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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> |
95d76acc | 46 | #include <asm/i8259.h> |
1da177e4 | 47 | |
d6a77ead | 48 | #include "sleep.h" /* To include x86_acpi_suspend_lowlevel */ |
e8924acb | 49 | static int __initdata acpi_force = 0; |
c636f753 | 50 | int acpi_disabled; |
df3bb57d AK |
51 | EXPORT_SYMBOL(acpi_disabled); |
52 | ||
1da177e4 | 53 | #ifdef CONFIG_X86_64 |
1dcdd3d1 | 54 | # include <asm/proto.h> |
4be44fcd | 55 | #endif /* X86 */ |
1da177e4 | 56 | |
1da177e4 LT |
57 | #define PREFIX "ACPI: " |
58 | ||
90d53909 | 59 | int acpi_noirq; /* skip ACPI IRQ initialization */ |
6e4be1ff YL |
60 | int acpi_pci_disabled; /* skip ACPI PCI scan and IRQ initialization */ |
61 | EXPORT_SYMBOL(acpi_pci_disabled); | |
1da177e4 LT |
62 | |
63 | int acpi_lapic; | |
64 | int acpi_ioapic; | |
65 | int acpi_strict; | |
9ad95879 | 66 | int acpi_disable_cmcff; |
1da177e4 | 67 | |
5f3b1a8b | 68 | u8 acpi_sci_flags __initdata; |
1da177e4 LT |
69 | int acpi_sci_override_gsi __initdata; |
70 | int acpi_skip_timer_override __initdata; | |
fa18f477 | 71 | int acpi_use_timer_override __initdata; |
7f74f8f2 | 72 | int acpi_fix_pin2_polarity __initdata; |
1da177e4 LT |
73 | |
74 | #ifdef CONFIG_X86_LOCAL_APIC | |
75 | static u64 acpi_lapic_addr __initdata = APIC_DEFAULT_PHYS_BASE; | |
76 | #endif | |
77 | ||
78 | #ifndef __HAVE_ARCH_CMPXCHG | |
79 | #warning ACPI uses CMPXCHG, i486 and later hardware | |
80 | #endif | |
81 | ||
1da177e4 LT |
82 | /* -------------------------------------------------------------------------- |
83 | Boot-time Configuration | |
84 | -------------------------------------------------------------------------- */ | |
85 | ||
86 | /* | |
87 | * The default interrupt routing model is PIC (8259). This gets | |
27b46d76 | 88 | * overridden if IOAPICs are enumerated (below). |
1da177e4 | 89 | */ |
4be44fcd | 90 | enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_PIC; |
1da177e4 | 91 | |
1da177e4 | 92 | |
988856ee EB |
93 | /* |
94 | * ISA irqs by default are the first 16 gsis but can be | |
95 | * any gsi as specified by an interrupt source override. | |
96 | */ | |
97 | static u32 isa_irq_to_gsi[NR_IRQS_LEGACY] __read_mostly = { | |
98 | 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 | |
99 | }; | |
100 | ||
2c0a6894 JL |
101 | #define ACPI_INVALID_GSI INT_MIN |
102 | ||
988856ee EB |
103 | static unsigned int gsi_to_irq(unsigned int gsi) |
104 | { | |
95d76acc | 105 | unsigned int irq = gsi + nr_legacy_irqs(); |
988856ee EB |
106 | unsigned int i; |
107 | ||
95d76acc | 108 | for (i = 0; i < nr_legacy_irqs(); i++) { |
988856ee EB |
109 | if (isa_irq_to_gsi[i] == gsi) { |
110 | return i; | |
111 | } | |
112 | } | |
113 | ||
114 | /* Provide an identity mapping of gsi == irq | |
115 | * except on truly weird platforms that have | |
116 | * non isa irqs in the first 16 gsis. | |
117 | */ | |
95d76acc | 118 | if (gsi >= nr_legacy_irqs()) |
988856ee EB |
119 | irq = gsi; |
120 | else | |
a4384df3 | 121 | irq = gsi_top + gsi; |
988856ee EB |
122 | |
123 | return irq; | |
124 | } | |
125 | ||
1da177e4 | 126 | /* |
45f1330a ZY |
127 | * This is just a simple wrapper around early_ioremap(), |
128 | * with sanity checks for phys == 0 and size == 0. | |
1da177e4 | 129 | */ |
2fdf0741 | 130 | char *__init __acpi_map_table(unsigned long phys, unsigned long size) |
1da177e4 | 131 | { |
1da177e4 | 132 | |
f34fa82b YL |
133 | if (!phys || !size) |
134 | return NULL; | |
