setup(acpi_gbl_FADT.sci_interrupt, 0, 0,
1213 acpi_gbl_FADT.sci_interrupt);
1da177e4 1214
af901ca1 1215 /* Fill in identity legacy mappings where no override */
1da177e4
LT
1216 mp_config_acpi_legacy_irqs();
1217
4be44fcd 1218 count =
5f3b1a8b 1219 acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE, acpi_parse_nmi_src,
71f521bb 1220 nr_irqs);
1da177e4
LT
1221 if (count < 0) {
1222 printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n");
1223 /* TBD: Cleanup to allow fallback to MPS */
1224 return count;
1225 }
1226
1227 return 0;
1228}
1229#else
1230static inline int acpi_parse_madt_ioapic_entries(void)
1231{
1232 return -1;
1233}
8466361a 1234#endif /* !CONFIG_X86_IO_APIC */
1da177e4 1235
cbf9bd60
YL
1236static void __init early_acpi_process_madt(void)
1237{
1238#ifdef CONFIG_X86_LOCAL_APIC
1239 int error;
1240
1241 if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) {
1242
1243 /*
1244 * Parse MADT LAPIC entries
1245 */
1246 error = early_acpi_parse_madt_lapic_addr_ovr();
1247 if (!error) {
1248 acpi_lapic = 1;
1249 smp_found_config = 1;
1250 }
1251 if (error == -EINVAL) {
1252 /*
1253 * Dell Precision Workstation 410, 610 come here.
1254 */
1255 printk(KERN_ERR PREFIX
1256 "Invalid BIOS MADT, disabling ACPI\n");
1257 disable_acpi();
1258 }
1259 }
1260#endif
1261}
1262
4be44fcd 1263static void __init acpi_process_madt(void)
1da177e4
LT
1264{
1265#ifdef CONFIG_X86_LOCAL_APIC
7f8f97c3 1266 int error;
1da177e4 1267
7f8f97c3 1268 if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) {
1da177e4
LT
1269
1270 /*
1271 * Parse MADT LAPIC entries
1272 */
1273 error = acpi_parse_madt_lapic_entries();
1274 if (!error) {
1275 acpi_lapic = 1;
1276
1277 /*
1278 * Parse MADT IO-APIC entries
1279 */
1280 error = acpi_parse_madt_ioapic_entries();
1281 if (!error) {
2f065aef 1282 acpi_set_irq_model_ioapic();
1da177e4
LT
1283
1284 smp_found_config = 1;
1da177e4
LT
1285 }
1286 }
1287 if (error == -EINVAL) {
1288 /*
1289 * Dell Precision Workstation 410, 610 come here.
1290 */
4be44fcd
LB
1291 printk(KERN_ERR PREFIX
1292 "Invalid BIOS MADT, disabling ACPI\n");
1da177e4
LT
1293 disable_acpi();
1294 }
7b37b5fd
LB
1295 } else {
1296 /*
1297 * ACPI found no MADT, and so ACPI wants UP PIC mode.
1298 * In the event an MPS table was found, forget it.
1299 * Boot with "acpi=off" to use MPS on such a system.
1300 */
1301 if (smp_found_config) {
1302 printk(KERN_WARNING PREFIX
1303 "No APIC-table, disabling MPS\n");
1304 smp_found_config = 0;
1305 }
1da177e4 1306 }
69b88afa
YL
1307
1308 /*
1309 * ACPI supports both logical (e.g. Hyper-Threading) and physical
1310 * processors, where MPS only supports physical.
