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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 AD |
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 | 48 | static int __initdata acpi_force = 0; |
c636f753 | 49 | int acpi_disabled; |
df3bb57d AK |
50 | EXPORT_SYMBOL(acpi_disabled); |
51 | ||
1da177e4 | 52 | #ifdef CONFIG_X86_64 |
1dcdd3d1 | 53 | # include <asm/proto.h> |
4be44fcd | 54 | #endif /* X86 */ |
1da177e4 LT |
55 | |
56 | #define BAD_MADT_ENTRY(entry, end) ( \ | |
57 | (!entry) || (unsigned long)entry + sizeof(*entry) > end || \ | |
5f3b1a8b | 58 | ((struct acpi_subtable_header *)entry)->length < sizeof(*entry)) |
1da177e4 LT |
59 | |
60 | #define PREFIX "ACPI: " | |
61 | ||
90d53909 | 62 | int acpi_noirq; /* skip ACPI IRQ initialization */ |
6e4be1ff YL |
63 | int acpi_pci_disabled; /* skip ACPI PCI scan and IRQ initialization */ |
64 | EXPORT_SYMBOL(acpi_pci_disabled); | |
1da177e4 LT |
65 | |
66 | int acpi_lapic; | |
67 | int acpi_ioapic; | |
68 | int acpi_strict; | |
9ad95879 | 69 | int acpi_disable_cmcff; |
1da177e4 | 70 | |
5f3b1a8b | 71 | u8 acpi_sci_flags __initdata; |
1da177e4 LT |
72 | int acpi_sci_override_gsi __initdata; |
73 | int acpi_skip_timer_override __initdata; | |
fa18f477 | 74 | int acpi_use_timer_override __initdata; |
7f74f8f2 | 75 | int acpi_fix_pin2_polarity __initdata; |
1da177e4 LT |
76 | |
77 | #ifdef CONFIG_X86_LOCAL_APIC | |
78 | static u64 acpi_lapic_addr __initdata = APIC_DEFAULT_PHYS_BASE; | |
79 | #endif | |
80 | ||
81 | #ifndef __HAVE_ARCH_CMPXCHG | |
82 | #warning ACPI uses CMPXCHG, i486 and later hardware | |
83 | #endif | |
84 | ||
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 | 93 | enum 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 | */ | |
100 | static u32 isa_irq_to_gsi[NR_IRQS_LEGACY] __read_mostly = { | |
101 | 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 | |
102 | }; | |
103 | ||
104 | static unsigned int gsi_to_irq(unsigned int gsi) | |
105 | { | |
106 | unsigned int irq = gsi + NR_IRQS_LEGACY; | |
107 | unsigned int i; | |
108 | ||
109 | for (i = 0; i < NR_IRQS_LEGACY; i++) { | |
110 | if (isa_irq_to_gsi[i] == gsi) { | |
111 | return i; | |
112 | } | |
113 | } | |
114 | ||
115 | /* Provide an identity mapping of gsi == irq | |
116 | * except on truly weird platforms that have | |
117 | * non isa irqs in the first 16 gsis. | |
118 | */ | |
119 | if (gsi >= NR_IRQS_LEGACY) | |
120 | irq = gsi; | |
121 | else | |
a4384df3 | 122 | irq = gsi_top + gsi; |
988856ee EB |
123 | |
124 | return irq; | |
125 | } | |
126 | ||
127 | static u32 irq_to_gsi(int irq) | |
128 | { | |
129 | unsigned int gsi; | |
130 | ||
131 | if (irq < NR_IRQS_LEGACY) | |
132 | gsi = isa_irq_to_gsi[irq]; | |
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 | 143 | /* |
45f1330a ZY |
144 | * This is just a simple wrapper around early_ioremap(), |
145 | * with sanity checks for phys == 0 and size == 0. | |
1da177e4 | 146 | */ |
2fdf0741 | 147 | char *__init __acpi_map_table(unsigned long phys, unsigned long size) |
1da177e4 | 148 | { |
1da177e4 | 149 | |
f34fa82b YL |
150 | if (!phys || !size) |
151 | return NULL; | |
152 | ||
7d97277b YL |
153 | return early_ioremap(phys, size); |
154 | } | |
45f1330a | 155 | |
7d97277b YL |
156 | void __init __acpi_unmap_table(char *map, unsigned long size) |
157 | { | |
158 | if (!map || !size) | |
159 | return; | |
1da177e4 | 160 | |
7d97277b | 161 | early_iounmap(map, size); |
1da177e4 | 162 | } |
1da177e4 | 163 | |
1da177e4 | 164 | #ifdef CONFIG_X86_LOCAL_APIC |
15a58ed1 | 165 | static int __init acpi_parse_madt(struct acpi_table_header *table) |
1da177e4 | 166 | { |
4be44fcd | 167 | struct acpi_table_madt *madt = NULL; |
1da177e4 | 168 | |
15a58ed1 | 169 | if (!cpu_has_apic) |
1da177e4 LT |
170 | return -EINVAL; |
171 | ||
15a58ed1 | 172 | madt = (struct acpi_table_madt *)table; |
1da177e4 LT |
173 | if (!madt) { |
174 | printk(KERN_WARNING PREFIX "Unable to map MADT\n"); | |
175 | return -ENODEV; | |
176 | } | |
177 | ||
ad363f80 AS |
178 | if (madt->address) { |
179 | acpi_lapic_addr = (u64) madt->address; | |
1da177e4 LT |
180 | |
181 | printk(KERN_DEBUG PREFIX "Local APIC address 0x%08x\n", | |
ad363f80 | 182 | madt->address); |
1da177e4 LT |
183 | } |
184 | ||
306db03b IM |
185 | default_acpi_madt_oem_check(madt->header.oem_id, |
186 | madt->header.oem_table_id); | |
4be44fcd | 187 | |
1da177e4 LT |
188 | return 0; |
189 | } | |
190 | ||
7e1f85f9 JL |
191 | /** |
192 | * acpi_register_lapic - register a local apic and generates a logic cpu number | |
193 | * @id: local apic id to register | |
194 | * @enabled: this cpu is enabled or not | |
195 | * | |
196 | * Returns the logic cpu number which maps to the local apic | |
197 | */ | |
198 | static int acpi_register_lapic(int id, u8 enabled) | |
dfac2189 | 199 | { |
fb3bbd6a YL |
200 | unsigned int ver = 0; |
201 | ||
82982d72 | 202 | if (id >= MAX_LOCAL_APIC) { |
d3bd0588 | 203 | printk(KERN_INFO PREFIX "skipped apicid that is too big\n"); |
7e1f85f9 | 204 | return -EINVAL; |
d3bd0588 YL |
205 | } |
206 | ||
dfac2189 AS |
207 | if (!enabled) { |
208 | ++disabled_cpus; | |
7e1f85f9 | 209 | return -EINVAL; |
dfac2189 AS |
210 | } |
211 | ||
fb3bbd6a YL |
212 | if (boot_cpu_physical_apicid != -1U) |
213 | ver = apic_version[boot_cpu_physical_apicid]; | |
fb3bbd6a | 214 | |
7e1f85f9 | 215 | return generic_processor_info(id, ver); |
dfac2189 AS |
216 | } |
217 | ||
7237d3de SS |
218 | static int __init |
219 | acpi_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 | 253 | static int __init |
5f3b1a8b | 254 | acpi_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 |
278 | static int __init |
279 | acpi_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 | 296 | static int __init |