135 | ||
7d97277b YL |
136 | return early_ioremap(phys, size); |
137 | } | |
45f1330a | 138 | |
7d97277b YL |
139 | void __init __acpi_unmap_table(char *map, unsigned long size) |
140 | { | |
141 | if (!map || !size) | |
142 | return; | |
1da177e4 | 143 | |
7d97277b | 144 | early_iounmap(map, size); |
1da177e4 | 145 | } |
1da177e4 | 146 | |
1da177e4 | 147 | #ifdef CONFIG_X86_LOCAL_APIC |
15a58ed1 | 148 | static int __init acpi_parse_madt(struct acpi_table_header *table) |
1da177e4 | 149 | { |
4be44fcd | 150 | struct acpi_table_madt *madt = NULL; |
1da177e4 | 151 | |
15a58ed1 | 152 | if (!cpu_has_apic) |
1da177e4 LT |
153 | return -EINVAL; |
154 | ||
15a58ed1 | 155 | madt = (struct acpi_table_madt *)table; |
1da177e4 LT |
156 | if (!madt) { |
157 | printk(KERN_WARNING PREFIX "Unable to map MADT\n"); | |
158 | return -ENODEV; | |
159 | } | |
160 | ||
ad363f80 AS |
161 | if (madt->address) { |
162 | acpi_lapic_addr = (u64) madt->address; | |
1da177e4 LT |
163 | |
164 | printk(KERN_DEBUG PREFIX "Local APIC address 0x%08x\n", | |
ad363f80 | 165 | madt->address); |
1da177e4 LT |
166 | } |
167 | ||
306db03b IM |
168 | default_acpi_madt_oem_check(madt->header.oem_id, |
169 | madt->header.oem_table_id); | |
4be44fcd | 170 | |
1da177e4 LT |
171 | return 0; |
172 | } | |
173 | ||
7e1f85f9 JL |
174 | /** |
175 | * acpi_register_lapic - register a local apic and generates a logic cpu number | |
176 | * @id: local apic id to register | |
177 | * @enabled: this cpu is enabled or not | |
178 | * | |
179 | * Returns the logic cpu number which maps to the local apic | |
180 | */ | |
181 | static int acpi_register_lapic(int id, u8 enabled) | |
dfac2189 | 182 | { |
fb3bbd6a YL |
183 | unsigned int ver = 0; |
184 | ||
82982d72 | 185 | if (id >= MAX_LOCAL_APIC) { |
d3bd0588 | 186 | printk(KERN_INFO PREFIX "skipped apicid that is too big\n"); |
7e1f85f9 | 187 | return -EINVAL; |
d3bd0588 YL |
188 | } |
189 | ||
dfac2189 AS |
190 | if (!enabled) { |
191 | ++disabled_cpus; | |
7e1f85f9 | 192 | return -EINVAL; |
dfac2189 AS |
193 | } |
194 | ||
fb3bbd6a YL |
195 | if (boot_cpu_physical_apicid != -1U) |
196 | ver = apic_version[boot_cpu_physical_apicid]; | |
fb3bbd6a | 197 | |
7e1f85f9 | 198 | return generic_processor_info(id, ver); |
dfac2189 AS |
199 | } |
200 | ||
7237d3de SS |
201 | static int __init |
202 | acpi_parse_x2apic(struct acpi_subtable_header *header, const unsigned long end) | |
203 | { | |
204 | struct acpi_madt_local_x2apic *processor = NULL; | |
a35fd282 YL |
205 | int apic_id; |
206 | u8 enabled; | |
7237d3de SS |
207 | |
208 | processor = (struct acpi_madt_local_x2apic *)header; | |
209 | ||
210 | if (BAD_MADT_ENTRY(processor, end)) | |
211 | return -EINVAL; | |
212 | ||
213 | acpi_table_print_madt_entry(header); | |
214 | ||
a35fd282 YL |
215 | apic_id = processor->local_apic_id; |
216 | enabled = processor->lapic_flags & ACPI_MADT_ENABLED; | |
7237d3de SS |
217 | #ifdef CONFIG_X86_X2APIC |
218 | /* | |
219 | * We need to register disabled CPU as well to permit | |
220 | * counting disabled CPUs. This allows us to size | |
221 | * cpus_possible_map more accurately, to permit | |
222 | * to not preallocating memory for all NR_CPUS | |
223 | * when we use CPU hotplug. | |
224 | */ | |
b7157acf | 225 | if (!apic->apic_id_valid(apic_id) && enabled) |
a35fd282 YL |
226 | printk(KERN_WARNING PREFIX "x2apic entry ignored\n"); |
227 | else | |
228 | acpi_register_lapic(apic_id, enabled); | |
7237d3de SS |
229 | #else |