1311 */
1312 if (acpi_lapic && acpi_ioapic)
1313 printk(KERN_INFO "Using ACPI (MADT) for SMP configuration "
1314 "information\n");
1315 else if (acpi_lapic)
1316 printk(KERN_INFO "Using ACPI for processor (LAPIC) "
1317 "configuration information\n");
1da177e4
LT
1318#endif
1319 return;
1320}
1321
1855256c 1322static int __init disable_acpi_irq(const struct dmi_system_id *d)
aea00143
AP
1323{
1324 if (!acpi_force) {
1325 printk(KERN_NOTICE "%s detected: force use of acpi=noirq\n",
1326 d->ident);
1327 acpi_noirq_set();
1328 }
1329 return 0;
1330}
1331
1855256c 1332static int __init disable_acpi_pci(const struct dmi_system_id *d)
aea00143
AP
1333{
1334 if (!acpi_force) {
1335 printk(KERN_NOTICE "%s detected: force use of pci=noacpi\n",
1336 d->ident);
1337 acpi_disable_pci();
1338 }
1339 return 0;
1340}
aea00143 1341
1855256c 1342static int __init dmi_disable_acpi(const struct dmi_system_id *d)
aea00143
AP
1343{
1344 if (!acpi_force) {
4be44fcd 1345 printk(KERN_NOTICE "%s detected: acpi off\n", d->ident);
aea00143
AP
1346 disable_acpi();
1347 } else {
1348 printk(KERN_NOTICE
1349 "Warning: DMI blacklist says broken, but acpi forced\n");
1350 }
1351 return 0;
1352}
1353
e2079c43 1354/*
ae10ccdc 1355 * Force ignoring BIOS IRQ0 override
e2079c43
RW
1356 */
1357static int __init dmi_ignore_irq0_timer_override(const struct dmi_system_id *d)
1358{
8d89adf4 1359 if (!acpi_skip_timer_override) {
ae10ccdc 1360 pr_notice("%s detected: Ignoring BIOS IRQ0 override\n",
8d89adf4
IM
1361 d->ident);
1362 acpi_skip_timer_override = 1;
1363 }
e2079c43
RW
1364 return 0;
1365}
1366
aea00143
AP
1367/*
1368 * If your system is blacklisted here, but you find that acpi=force
5b4c0b6f 1369 * works for you, please contact linux-acpi@vger.kernel.org
aea00143
AP
1370 */
1371static struct dmi_system_id __initdata acpi_dmi_table[] = {
1372 /*
1373 * Boxes that need ACPI disabled
1374 */
1375 {
4be44fcd
LB
1376 .callback = dmi_disable_acpi,
1377 .ident = "IBM Thinkpad",
1378 .matches = {
1379 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1380 DMI_MATCH(DMI_BOARD_NAME, "2629H1G"),
1381 },
1382 },
aea00143 1383
aea00143
AP
1384 /*
1385 * Boxes that need ACPI PCI IRQ routing disabled
1386 */
1387 {
4be44fcd
LB
1388 .callback = disable_acpi_irq,
1389 .ident = "ASUS A7V",
1390 .matches = {
1391 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC"),
1392 DMI_MATCH(DMI_BOARD_NAME, "<A7V>"),
1393 /* newer BIOS, Revision 1011, does work */
1394 DMI_MATCH(DMI_BIOS_VERSION,
1395 "ASUS A7V ACPI BIOS Revision 1007"),
1396 },
1397 },
74586fca
LB
1398 {
1399 /*
1400 * Latest BIOS for IBM 600E (1.16) has bad pcinum
1401 * for LPC bridge, which is needed for the PCI
1402 * interrupt links to work. DSDT fix is in bug 5966.
1403 * 2645, 2646 model numbers are shared with 600/600E/600X
1404 */
1405 .callback = disable_acpi_irq,
1406 .ident = "IBM Thinkpad 600 Series 2645",
1407 .matches = {
1408 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1409 DMI_MATCH(DMI_BOARD_NAME, "2645"),
1410 },
1411 },
1412 {
1413 .callback = disable_acpi_irq,
1414 .ident = "IBM Thinkpad 600 Series 2646",
1415 .matches = {
1416 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1417 DMI_MATCH(DMI_BOARD_NAME, "2646"),
1418 },
1419 },
aea00143
AP
1420 /*
1421 * Boxes that need ACPI PCI IRQ routing and PCI scan disabled
1422 */
4be44fcd
LB
1423 { /* _BBN 0 bug */
1424 .callback = disable_acpi_pci,
1425 .ident = "ASUS PR-DLS",
1426 .matches = {
1427 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
1428 DMI_MATCH(DMI_BOARD_NAME, "PR-DLS"),
1429 DMI_MATCH(DMI_BIOS_VERSION,
1430 "ASUS PR-DLS ACPI BIOS Revision 1010"),
1431 DMI_MATCH(DMI_BIOS_DATE, "03/21/2003")
1432 },
1433 },
aea00143 1434 {
4be44fcd
LB
1435 .callback = disable_acpi_pci,
1436 .ident = "Acer TravelMate 36x Laptop",
1437 .matches = {
1438 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
1439 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 360"),
1440 },
1441 },
35af2821
AH
1442 {}
1443};
1444
1445/* second table for DMI checks that should run after early-quirks */
1446static struct dmi_system_id __initdata acpi_dmi_table_late[] = {
e2079c43
RW
1447 /*
1448 * HP laptops which use a DSDT reporting as HP/SB400/10000,
1449 * which includes some code which overrides all temperature
1450 * trip points to 16C if the INTIN2 input of the I/O APIC
1451 * is enabled. This input is incorrectly designated the
1452 * ISA IRQ 0 via an interrupt source override even though
1453 * it is wired to the output of the master 8259A and INTIN0
ae10ccdc 1454 * is not connected at all. Force ignoring BIOS IRQ0
e2079c43
RW
1455 * override in that cases.