5f3b1a8b | 297 | acpi_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 |
312 | static int __init |
313 | acpi_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 | 331 | static int __init |
5f3b1a8b | 332 | acpi_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 | |
353 | static int __init | |
5f3b1a8b | 354 | acpi_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 | 374 | static 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 | ||
404 | static int __init | |
5f3b1a8b | 405 | acpi_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 | 446 | static int __init |
5f3b1a8b | 447 | acpi_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 | 479 | void __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 |
515 | int 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 | 526 | EXPORT_SYMBOL_GPL(acpi_gsi_to_irq); |
1da177e4 | 527 | |
2c2df841 EB |
528 | int 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 |
536 | static 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 | ||
550 | static 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 |
560 | int (*__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 |
564 | int (*acpi_suspend_lowlevel)(void) = x86_acpi_suspend_lowlevel; | |
565 | #else | |
566 | int (*acpi_suspend_lowlevel)(void); | |
567 | #endif | |
568 | ||
2f065aef JF |
569 | /* |
570 | * success: return IRQ number (>=0) | |
571 | * failure: return < 0 | |
572 | */ | |
573 | int 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 |
583 | EXPORT_SYMBOL_GPL(acpi_register_gsi); |
584 | ||
585 | void acpi_unregister_gsi(u32 gsi) | |
586 | { | |
587 | } | |
588 | EXPORT_SYMBOL_GPL(acpi_unregister_gsi); | |
4be44fcd | 589 | |
2f065aef JF |
590 | void __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 | ||
597 | void __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 | 610 | static 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 | |
d536bf3d | 623 | static int _acpi_map_lsapic(acpi_handle handle, int physid, int *pcpu) |
1da177e4 | 624 | { |
73fea175 | 625 | int cpu; |
ee943a82 | 626 | |
7e1f85f9 JL |
627 | cpu = acpi_register_lapic(physid, ACPI_MADT_ENABLED); |
628 | if (cpu < 0) { | |
629 | pr_info(PREFIX "Unable to map lapic to logical cpu number\n"); | |
630 | return cpu; | |
73fea175 AR |
631 | } |
632 | ||
d8191fa4 | 633 | acpi_processor_set_pdc(handle); |
0271f910 | 634 | acpi_map_cpu2node(handle, cpu, physid); |
73fea175 AR |
635 | |
636 | *pcpu = cpu; | |
7e1f85f9 | 637 | return 0; |
1da177e4 | 638 | } |
1da177e4 | 639 | |
009cbadb | 640 | /* wrapper to silence section mismatch warning */ |
d536bf3d | 641 | int __ref acpi_map_lsapic(acpi_handle handle, int physid, int *pcpu) |
009cbadb | 642 | { |
d536bf3d | 643 | return _acpi_map_lsapic(handle, physid, pcpu); |
009cbadb | 644 | } |
4be44fcd | 645 | EXPORT_SYMBOL(acpi_map_lsapic); |
1da177e4 | 646 | |
4be44fcd | 647 | int acpi_unmap_lsapic(int cpu) |
1da177e4 | 648 | { |
c4c60524 WC |
649 | #ifdef CONFIG_ACPI_NUMA |
650 | set_apicid_to_node(per_cpu(x86_cpu_to_apicid, cpu), NUMA_NO_NODE); | |
651 | #endif | |
652 | ||
71fff5e6 | 653 | per_cpu(x86_cpu_to_apicid, cpu) = -1; |
9628937d | 654 | set_cpu_present(cpu, false); |
73fea175 AR |
655 | num_processors--; |
656 | ||
657 | return (0); | |
1da177e4 | 658 | } |
4be44fcd | 659 | |
1da177e4 | 660 | EXPORT_SYMBOL(acpi_unmap_lsapic); |
4be44fcd | 661 | #endif /* CONFIG_ACPI_HOTPLUG_CPU */ |
1da177e4 | 662 | |
4be44fcd | 663 | int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base) |
b1bb248a KK |
664 | { |
665 | /* TBD */ | |
666 | return -EINVAL; | |
667 | } | |
4be44fcd | 668 | |
b1bb248a KK |
669 | EXPORT_SYMBOL(acpi_register_ioapic); |
670 | ||
4be44fcd | 671 | int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base) |
b1bb248a KK |
672 | { |
673 | /* TBD */ | |
674 | return -EINVAL; | |
675 | } | |
4be44fcd | 676 | |
b1bb248a KK |
677 | EXPORT_SYMBOL(acpi_unregister_ioapic); |
678 | ||
5f3b1a8b | 679 | static int __init acpi_parse_sbf(struct acpi_table_header *table) |
1da177e4 | 680 | { |
5f3b1a8b | 681 | struct acpi_table_boot *sb; |
1da177e4 | 682 | |
5f3b1a8b | 683 | sb = (struct acpi_table_boot *)table; |
1da177e4 LT |
684 | if (!sb) { |
685 | printk(KERN_WARNING PREFIX "Unable to map SBF\n"); | |
686 | return -ENODEV; | |
687 | } | |
688 | ||
5f3b1a8b | 689 | sbf_port = sb->cmos_index; /* Save CMOS port */ |
1da177e4 LT |
690 | |
691 | return 0; | |
692 | } | |
693 | ||
1da177e4 | 694 | #ifdef CONFIG_HPET_TIMER |
2d0c87c3 | 695 | #include <asm/hpet.h> |
1da177e4 | 696 | |
dd96dc32 | 697 | static struct resource *hpet_res __initdata; |
a1dfd851 | 698 | |
5f3b1a8b | 699 | static int __init acpi_parse_hpet(struct acpi_table_header *table) |
1da177e4 LT |
700 | { |
701 | struct acpi_table_hpet *hpet_tbl; | |
702 | ||
5f3b1a8b | 703 | hpet_tbl = (struct acpi_table_hpet *)table; |
1da177e4 LT |
704 | if (!hpet_tbl) { |
705 | printk(KERN_WARNING PREFIX "Unable to map HPET\n"); | |
706 | return -ENODEV; | |
707 | } | |
708 | ||
ad363f80 | 709 | if (hpet_tbl->address.space_id != ACPI_SPACE_MEM) { |
1da177e4 LT |
710 | printk(KERN_WARNING PREFIX "HPET timers must be located in " |
711 | "memory.\n"); | |
712 | return -1; | |
713 | } | |
f0f4c343 | 714 | |
2d0c87c3 | 715 | hpet_address = hpet_tbl->address.address; |
c8bc6f3c | 716 | hpet_blockid = hpet_tbl->sequence; |
f4df73c2 TG |
717 | |
718 | /* | |
719 | * Some broken BIOSes advertise HPET at 0x0. We really do not | |
720 | * want to allocate a resource there. | |
721 | */ | |
722 | if (!hpet_address) { | |
723 | printk(KERN_WARNING PREFIX | |
724 | "HPET id: %#x base: %#lx is invalid\n", | |
725 | hpet_tbl->id, hpet_address); | |
726 | return 0; | |
727 | } | |
728 | #ifdef CONFIG_X86_64 | |