230 | printk(KERN_WARNING PREFIX "x2apic entry ignored\n"); | |
231 | #endif | |
232 | ||
233 | return 0; | |
234 | } | |
235 | ||
1da177e4 | 236 | static int __init |
5f3b1a8b | 237 | acpi_parse_lapic(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 238 | { |
5f3b1a8b | 239 | struct acpi_madt_local_apic *processor = NULL; |
1da177e4 | 240 | |
5f3b1a8b | 241 | processor = (struct acpi_madt_local_apic *)header; |
1da177e4 LT |
242 | |
243 | if (BAD_MADT_ENTRY(processor, end)) | |
244 | return -EINVAL; | |
245 | ||
246 | acpi_table_print_madt_entry(header); | |
247 | ||
7f66ae48 AR |
248 | /* |
249 | * We need to register disabled CPU as well to permit | |
250 | * counting disabled CPUs. This allows us to size | |
251 | * cpus_possible_map more accurately, to permit | |
252 | * to not preallocating memory for all NR_CPUS | |
253 | * when we use CPU hotplug. | |
254 | */ | |
dfac2189 AS |
255 | acpi_register_lapic(processor->id, /* APIC ID */ |
256 | processor->lapic_flags & ACPI_MADT_ENABLED); | |
1da177e4 LT |
257 | |
258 | return 0; | |
259 | } | |
260 | ||
ac049c1d JS |
261 | static int __init |
262 | acpi_parse_sapic(struct acpi_subtable_header *header, const unsigned long end) | |
263 | { | |
264 | struct acpi_madt_local_sapic *processor = NULL; | |
265 | ||
266 | processor = (struct acpi_madt_local_sapic *)header; | |
267 | ||
268 | if (BAD_MADT_ENTRY(processor, end)) | |
269 | return -EINVAL; | |
270 | ||
271 | acpi_table_print_madt_entry(header); | |
272 | ||
dfac2189 AS |
273 | acpi_register_lapic((processor->id << 8) | processor->eid,/* APIC ID */ |
274 | processor->lapic_flags & ACPI_MADT_ENABLED); | |
ac049c1d JS |
275 | |
276 | return 0; | |
277 | } | |
278 | ||
1da177e4 | 279 | static int __init |
5f3b1a8b | 280 | acpi_parse_lapic_addr_ovr(struct acpi_subtable_header * header, |
4be44fcd | 281 | const unsigned long end) |
1da177e4 | 282 | { |
5f3b1a8b | 283 | struct acpi_madt_local_apic_override *lapic_addr_ovr = NULL; |
1da177e4 | 284 | |
5f3b1a8b | 285 | lapic_addr_ovr = (struct acpi_madt_local_apic_override *)header; |
1da177e4 LT |
286 | |
287 | if (BAD_MADT_ENTRY(lapic_addr_ovr, end)) | |
288 | return -EINVAL; | |
289 | ||
290 | acpi_lapic_addr = lapic_addr_ovr->address; | |
291 | ||
292 | return 0; | |
293 | } | |
294 | ||
7237d3de SS |
295 | static int __init |
296 | acpi_parse_x2apic_nmi(struct acpi_subtable_header *header, | |
297 | const unsigned long end) | |
298 | { | |
299 | struct acpi_madt_local_x2apic_nmi *x2apic_nmi = NULL; | |
300 | ||
301 | x2apic_nmi = (struct acpi_madt_local_x2apic_nmi *)header; | |
302 | ||
303 | if (BAD_MADT_ENTRY(x2apic_nmi, end)) | |
304 | return -EINVAL; | |
305 | ||
306 | acpi_table_print_madt_entry(header); | |
307 | ||
308 | if (x2apic_nmi->lint != 1) | |
309 | printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n"); | |
310 | ||
311 | return 0; | |
312 | } | |
313 | ||
1da177e4 | 314 | static int __init |
5f3b1a8b | 315 | acpi_parse_lapic_nmi(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 316 | { |
5f3b1a8b | 317 | struct acpi_madt_local_apic_nmi *lapic_nmi = NULL; |
1da177e4 | 318 | |
5f3b1a8b | 319 | lapic_nmi = (struct acpi_madt_local_apic_nmi *)header; |
1da177e4 LT |
320 | |
321 | if (BAD_MADT_ENTRY(lapic_nmi, end)) | |
322 | return -EINVAL; | |
323 | ||
324 | acpi_table_print_madt_entry(header); | |
325 | ||
326 | if (lapic_nmi->lint != 1) | |
327 | printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n"); | |
328 | ||
329 | return 0; | |
330 | } | |
331 | ||