1456 */
e84956f9
RW
1457 {
1458 .callback = dmi_ignore_irq0_timer_override,
1459 .ident = "HP nx6115 laptop",
1460 .matches = {
1461 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1462 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6115"),
1463 },
1464 },
e2079c43
RW
1465 {
1466 .callback = dmi_ignore_irq0_timer_override,
1467 .ident = "HP NX6125 laptop",
1468 .matches = {
1469 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1470 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6125"),
1471 },
1472 },
1473 {
1474 .callback = dmi_ignore_irq0_timer_override,
1475 .ident = "HP NX6325 laptop",
1476 .matches = {
1477 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1478 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6325"),
1479 },
1480 },
e84956f9
RW
1481 {
1482 .callback = dmi_ignore_irq0_timer_override,
1483 .ident = "HP 6715b laptop",
1484 .matches = {
1485 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1486 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq 6715b"),
1487 },
1488 },
f6b54f08
FT
1489 {
1490 .callback = dmi_ignore_irq0_timer_override,
1491 .ident = "FUJITSU SIEMENS",
1492 .matches = {
1493 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
1494 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO PRO V2030"),
1495 },
1496 },
4be44fcd 1497 {}
aea00143
AP
1498};
1499
1da177e4
LT
1500/*
1501 * acpi_boot_table_init() and acpi_boot_init()
1502 * called from setup_arch(), always.
1503 * 1. checksums all tables
1504 * 2. enumerates lapics
1505 * 3. enumerates io-apics
1506 *
1507 * acpi_table_init() is separate to allow reading SRAT without
1508 * other side effects.
1509 *
1510 * side effects of acpi_boot_init:
1511 * acpi_lapic = 1 if LAPIC found
1512 * acpi_ioapic = 1 if IOAPIC found
1513 * if (acpi_lapic && acpi_ioapic) smp_found_config = 1;
1514 * if acpi_blacklisted() acpi_disabled = 1;
1515 * acpi_irq_model=...
1516 * ...
1da177e4
LT
1517 */
1518
8558e394 1519void __init acpi_boot_table_init(void)
1da177e4 1520{
aea00143 1521 dmi_check_system(acpi_dmi_table);
aea00143 1522
1da177e4
LT
1523 /*
1524 * If acpi_disabled, bail out
1da177e4 1525 */
68ca4069 1526 if (acpi_disabled)
8558e394 1527 return;
1da177e4 1528
5f3b1a8b 1529 /*
1da177e4
LT
1530 * Initialize the ACPI boot-time table parser.
1531 */
8558e394 1532 if (acpi_table_init()) {
1da177e4 1533 disable_acpi();
8558e394 1534 return;
1da177e4 1535 }
1da177e4 1536
5f3b1a8b 1537 acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf);
1da177e4
LT
1538
1539 /*
1540 * blacklist may disable ACPI entirely
1541 */
8558e394 1542 if (acpi_blacklisted()) {
1da177e4
LT
1543 if (acpi_force) {
1544 printk(KERN_WARNING PREFIX "acpi=force override\n");
1545 } else {
1546 printk(KERN_WARNING PREFIX "Disabling ACPI support\n");
1547 disable_acpi();
8558e394 1548 return;
1da177e4
LT
1549 }
1550 }
cbf9bd60
YL
1551}
1552
1553int __init early_acpi_boot_init(void)
1554{
1555 /*
1556 * If acpi_disabled, bail out
cbf9bd60 1557 */
68ca4069 1558 if (acpi_disabled)
cbf9bd60
YL
1559 return 1;
1560
1561 /*
1562 * Process the Multiple APIC Description Table (MADT), if present
1563 */
1564 early_acpi_process_madt();
1da177e4
LT
1565
1566 return 0;
1567}
1568
1da177e4
LT
1569int __init acpi_boot_init(void)
1570{
35af2821
AH
1571 /* those are executed after early-quirks are executed */
1572 dmi_check_system(acpi_dmi_table_late);
1573
1da177e4
LT
1574 /*
1575 * If acpi_disabled, bail out
1da177e4 1576 */
68ca4069 1577 if (acpi_disabled)
4be44fcd 1578 return 1;
1da177e4 1579
5f3b1a8b 1580 acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf);
1da177e4
LT
1581
1582 /*
1583 * set sci_int and PM timer address
1584 */
ceb6c468 1585 acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt);
1da177e4
LT
1586
1587 /*
1588 * Process the Multiple APIC Description Table (MADT), if present
1589 */
1590 acpi_process_madt();
1591
5f3b1a8b 1592 acpi_table_parse(ACPI_SIG_HPET, acpi_parse_hpet);
1da177e4 1593
b72d0db9
TG
1594 if (!acpi_noirq)