729 | /* | |
730 | * Some even more broken BIOSes advertise HPET at | |
731 | * 0xfed0000000000000 instead of 0xfed00000. Fix it up and add | |
732 | * some noise: | |
733 | */ | |
734 | if (hpet_address == 0xfed0000000000000UL) { | |
735 | if (!hpet_force_user) { | |
736 | printk(KERN_WARNING PREFIX "HPET id: %#x " | |
737 | "base: 0xfed0000000000000 is bogus\n " | |
738 | "try hpet=force on the kernel command line to " | |
739 | "fix it up to 0xfed00000.\n", hpet_tbl->id); | |
740 | hpet_address = 0; | |
741 | return 0; | |
742 | } | |
743 | printk(KERN_WARNING PREFIX | |
744 | "HPET id: %#x base: 0xfed0000000000000 fixed up " | |
745 | "to 0xfed00000.\n", hpet_tbl->id); | |
746 | hpet_address >>= 32; | |
747 | } | |
748 | #endif | |
4be44fcd | 749 | printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n", |
2d0c87c3 | 750 | hpet_tbl->id, hpet_address); |
1da177e4 | 751 | |
a1dfd851 AD |
752 | /* |
753 | * Allocate and initialize the HPET firmware resource for adding into | |
754 | * the resource tree during the lateinit timeframe. | |
755 | */ | |
756 | #define HPET_RESOURCE_NAME_SIZE 9 | |
757 | hpet_res = alloc_bootmem(sizeof(*hpet_res) + HPET_RESOURCE_NAME_SIZE); | |
758 | ||
a1dfd851 AD |
759 | hpet_res->name = (void *)&hpet_res[1]; |
760 | hpet_res->flags = IORESOURCE_MEM; | |
761 | snprintf((char *)hpet_res->name, HPET_RESOURCE_NAME_SIZE, "HPET %u", | |
762 | hpet_tbl->sequence); | |
763 | ||
764 | hpet_res->start = hpet_address; | |
765 | hpet_res->end = hpet_address + (1 * 1024) - 1; | |
766 | ||
1da177e4 LT |
767 | return 0; |
768 | } | |
a1dfd851 AD |
769 | |
770 | /* | |
771 | * hpet_insert_resource inserts the HPET resources used into the resource | |
772 | * tree. | |
773 | */ | |
774 | static __init int hpet_insert_resource(void) | |
775 | { | |
776 | if (!hpet_res) | |
777 | return 1; | |
778 | ||
779 | return insert_resource(&iomem_resource, hpet_res); | |
780 | } | |
781 | ||
782 | late_initcall(hpet_insert_resource); | |
783 | ||
1da177e4 LT |
784 | #else |
785 | #define acpi_parse_hpet NULL | |
786 | #endif | |
787 | ||
5f3b1a8b | 788 | static int __init acpi_parse_fadt(struct acpi_table_header *table) |
1da177e4 | 789 | { |
90660ec3 | 790 | |
1da177e4 LT |
791 | #ifdef CONFIG_X86_PM_TIMER |
792 | /* detect the location of the ACPI PM Timer */ | |
5f3b1a8b | 793 | if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID) { |
1da177e4 | 794 | /* FADT rev. 2 */ |
5f3b1a8b | 795 | if (acpi_gbl_FADT.xpm_timer_block.space_id != |
4be44fcd | 796 | ACPI_ADR_SPACE_SYSTEM_IO) |
1da177e4 LT |
797 | return 0; |
798 | ||
5f3b1a8b | 799 | pmtmr_ioport = acpi_gbl_FADT.xpm_timer_block.address; |
e6e87b4b DSL |
800 | /* |
801 | * "X" fields are optional extensions to the original V1.0 | |
802 | * fields, so we must selectively expand V1.0 fields if the | |
803 | * corresponding X field is zero. | |
804 | */ | |
805 | if (!pmtmr_ioport) | |
5f3b1a8b | 806 | pmtmr_ioport = acpi_gbl_FADT.pm_timer_block; |
1da177e4 LT |
807 | } else { |
808 | /* FADT rev. 1 */ | |
5f3b1a8b | 809 | pmtmr_ioport = acpi_gbl_FADT.pm_timer_block; |
1da177e4 LT |
810 | } |
811 | if (pmtmr_ioport) | |
4be44fcd LB |
812 | printk(KERN_INFO PREFIX "PM-Timer IO Port: %#x\n", |
813 | pmtmr_ioport); | |
1da177e4 LT |
814 | #endif |
815 | return 0; | |
816 | } | |
817 | ||
1da177e4 LT |
818 | #ifdef CONFIG_X86_LOCAL_APIC |
819 | /* | |
820 | * Parse LAPIC entries in MADT | |
821 | * returns 0 on success, < 0 on error | |
822 | */ | |
31d2092e | 823 | |
cbf9bd60 YL |
824 | static int __init early_acpi_parse_madt_lapic_addr_ovr(void) |
825 | { | |
826 | int count; | |
827 | ||
828 | if (!cpu_has_apic) | |
829 | return -ENODEV; | |
830 | ||
831 | /* | |
832 | * Note that the LAPIC address is obtained from the MADT (32-bit value) | |
833 | * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value). | |
834 | */ | |
835 | ||
836 | count = | |
837 | acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE, | |
838 | acpi_parse_lapic_addr_ovr, 0); | |
839 | if (count < 0) { | |
840 | printk(KERN_ERR PREFIX | |
841 | "Error parsing LAPIC address override entry\n"); | |
842 | return count; | |
843 | } | |
844 | ||
c0104d38 | 845 | register_lapic_address(acpi_lapic_addr); |
cbf9bd60 YL |
846 | |
847 | return count; | |
848 | } | |
849 | ||
4be44fcd | 850 | static int __init acpi_parse_madt_lapic_entries(void) |
1da177e4 LT |
851 | { |
852 | int count; | |
7237d3de | 853 | int x2count = 0; |
1da177e4 | 854 | |
0fcd2709 AK |
855 | if (!cpu_has_apic) |
856 | return -ENODEV; | |
857 | ||
5f3b1a8b | 858 | /* |
1da177e4 LT |
859 | * Note that the LAPIC address is obtained from the MADT (32-bit value) |
860 | * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value). | |
861 | */ | |
862 | ||
4be44fcd | 863 | count = |
5f3b1a8b | 864 | acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE, |
4be44fcd | 865 | acpi_parse_lapic_addr_ovr, 0); |
1da177e4 | 866 | if (count < 0) { |
4be44fcd LB |
867 | printk(KERN_ERR PREFIX |
868 | "Error parsing LAPIC address override entry\n"); | |
1da177e4 LT |
869 | return count; |
870 | } | |
871 | ||
c0104d38 | 872 | register_lapic_address(acpi_lapic_addr); |
1da177e4 | 873 | |
ac049c1d | 874 | count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_SAPIC, |
cb2ded37 | 875 | acpi_parse_sapic, MAX_LOCAL_APIC); |
ac049c1d | 876 | |
7237d3de SS |
877 | if (!count) { |
878 | x2count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC, | |
cb2ded37 | 879 | acpi_parse_x2apic, MAX_LOCAL_APIC); |
ac049c1d | 880 | count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC, |
cb2ded37 | 881 | acpi_parse_lapic, MAX_LOCAL_APIC); |
7237d3de SS |
882 | } |
883 | if (!count && !x2count) { | |
1da177e4 LT |
884 | printk(KERN_ERR PREFIX "No LAPIC entries present\n"); |
885 | /* TBD: Cleanup to allow fallback to MPS */ | |
886 | return -ENODEV; | |
7237d3de | 887 | } else if (count < 0 || x2count < 0) { |
1da177e4 LT |
888 | printk(KERN_ERR PREFIX "Error parsing LAPIC entry\n"); |
889 | /* TBD: Cleanup to allow fallback to MPS */ | |
890 | return count; | |
891 | } | |
892 | ||
7237d3de SS |
893 | x2count = |
894 | acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC_NMI, | |
895 | acpi_parse_x2apic_nmi, 0); | |
4be44fcd | 896 | count = |
5f3b1a8b | 897 | acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI, acpi_parse_lapic_nmi, 0); |
7237d3de | 898 | if (count < 0 || x2count < 0) { |
1da177e4 LT |
899 | printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n"); |
900 | /* TBD: Cleanup to allow fallback to MPS */ | |
901 | return count; | |
902 | } | |
903 | return 0; | |
904 | } | |
4be44fcd | 905 | #endif /* CONFIG_X86_LOCAL_APIC */ |
1da177e4 | 906 | |
8466361a | 907 | #ifdef CONFIG_X86_IO_APIC |
11113f84 AS |
908 | #define MP_ISA_BUS 0 |
909 | ||
d49c4288 | 910 | #ifdef CONFIG_X86_ES7000 |
11113f84 AS |
911 | extern int es7000_plat; |
912 | #endif | |
913 | ||
11113f84 AS |
914 | void __init mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger, u32 gsi) |
915 | { | |
6df8809b YL |
916 | int ioapic; |
917 | int pin; | |
c2c21745 | 918 | struct mpc_intsrc mp_irq; |
11113f84 AS |
919 | |
920 | /* | |
921 | * Convert 'gsi' to 'ioapic.pin'. | |
922 | */ | |
923 | ioapic = mp_find_ioapic(gsi); | |
924 | if (ioapic < 0) | |
925 | return; | |
c3e137d1 | 926 | pin = mp_find_ioapic_pin(ioapic, gsi); |
11113f84 AS |
927 | |
928 | /* | |
929 | * TBD: This check is for faulty timer entries, where the override | |
930 | * erroneously sets the trigger to level, resulting in a HUGE | |
931 | * increase of timer interrupts! | |
932 | */ | |
933 | if ((bus_irq == 0) && (trigger == 3)) | |
934 | trigger = 1; | |
935 | ||
c2c21745 JSR |
936 | mp_irq.type = MP_INTSRC; |
937 | mp_irq.irqtype = mp_INT; | |
938 | mp_irq.irqflag = (trigger << 2) | polarity; | |
939 | mp_irq.srcbus = MP_ISA_BUS; | |
940 | mp_irq.srcbusirq = bus_irq; /* IRQ */ | |
d5371430 | 941 | mp_irq.dstapic = mpc_ioapic_id(ioapic); /* APIC ID */ |
c2c21745 | 942 | mp_irq.dstirq = pin; /* INTIN# */ |
11113f84 | 943 | |
2d8009ba | 944 | mp_save_irq(&mp_irq); |
988856ee EB |
945 | |
946 | isa_irq_to_gsi[bus_irq] = gsi; | |
11113f84 AS |
947 | } |
948 | ||
949 | void __init mp_config_acpi_legacy_irqs(void) | |
950 | { | |
6df8809b | 951 | int i; |
c2c21745 | 952 | struct mpc_intsrc mp_irq; |
11113f84 | 953 | |
bb8187d3 | 954 | #ifdef CONFIG_EISA |
11113f84 AS |
955 | /* |
956 | * Fabricate the legacy ISA bus (bus #31). | |
957 | */ | |
958 | mp_bus_id_to_type[MP_ISA_BUS] = MP_BUS_ISA; | |
959 | #endif | |
960 | set_bit(MP_ISA_BUS, mp_bus_not_pci); | |
cfc1b9a6 | 961 | pr_debug("Bus #%d is ISA\n", MP_ISA_BUS); |
11113f84 | 962 | |
d49c4288 | 963 | #ifdef CONFIG_X86_ES7000 |
11113f84 AS |
964 | /* |
965 | * Older generations of ES7000 have no legacy identity mappings | |
966 | */ | |
967 | if (es7000_plat == 1) | |
968 | return; | |
969 | #endif | |
970 | ||
11113f84 AS |
971 | /* |
972 | * Use the default configuration for the IRQs 0-15. Unless | |
973 | * overridden by (MADT) interrupt source override entries. | |
974 | */ | |
975 | for (i = 0; i < 16; i++) { | |
0fd52670 EB |
976 | int ioapic, pin; |
977 | unsigned int dstapic; | |
11113f84 | 978 | int idx; |
0fd52670 EB |
979 | u32 gsi; |
980 | ||
981 | /* Locate the gsi that irq i maps to. */ | |
982 | if (acpi_isa_irq_to_gsi(i, &gsi)) | |
983 | continue; | |
984 | ||
985 | /* | |
986 | * Locate the IOAPIC that manages the ISA IRQ. | |
987 | */ | |
988 | ioapic = mp_find_ioapic(gsi); | |
989 | if (ioapic < 0) | |
990 | continue; | |
991 | pin = mp_find_ioapic_pin(ioapic, gsi); | |
d5371430 | 992 | dstapic = mpc_ioapic_id(ioapic); |
11113f84 AS |
993 | |
994 | for (idx = 0; idx < mp_irq_entries; idx++) { | |
c2c21745 | 995 | struct mpc_intsrc *irq = mp_irqs + idx; |
11113f84 AS |
996 | |
997 | /* Do we already have a mapping for this ISA IRQ? */ | |
c2c21745 | 998 | if (irq->srcbus == MP_ISA_BUS && irq->srcbusirq == i) |
11113f84 AS |
999 | break; |
1000 | ||
1001 | /* Do we already have a mapping for this IOAPIC pin */ | |
0fd52670 | 1002 | if (irq->dstapic == dstapic && irq->dstirq == pin) |
11113f84 AS |
1003 | break; |
1004 | } | |
1005 | ||
1006 | if (idx != mp_irq_entries) { | |
1007 | printk(KERN_DEBUG "ACPI: IRQ%d used by override.\n", i); | |
1008 | continue; /* IRQ already used */ | |
1009 | } | |
1010 | ||
c2c21745 JSR |
1011 | mp_irq.type = MP_INTSRC; |
1012 | mp_irq.irqflag = 0; /* Conforming */ | |
1013 | mp_irq.srcbus = MP_ISA_BUS; | |
1014 | mp_irq.dstapic = dstapic; | |
1015 | mp_irq.irqtype = mp_INT; | |
1016 | mp_irq.srcbusirq = i; /* Identity mapped */ | |
0fd52670 | 1017 | mp_irq.dstirq = pin; |
11113f84 | 1018 | |
2d8009ba | 1019 | mp_save_irq(&mp_irq); |
11113f84 AS |
1020 | } |
1021 | } | |
1022 | ||
e5198075 | 1023 | static int mp_config_acpi_gsi(struct device *dev, u32 gsi, int trigger, |
a31f8205 YL |
1024 | int polarity) |
1025 | { | |
1026 | #ifdef CONFIG_X86_MPPARSE | |
1027 | struct mpc_intsrc mp_irq; | |
1028 | struct pci_dev *pdev; | |
1029 | unsigned char number; | |
1030 | unsigned int devfn; | |
1031 | int ioapic; | |
1032 | u8 pin; | |
1033 | ||
1034 | if (!acpi_ioapic) | |
1035 | return 0; | |
894d3343 | 1036 | if (!dev || !dev_is_pci(dev)) |
a31f8205 YL |
1037 | return 0; |
1038 | ||
1039 | pdev = to_pci_dev(dev); | |
1040 | number = pdev->bus->number; | |
1041 | devfn = pdev->devfn; | |
1042 | pin = pdev->pin; | |
1043 | /* print the entry should happen on mptable identically */ | |