1595 x86_init.pci.init = pci_acpi_init;
1596
1da177e4
LT
1597 return 0;
1598}
1a3f239d
RR
1599
1600static int __init parse_acpi(char *arg)
1601{
1602 if (!arg)
1603 return -EINVAL;
1604
1605 /* "acpi=off" disables both ACPI table parsing and interpreter */
1606 if (strcmp(arg, "off") == 0) {
1607 disable_acpi();
1608 }
1609 /* acpi=force to over-ride black-list */
1610 else if (strcmp(arg, "force") == 0) {
1611 acpi_force = 1;
1a3f239d
RR
1612 acpi_disabled = 0;
1613 }
1614 /* acpi=strict disables out-of-spec workarounds */
1615 else if (strcmp(arg, "strict") == 0) {
1616 acpi_strict = 1;
1617 }
237889bf
ZY
1618 /* acpi=rsdt use RSDT instead of XSDT */
1619 else if (strcmp(arg, "rsdt") == 0) {
1620 acpi_rsdt_forced = 1;
1621 }
1a3f239d
RR
1622 /* "acpi=noirq" disables ACPI interrupt routing */
1623 else if (strcmp(arg, "noirq") == 0) {
1624 acpi_noirq_set();
aa2110cb
LM
1625 }
1626 /* "acpi=copy_dsdt" copys DSDT */
1627 else if (strcmp(arg, "copy_dsdt") == 0) {
1628 acpi_gbl_copy_dsdt_locally = 1;
1a3f239d
RR
1629 } else {
1630 /* Core will printk when we return error. */
1631 return -EINVAL;
1632 }
1633 return 0;
1634}
1635early_param("acpi", parse_acpi);
1636
1637/* FIXME: Using pci= for an ACPI parameter is a travesty. */
1638static int __init parse_pci(char *arg)
1639{
1640 if (arg && strcmp(arg, "noacpi") == 0)
1641 acpi_disable_pci();
1642 return 0;
1643}
1644early_param("pci", parse_pci);
1645
3c999f14
YL
1646int __init acpi_mps_check(void)
1647{
1648#if defined(CONFIG_X86_LOCAL_APIC) && !defined(CONFIG_X86_MPPARSE)
1649/* mptable code is not built-in*/
1650 if (acpi_disabled || acpi_noirq) {
1651 printk(KERN_WARNING "MPS support code is not built-in.\n"
1652 "Using acpi=off or acpi=noirq or pci=noacpi "
1653 "may have problem\n");
1654 return 1;
1655 }
1656#endif
1657 return 0;
1658}
1659
1a3f239d
RR
1660#ifdef CONFIG_X86_IO_APIC
1661static int __init parse_acpi_skip_timer_override(char *arg)
1662{
1663 acpi_skip_timer_override = 1;
1664 return 0;
1665}
1666early_param("acpi_skip_timer_override", parse_acpi_skip_timer_override);
fa18f477
AK
1667
1668static int __init parse_acpi_use_timer_override(char *arg)
1669{
1670 acpi_use_timer_override = 1;
1671 return 0;
1672}
1673early_param("acpi_use_timer_override", parse_acpi_use_timer_override);
1a3f239d
RR
1674#endif /* CONFIG_X86_IO_APIC */
1675
1676static int __init setup_acpi_sci(char *s)
1677{
1678 if (!s)
1679 return -EINVAL;
1680 if (!strcmp(s, "edge"))
5f3b1a8b
AS
1681 acpi_sci_flags = ACPI_MADT_TRIGGER_EDGE |
1682 (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK);
1a3f239d 1683 else if (!strcmp(s, "level"))
5f3b1a8b
AS
1684 acpi_sci_flags = ACPI_MADT_TRIGGER_LEVEL |
1685 (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK);
1a3f239d 1686 else if (!strcmp(s, "high"))
5f3b1a8b
AS
1687 acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_HIGH |
1688 (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK);
1a3f239d 1689 else if (!strcmp(s, "low"))
5f3b1a8b
AS
1690 acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_LOW |
1691 (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK);
1a3f239d
RR
1692 else
1693 return -EINVAL;
1694 return 0;
1695}
1696early_param("acpi_sci", setup_acpi_sci);
d0a9081b
AM
1697
1698int __acpi_acquire_global_lock(unsigned int *lock)
1699{
1700 unsigned int old, new, val;
1701 do {
1702 old = *lock;
1703 new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1));
1704 val = cmpxchg(lock, old, new);
1705 } while (unlikely (val != old));
1706 return (new < 3) ? -1 : 0;
1707}
1708
1709int __acpi_release_global_lock(unsigned int *lock)
1710{
1711 unsigned int old, new, val;
1712 do {
1713 old = *lock;
1714 new = old & ~0x3;
1715 val = cmpxchg(lock, old, new);
1716 } while (unlikely (val != old));
1717 return old & 0x1;
1718}
8e30524d
TR
1719
1720void __init arch_reserve_mem_area(acpi_physical_address addr, size_t size)
1721{
1722 e820_add_region(addr, size, E820_ACPI);
1723 update_e820();
1724}
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