1044 | mp_irq.type = MP_INTSRC; | |
1045 | mp_irq.irqtype = mp_INT; | |
e5198075 | 1046 | mp_irq.irqflag = (trigger == ACPI_EDGE_SENSITIVE ? 4 : 0x0c) | |
a31f8205 YL |
1047 | (polarity == ACPI_ACTIVE_HIGH ? 1 : 3); |
1048 | mp_irq.srcbus = number; | |
1049 | mp_irq.srcbusirq = (((devfn >> 3) & 0x1f) << 2) | ((pin - 1) & 3); | |
1050 | ioapic = mp_find_ioapic(gsi); | |
d5371430 | 1051 | mp_irq.dstapic = mpc_ioapic_id(ioapic); |
a31f8205 YL |
1052 | mp_irq.dstirq = mp_find_ioapic_pin(ioapic, gsi); |
1053 | ||
2d8009ba | 1054 | mp_save_irq(&mp_irq); |
a31f8205 YL |
1055 | #endif |
1056 | return 0; | |
1057 | } | |
1058 | ||
e5198075 | 1059 | int mp_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity) |
11113f84 AS |
1060 | { |
1061 | int ioapic; | |
1062 | int ioapic_pin; | |
e5198075 | 1063 | struct io_apic_irq_attr irq_attr; |
25aa2957 | 1064 | int ret; |
11113f84 AS |
1065 | |
1066 | if (acpi_irq_model != ACPI_IRQ_MODEL_IOAPIC) | |
1067 | return gsi; | |
11113f84 AS |
1068 | |
1069 | /* Don't set up the ACPI SCI because it's already set up */ | |
1070 | if (acpi_gbl_FADT.sci_interrupt == gsi) | |
1071 | return gsi; | |
1072 | ||
1073 | ioapic = mp_find_ioapic(gsi); | |
1074 | if (ioapic < 0) { | |
1075 | printk(KERN_WARNING "No IOAPIC for GSI %u\n", gsi); | |
1076 | return gsi; | |
1077 | } | |
1078 | ||
c3e137d1 | 1079 | ioapic_pin = mp_find_ioapic_pin(ioapic, gsi); |
11113f84 | 1080 | |
11113f84 AS |
1081 | if (ioapic_pin > MP_MAX_IOAPIC_PIN) { |
1082 | printk(KERN_ERR "Invalid reference to IOAPIC pin " | |
d5371430 | 1083 | "%d-%d\n", mpc_ioapic_id(ioapic), |
11113f84 AS |
1084 | ioapic_pin); |
1085 | return gsi; | |
1086 | } | |
f1bdb523 YL |
1087 | |
1088 | if (enable_update_mptable) | |
1089 | mp_config_acpi_gsi(dev, gsi, trigger, polarity); | |
b9e0353f | 1090 | |
e5198075 YL |
1091 | set_io_apic_irq_attr(&irq_attr, ioapic, ioapic_pin, |
1092 | trigger == ACPI_EDGE_SENSITIVE ? 0 : 1, | |
1093 | polarity == ACPI_ACTIVE_HIGH ? 0 : 1); | |
25aa2957 LPF |
1094 | ret = io_apic_set_pci_routing(dev, gsi_to_irq(gsi), &irq_attr); |
1095 | if (ret < 0) | |
1096 | gsi = INT_MIN; | |
b9e0353f | 1097 | |
11113f84 AS |
1098 | return gsi; |
1099 | } | |
1100 | ||
1da177e4 LT |
1101 | /* |
1102 | * Parse IOAPIC related entries in MADT | |
1103 | * returns 0 on success, < 0 on error | |
1104 | */ | |
4be44fcd | 1105 | static int __init acpi_parse_madt_ioapic_entries(void) |
1da177e4 LT |
1106 | { |
1107 | int count; | |
1108 | ||
1109 | /* | |
1110 | * ACPI interpreter is required to complete interrupt setup, | |
1111 | * so if it is off, don't enumerate the io-apics with ACPI. | |
1112 | * If MPS is present, it will handle them, | |
1113 | * otherwise the system will stay in PIC mode | |
1114 | */ | |
6b2b171a | 1115 | if (acpi_disabled || acpi_noirq) |
1da177e4 | 1116 | return -ENODEV; |
1da177e4 | 1117 | |
5f3b1a8b | 1118 | if (!cpu_has_apic) |
d3b6a349 AK |
1119 | return -ENODEV; |
1120 | ||
1da177e4 | 1121 | /* |
4be44fcd | 1122 | * if "noapic" boot option, don't look for IO-APICs |
1da177e4 LT |
1123 | */ |
1124 | if (skip_ioapic_setup) { | |
1125 | printk(KERN_INFO PREFIX "Skipping IOAPIC probe " | |
4be44fcd | 1126 | "due to 'noapic' option.\n"); |
1da177e4 LT |
1127 | return -ENODEV; |
1128 | } | |
1129 | ||
4be44fcd | 1130 | count = |
5f3b1a8b | 1131 | acpi_table_parse_madt(ACPI_MADT_TYPE_IO_APIC, acpi_parse_ioapic, |
4be44fcd | 1132 | MAX_IO_APICS); |
1da177e4 LT |
1133 | if (!count) { |
1134 | printk(KERN_ERR PREFIX "No IOAPIC entries present\n"); | |
1135 | return -ENODEV; | |
4be44fcd | 1136 | } else if (count < 0) { |
1da177e4 LT |
1137 | printk(KERN_ERR PREFIX "Error parsing IOAPIC entry\n"); |
1138 | return count; | |
1139 | } | |
1140 | ||
4be44fcd | 1141 | count = |
5f3b1a8b | 1142 | acpi_table_parse_madt(ACPI_MADT_TYPE_INTERRUPT_OVERRIDE, acpi_parse_int_src_ovr, |
71f521bb | 1143 | nr_irqs); |
1da177e4 | 1144 | if (count < 0) { |
4be44fcd LB |
1145 | printk(KERN_ERR PREFIX |
1146 | "Error parsing interrupt source overrides entry\n"); | |
1da177e4 LT |
1147 | /* TBD: Cleanup to allow fallback to MPS */ |
1148 | return count; | |
1149 | } | |
1150 | ||
1151 | /* | |
1152 | * If BIOS did not supply an INT_SRC_OVR for the SCI | |
1153 | * pretend we got one so we can set the SCI flags. | |
1154 | */ | |
1155 | if (!acpi_sci_override_gsi) | |
9d2062b8 EB |
1156 | acpi_sci_ioapic_setup(acpi_gbl_FADT.sci_interrupt, 0, 0, |
1157 | acpi_gbl_FADT.sci_interrupt); | |
1da177e4 | 1158 | |
af901ca1 | 1159 | /* Fill in identity legacy mappings where no override */ |
1da177e4 LT |
1160 | mp_config_acpi_legacy_irqs(); |
1161 | ||
4be44fcd | 1162 | count = |
5f3b1a8b | 1163 | acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE, acpi_parse_nmi_src, |
71f521bb | 1164 | nr_irqs); |
1da177e4 LT |
1165 | if (count < 0) { |
1166 | printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n"); | |
1167 | /* TBD: Cleanup to allow fallback to MPS */ | |
1168 | return count; | |
1169 | } | |
1170 | ||
1171 | return 0; | |
1172 | } | |
1173 | #else | |
1174 | static inline int acpi_parse_madt_ioapic_entries(void) | |
1175 | { | |
1176 | return -1; | |
1177 | } | |
8466361a | 1178 | #endif /* !CONFIG_X86_IO_APIC */ |
1da177e4 | 1179 | |
cbf9bd60 YL |
1180 | static void __init early_acpi_process_madt(void) |
1181 | { | |
1182 | #ifdef CONFIG_X86_LOCAL_APIC | |
1183 | int error; | |
1184 | ||
1185 | if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) { | |
1186 | ||
1187 | /* | |
1188 | * Parse MADT LAPIC entries | |
1189 | */ | |
1190 | error = early_acpi_parse_madt_lapic_addr_ovr(); | |
1191 | if (!error) { | |
1192 | acpi_lapic = 1; | |
1193 | smp_found_config = 1; | |
1194 | } | |
1195 | if (error == -EINVAL) { | |
1196 | /* | |
1197 | * Dell Precision Workstation 410, 610 come here. | |
1198 | */ | |
1199 | printk(KERN_ERR PREFIX | |
1200 | "Invalid BIOS MADT, disabling ACPI\n"); | |
1201 | disable_acpi(); | |
1202 | } | |
1203 | } | |
1204 | #endif | |
1205 | } | |
1206 | ||
4be44fcd | 1207 | static void __init acpi_process_madt(void) |
1da177e4 LT |
1208 | { |
1209 | #ifdef CONFIG_X86_LOCAL_APIC | |
7f8f97c3 | 1210 | int error; |
1da177e4 | 1211 | |
7f8f97c3 | 1212 | if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) { |
1da177e4 LT |
1213 | |
1214 | /* | |
1215 | * Parse MADT LAPIC entries | |
1216 | */ | |
1217 | error = acpi_parse_madt_lapic_entries(); | |
1218 | if (!error) { | |
1219 | acpi_lapic = 1; | |
1220 | ||
1221 | /* | |
1222 | * Parse MADT IO-APIC entries | |
1223 | */ | |
1224 | error = acpi_parse_madt_ioapic_entries(); | |
1225 | if (!error) { | |
2f065aef | 1226 | acpi_set_irq_model_ioapic(); |
1da177e4 LT |
1227 | |
1228 | smp_found_config = 1; | |
1da177e4 LT |
1229 | } |
1230 | } | |
1231 | if (error == -EINVAL) { | |
1232 | /* | |
1233 | * Dell Precision Workstation 410, 610 come here. | |
1234 | */ | |
4be44fcd LB |
1235 | printk(KERN_ERR PREFIX |
1236 | "Invalid BIOS MADT, disabling ACPI\n"); | |
1da177e4 LT |
1237 | disable_acpi(); |
1238 | } | |
7b37b5fd LB |
1239 | } else { |
1240 | /* | |
1241 | * ACPI found no MADT, and so ACPI wants UP PIC mode. | |
1242 | * In the event an MPS table was found, forget it. | |
1243 | * Boot with "acpi=off" to use MPS on such a system. | |
1244 | */ | |
1245 | if (smp_found_config) { | |
1246 | printk(KERN_WARNING PREFIX | |
1247 | "No APIC-table, disabling MPS\n"); | |
1248 | smp_found_config = 0; | |
1249 | } | |
1da177e4 | 1250 | } |
69b88afa YL |
1251 | |
1252 | /* | |
1253 | * ACPI supports both logical (e.g. Hyper-Threading) and physical | |
1254 | * processors, where MPS only supports physical. | |
1255 | */ | |
1256 | if (acpi_lapic && acpi_ioapic) | |
1257 | printk(KERN_INFO "Using ACPI (MADT) for SMP configuration " | |
1258 | "information\n"); | |
1259 | else if (acpi_lapic) | |
1260 | printk(KERN_INFO "Using ACPI for processor (LAPIC) " | |
1261 | "configuration information\n"); | |
1da177e4 LT |
1262 | #endif |
1263 | return; | |
1264 | } | |
1265 | ||
1855256c | 1266 | static int __init disable_acpi_irq(const struct dmi_system_id *d) |
aea00143 AP |
1267 | { |
1268 | if (!acpi_force) { | |
1269 | printk(KERN_NOTICE "%s detected: force use of acpi=noirq\n", | |
1270 | d->ident); | |
1271 | acpi_noirq_set(); | |
1272 | } | |
1273 | return 0; | |
1274 | } | |
1275 | ||
1855256c | 1276 | static int __init disable_acpi_pci(const struct dmi_system_id *d) |
aea00143 AP |
1277 | { |
1278 | if (!acpi_force) { | |
1279 | printk(KERN_NOTICE "%s detected: force use of pci=noacpi\n", | |
1280 | d->ident); | |
1281 | acpi_disable_pci(); | |
1282 | } | |
1283 | return 0; | |
1284 | } | |
aea00143 | 1285 | |
1855256c | 1286 | static int __init dmi_disable_acpi(const struct dmi_system_id *d) |
aea00143 AP |
1287 | { |
1288 | if (!acpi_force) { | |
4be44fcd | 1289 | printk(KERN_NOTICE "%s detected: acpi off\n", d->ident); |
aea00143 AP |
1290 | disable_acpi(); |
1291 | } else { | |
1292 | printk(KERN_NOTICE | |
1293 | "Warning: DMI blacklist says broken, but acpi forced\n"); | |
1294 | } | |
1295 | return 0; | |
1296 | } | |
1297 | ||
e2079c43 | 1298 | /* |
ae10ccdc | 1299 | * Force ignoring BIOS IRQ0 override |
e2079c43 RW |
1300 | */ |
1301 | static int __init dmi_ignore_irq0_timer_override(const struct dmi_system_id *d) | |
1302 | { | |
8d89adf4 | 1303 | if (!acpi_skip_timer_override) { |
ae10ccdc | 1304 | pr_notice("%s detected: Ignoring BIOS IRQ0 override\n", |
8d89adf4 IM |
1305 | d->ident); |
1306 | acpi_skip_timer_override = 1; | |
1307 | } | |
e2079c43 RW |
1308 | return 0; |
1309 | } | |
1310 | ||
aea00143 AP |
1311 | /* |
1312 | * If your system is blacklisted here, but you find that acpi=force | |
5b4c0b6f | 1313 | * works for you, please contact linux-acpi@vger.kernel.org |
aea00143 AP |
1314 | */ |
1315 | static struct dmi_system_id __initdata acpi_dmi_table[] = { | |
1316 | /* | |
1317 | * Boxes that need ACPI disabled | |
1318 | */ | |
1319 | { | |
4be44fcd LB |
1320 | .callback = dmi_disable_acpi, |
1321 | .ident = "IBM Thinkpad", | |
1322 | .matches = { | |
1323 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), | |
1324 | DMI_MATCH(DMI_BOARD_NAME, "2629H1G"), | |
1325 | }, | |
1326 | }, | |
aea00143 | 1327 | |
aea00143 AP |
1328 | /* |
1329 | * Boxes that need ACPI PCI IRQ routing disabled | |
1330 | */ | |
1331 | { | |
4be44fcd LB |
1332 | .callback = disable_acpi_irq, |
1333 | .ident = "ASUS A7V", | |
1334 | .matches = { | |
1335 | DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC"), | |
1336 | DMI_MATCH(DMI_BOARD_NAME, "<A7V>"), | |
1337 | /* newer BIOS, Revision 1011, does work */ | |
1338 | DMI_MATCH(DMI_BIOS_VERSION, | |
1339 | "ASUS A7V ACPI BIOS Revision 1007"), | |
1340 | }, | |
1341 | }, | |
74586fca LB |
1342 | { |
1343 | /* | |
1344 | * Latest BIOS for IBM 600E (1.16) has bad pcinum | |
1345 | * for LPC bridge, which is needed for the PCI | |
1346 | * interrupt links to work. DSDT fix is in bug 5966. | |
1347 | * 2645, 2646 model numbers are shared with 600/600E/600X | |
1348 | */ | |
1349 | .callback = disable_acpi_irq, | |
1350 | .ident = "IBM Thinkpad 600 Series 2645", | |
1351 | .matches = { | |
1352 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), | |
1353 | DMI_MATCH(DMI_BOARD_NAME, "2645"), | |
1354 | }, | |
1355 | }, | |
1356 | { | |
1357 | .callback = disable_acpi_irq, | |
1358 | .ident = "IBM Thinkpad 600 Series 2646", | |
1359 | .matches = { | |
1360 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), | |
1361 | DMI_MATCH(DMI_BOARD_NAME, "2646"), | |
1362 | }, | |
1363 | }, | |
aea00143 AP |
1364 | /* |
1365 | * Boxes that need ACPI PCI IRQ routing and PCI scan disabled | |
1366 | */ | |
4be44fcd LB |
1367 | { /* _BBN 0 bug */ |
1368 | .callback = disable_acpi_pci, | |
1369 | .ident = "ASUS PR-DLS", | |
1370 | .matches = { | |
1371 | DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), | |
1372 | DMI_MATCH(DMI_BOARD_NAME, "PR-DLS"), | |
1373 | DMI_MATCH(DMI_BIOS_VERSION, | |
1374 | "ASUS PR-DLS ACPI BIOS Revision 1010"), | |
1375 | DMI_MATCH(DMI_BIOS_DATE, "03/21/2003") | |
1376 | }, | |
1377 | }, | |
aea00143 | 1378 | { |
4be44fcd LB |
1379 | .callback = disable_acpi_pci, |
1380 | .ident = "Acer TravelMate 36x Laptop", | |
1381 | .matches = { | |
1382 | DMI_MATCH(DMI_SYS_VENDOR, "Acer"), | |
1383 | DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 360"), | |
1384 | }, | |
1385 | }, | |
35af2821 AH |
1386 | {} |
1387 | }; | |
1388 | ||
1389 | /* second table for DMI checks that should run after early-quirks */ | |
1390 | static struct dmi_system_id __initdata acpi_dmi_table_late[] = { | |
e2079c43 RW |
1391 | /* |
1392 | * HP laptops which use a DSDT reporting as HP/SB400/10000, | |
1393 | * which includes some code which overrides all temperature | |
1394 | * trip points to 16C if the INTIN2 input of the I/O APIC | |
1395 | * is enabled. This input is incorrectly designated the | |
1396 | * ISA IRQ 0 via an interrupt source override even though | |
1397 | * it is wired to the output of the master 8259A and INTIN0 | |
ae10ccdc | 1398 | * is not connected at all. Force ignoring BIOS IRQ0 |
e2079c43 RW |
1399 | * override in that cases. |
1400 | */ | |
e84956f9 RW |
1401 | { |
1402 | .callback = dmi_ignore_irq0_timer_override, | |
1403 | .ident = "HP nx6115 laptop", | |
1404 | .matches = { | |
1405 | DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), | |
1406 | DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6115"), | |
1407 | }, | |
1408 | }, | |
e2079c43 RW |
1409 | { |
1410 | .callback = dmi_ignore_irq0_timer_override, | |
1411 | .ident = "HP NX6125 laptop", | |
1412 | .matches = { | |
1413 | DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), | |
1414 | DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6125"), | |
1415 | }, | |
1416 | }, | |
1417 | { | |
1418 | .callback = dmi_ignore_irq0_timer_override, | |
1419 | .ident = "HP NX6325 laptop", | |
1420 | .matches = { | |
1421 | DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), | |
1422 | DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6325"), | |
1423 | }, | |
1424 | }, | |
e84956f9 RW |
1425 | { |
1426 | .callback = dmi_ignore_irq0_timer_override, | |
1427 | .ident = "HP 6715b laptop", | |
1428 | .matches = { | |
1429 | DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), | |
1430 | DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq 6715b"), | |
1431 | }, | |
1432 | }, | |
f6b54f08 FT |
1433 | { |
1434 | .callback = dmi_ignore_irq0_timer_override, | |
1435 | .ident = "FUJITSU SIEMENS", | |
1436 | .matches = { | |
1437 | DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), | |
1438 | DMI_MATCH(DMI_PRODUCT_NAME, "AMILO PRO V2030"), | |
1439 | }, | |
1440 | }, | |
4be44fcd | 1441 | {} |
aea00143 AP |
1442 | }; |
1443 | ||
1da177e4 LT |
1444 | /* |
1445 | * acpi_boot_table_init() and acpi_boot_init() | |
1446 | * called from setup_arch(), always. | |
1447 | * 1. checksums all tables | |
1448 | * 2. enumerates lapics | |
1449 | * 3. enumerates io-apics | |
1450 | * | |
1451 | * acpi_table_init() is separate to allow reading SRAT without | |
1452 | * other side effects. | |
1453 | * | |
1454 | * side effects of acpi_boot_init: | |
1455 | * acpi_lapic = 1 if LAPIC found | |
1456 | * acpi_ioapic = 1 if IOAPIC found | |
1457 | * if (acpi_lapic && acpi_ioapic) smp_found_config = 1; | |
1458 | * if acpi_blacklisted() acpi_disabled = 1; | |
1459 | * acpi_irq_model=... | |
1460 | * ... | |
1da177e4 LT |
1461 | */ |
1462 | ||
8558e394 | 1463 | void __init acpi_boot_table_init(void) |
1da177e4 | 1464 | { |
aea00143 | 1465 | dmi_check_system(acpi_dmi_table); |
aea00143 | 1466 | |
1da177e4 LT |
1467 | /* |
1468 | * If acpi_disabled, bail out | |
1da177e4 | 1469 | */ |
68ca4069 | 1470 | if (acpi_disabled) |
8558e394 | 1471 | return; |
1da177e4 | 1472 | |
5f3b1a8b | 1473 | /* |
1da177e4 LT |
1474 | * Initialize the ACPI boot-time table parser. |
1475 | */ | |
8558e394 | 1476 | if (acpi_table_init()) { |
1da177e4 | 1477 | disable_acpi(); |
8558e394 | 1478 | return; |
1da177e4 | 1479 | } |
1da177e4 | 1480 | |
5f3b1a8b | 1481 | acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf); |
1da177e4 LT |
1482 | |
1483 | /* | |
1484 | * blacklist may disable ACPI entirely | |
1485 | */ | |
8558e394 | 1486 | if (acpi_blacklisted()) { |
1da177e4 LT |
1487 | if (acpi_force) { |
1488 | printk(KERN_WARNING PREFIX "acpi=force override\n"); | |
1489 | } else { | |
1490 | printk(KERN_WARNING PREFIX "Disabling ACPI support\n"); | |
1491 | disable_acpi(); | |
8558e394 | 1492 | return; |
1da177e4 LT |
1493 | } |
1494 | } | |
cbf9bd60 YL |
1495 | } |
1496 | ||
1497 | int __init early_acpi_boot_init(void) | |
1498 | { | |
1499 | /* | |
1500 | * If acpi_disabled, bail out | |
cbf9bd60 | 1501 | */ |
68ca4069 | 1502 | if (acpi_disabled) |
cbf9bd60 YL |
1503 | return 1; |
1504 | ||
1505 | /* | |
1506 | * Process the Multiple APIC Description Table (MADT), if present | |
1507 | */ | |
1508 | early_acpi_process_madt(); | |
1da177e4 LT |
1509 | |
1510 | return 0; | |
1511 | } | |
1512 | ||
1da177e4 LT |
1513 | int __init acpi_boot_init(void) |
1514 | { | |
35af2821 AH |
1515 | /* those are executed after early-quirks are executed */ |
1516 | dmi_check_system(acpi_dmi_table_late); | |
1517 | ||
1da177e4 LT |
1518 | /* |
1519 | * If acpi_disabled, bail out | |
1da177e4 | 1520 | */ |
68ca4069 | 1521 | if (acpi_disabled) |
4be44fcd | 1522 | return 1; |
1da177e4 | 1523 | |
5f3b1a8b | 1524 | acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf); |
1da177e4 LT |
1525 | |
1526 | /* | |
1527 | * set sci_int and PM timer address | |
1528 | */ | |
ceb6c468 | 1529 | acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt); |
1da177e4 LT |
1530 | |
1531 | /* | |
1532 | * Process the Multiple APIC Description Table (MADT), if present | |
1533 | */ | |
1534 | acpi_process_madt(); | |
1535 | ||
5f3b1a8b | 1536 | acpi_table_parse(ACPI_SIG_HPET, acpi_parse_hpet); |
1da177e4 | 1537 | |
b72d0db9 TG |
1538 | if (!acpi_noirq) |
1539 | x86_init.pci.init = pci_acpi_init; | |
1540 | ||
1da177e4 LT |
1541 | return 0; |
1542 | } | |
1a3f239d RR |
1543 | |
1544 | static int __init parse_acpi(char *arg) | |
1545 | { | |
1546 | if (!arg) | |
1547 | return -EINVAL; | |
1548 | ||
1549 | /* "acpi=off" disables both ACPI table parsing and interpreter */ | |
1550 | if (strcmp(arg, "off") == 0) { | |
1551 | disable_acpi(); | |
1552 | } | |
1553 | /* acpi=force to over-ride black-list */ | |
1554 | else if (strcmp(arg, "force") == 0) { | |
1555 | acpi_force = 1; | |
1a3f239d RR |
1556 | acpi_disabled = 0; |
1557 | } | |
1558 | /* acpi=strict disables out-of-spec workarounds */ | |
1559 | else if (strcmp(arg, "strict") == 0) { | |
1560 | acpi_strict = 1; | |
1561 | } | |
237889bf ZY |
1562 | /* acpi=rsdt use RSDT instead of XSDT */ |
1563 | else if (strcmp(arg, "rsdt") == 0) { | |
fab46105 | 1564 | acpi_gbl_do_not_use_xsdt = TRUE; |
237889bf | 1565 | } |
1a3f239d RR |
1566 | /* "acpi=noirq" disables ACPI interrupt routing */ |
1567 | else if (strcmp(arg, "noirq") == 0) { | |
1568 | acpi_noirq_set(); | |
aa2110cb LM |
1569 | } |
1570 | /* "acpi=copy_dsdt" copys DSDT */ | |
1571 | else if (strcmp(arg, "copy_dsdt") == 0) { | |
1572 | acpi_gbl_copy_dsdt_locally = 1; | |
9ad95879 NR |
1573 | } |
1574 | /* "acpi=nocmcff" disables FF mode for corrected errors */ | |
1575 | else if (strcmp(arg, "nocmcff") == 0) { | |
1576 | acpi_disable_cmcff = 1; | |
1a3f239d RR |
1577 | } else { |
1578 | /* Core will printk when we return error. */ | |
1579 | return -EINVAL; | |
1580 | } | |
1581 | return 0; | |
1582 | } | |
1583 | early_param("acpi", parse_acpi); | |
1584 | ||
1585 | /* FIXME: Using pci= for an ACPI parameter is a travesty. */ | |
1586 | static int __init parse_pci(char *arg) | |
1587 | { | |
1588 | if (arg && strcmp(arg, "noacpi") == 0) | |
1589 | acpi_disable_pci(); | |
1590 | return 0; | |
1591 | } | |
1592 | early_param("pci", parse_pci); | |
1593 | ||
3c999f14 YL |
1594 | int __init acpi_mps_check(void) |
1595 | { | |
1596 | #if defined(CONFIG_X86_LOCAL_APIC) && !defined(CONFIG_X86_MPPARSE) | |
1597 | /* mptable code is not built-in*/ | |
1598 | if (acpi_disabled || acpi_noirq) { | |
1599 | printk(KERN_WARNING "MPS support code is not built-in.\n" | |
1600 | "Using acpi=off or acpi=noirq or pci=noacpi " | |
1601 | "may have problem\n"); | |
1602 | return 1; | |
1603 | } | |
1604 | #endif | |
1605 | return 0; | |
1606 | } | |
1607 | ||
1a3f239d RR |
1608 | #ifdef CONFIG_X86_IO_APIC |
1609 | static int __init parse_acpi_skip_timer_override(char *arg) | |
1610 | { | |
1611 | acpi_skip_timer_override = 1; | |
1612 | return 0; | |
1613 | } | |
1614 | early_param("acpi_skip_timer_override", parse_acpi_skip_timer_override); | |
fa18f477 AK |
1615 | |
1616 | static int __init parse_acpi_use_timer_override(char *arg) | |
1617 | { | |
1618 | acpi_use_timer_override = 1; | |
1619 | return 0; | |
1620 | } | |
1621 | early_param("acpi_use_timer_override", parse_acpi_use_timer_override); | |
1a3f239d RR |
1622 | #endif /* CONFIG_X86_IO_APIC */ |
1623 | ||
1624 | static int __init setup_acpi_sci(char *s) | |
1625 | { | |
1626 | if (!s) | |
1627 | return -EINVAL; | |
1628 | if (!strcmp(s, "edge")) | |
5f3b1a8b AS |
1629 | acpi_sci_flags = ACPI_MADT_TRIGGER_EDGE | |
1630 | (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK); | |
1a3f239d | 1631 | else if (!strcmp(s, "level")) |
5f3b1a8b AS |
1632 | acpi_sci_flags = ACPI_MADT_TRIGGER_LEVEL | |
1633 | (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK); | |
1a3f239d | 1634 | else if (!strcmp(s, "high")) |
5f3b1a8b AS |
1635 | acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_HIGH | |
1636 | (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK); | |
1a3f239d | 1637 | else if (!strcmp(s, "low")) |
5f3b1a8b AS |
1638 | acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_LOW | |
1639 | (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK); | |
1a3f239d RR |
1640 | else |
1641 | return -EINVAL; | |
1642 | return 0; | |
1643 | } | |
1644 | early_param("acpi_sci", setup_acpi_sci); | |
d0a9081b AM |
1645 | |
1646 | int __acpi_acquire_global_lock(unsigned int *lock) | |
1647 | { | |
1648 | unsigned int old, new, val; | |
1649 | do { | |
1650 | old = *lock; | |
1651 | new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1)); | |
1652 | val = cmpxchg(lock, old, new); | |
1653 | } while (unlikely (val != old)); | |
1654 | return (new < 3) ? -1 : 0; | |
1655 | } | |
1656 | ||
1657 | int __acpi_release_global_lock(unsigned int *lock) | |
1658 | { | |
1659 | unsigned int old, new, val; | |
1660 | do { | |
1661 | old = *lock; | |
1662 | new = old & ~0x3; | |
1663 | val = cmpxchg(lock, old, new); | |
1664 | } while (unlikely (val != old)); | |
1665 | return old & 0x1; | |
1666 | } | |
8e30524d TR |
1667 | |
1668 | void __init arch_reserve_mem_area(acpi_physical_address addr, size_t size) | |
1669 | { | |
1670 | e820_add_region(addr, size, E820_ACPI); | |
1671 | update_e820(); | |
1672 | } |