4be44fcd | 332 | #endif /*CONFIG_X86_LOCAL_APIC */ |
1da177e4 | 333 | |
8466361a | 334 | #ifdef CONFIG_X86_IO_APIC |
8d7cdcb9 JL |
335 | #define MP_ISA_BUS 0 |
336 | ||
337 | static void __init mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger, | |
338 | u32 gsi) | |
339 | { | |
340 | int ioapic; | |
341 | int pin; | |
342 | struct mpc_intsrc mp_irq; | |
343 | ||
344 | /* | |
345 | * Convert 'gsi' to 'ioapic.pin'. | |
346 | */ | |
347 | ioapic = mp_find_ioapic(gsi); | |
348 | if (ioapic < 0) | |
349 | return; | |
350 | pin = mp_find_ioapic_pin(ioapic, gsi); | |
351 | ||
352 | /* | |
353 | * TBD: This check is for faulty timer entries, where the override | |
354 | * erroneously sets the trigger to level, resulting in a HUGE | |
355 | * increase of timer interrupts! | |
356 | */ | |
357 | if ((bus_irq == 0) && (trigger == 3)) | |
358 | trigger = 1; | |
359 | ||
360 | mp_irq.type = MP_INTSRC; | |
361 | mp_irq.irqtype = mp_INT; | |
362 | mp_irq.irqflag = (trigger << 2) | polarity; | |
363 | mp_irq.srcbus = MP_ISA_BUS; | |
364 | mp_irq.srcbusirq = bus_irq; /* IRQ */ | |
365 | mp_irq.dstapic = mpc_ioapic_id(ioapic); /* APIC ID */ | |
366 | mp_irq.dstirq = pin; /* INTIN# */ | |
367 | ||
368 | mp_save_irq(&mp_irq); | |
369 | ||
2e0ad0e2 JL |
370 | /* |
371 | * Reset default identity mapping if gsi is also an legacy IRQ, | |
372 | * otherwise there will be more than one entry with the same GSI | |
373 | * and acpi_isa_irq_to_gsi() may give wrong result. | |
374 | */ | |
95d76acc | 375 | if (gsi < nr_legacy_irqs() && isa_irq_to_gsi[gsi] == gsi) |
2e0ad0e2 | 376 | isa_irq_to_gsi[gsi] = ACPI_INVALID_GSI; |
8d7cdcb9 JL |
377 | isa_irq_to_gsi[bus_irq] = gsi; |
378 | } | |
379 | ||
380 | static int mp_config_acpi_gsi(struct device *dev, u32 gsi, int trigger, | |
381 | int polarity) | |
382 | { | |
383 | #ifdef CONFIG_X86_MPPARSE | |
384 | struct mpc_intsrc mp_irq; | |
385 | struct pci_dev *pdev; | |
386 | unsigned char number; | |
387 | unsigned int devfn; | |
388 | int ioapic; | |
389 | u8 pin; | |
390 | ||
391 | if (!acpi_ioapic) | |
392 | return 0; | |
393 | if (!dev || !dev_is_pci(dev)) | |
394 | return 0; | |
395 | ||
396 | pdev = to_pci_dev(dev); | |
397 | number = pdev->bus->number; | |
398 | devfn = pdev->devfn; | |
399 | pin = pdev->pin; | |
400 | /* print the entry should happen on mptable identically */ | |
401 | mp_irq.type = MP_INTSRC; | |
402 | mp_irq.irqtype = mp_INT; | |
403 | mp_irq.irqflag = (trigger == ACPI_EDGE_SENSITIVE ? 4 : 0x0c) | | |
404 | (polarity == ACPI_ACTIVE_HIGH ? 1 : 3); | |
405 | mp_irq.srcbus = number; | |
406 | mp_irq.srcbusirq = (((devfn >> 3) & 0x1f) << 2) | ((pin - 1) & 3); | |
407 | ioapic = mp_find_ioapic(gsi); | |
408 | mp_irq.dstapic = mpc_ioapic_id(ioapic); | |
409 | mp_irq.dstirq = mp_find_ioapic_pin(ioapic, gsi); | |
410 | ||
411 | mp_save_irq(&mp_irq); | |
412 | #endif | |
413 | return 0; | |
414 | } | |
415 | ||
a491cc90 | 416 | static int mp_register_gsi(struct device *dev, u32 gsi, int trigger, |
8d7cdcb9 JL |
417 | int polarity) |
418 | { | |
419 | int ioapic; | |
420 | int ioapic_pin; | |
421 | struct io_apic_irq_attr irq_attr; | |
422 | int ret; | |
423 | ||
424 | if (acpi_irq_model != ACPI_IRQ_MODEL_IOAPIC) | |
425 | return gsi; | |
426 | ||
427 | /* Don't set up the ACPI SCI because it's already set up */ | |
428 | if (acpi_gbl_FADT.sci_interrupt == gsi) | |
429 | return gsi; | |
430 | ||
431 | ioapic = mp_find_ioapic(gsi); | |
432 | if (ioapic < 0) { | |
433 | printk(KERN_WARNING "No IOAPIC for GSI %u\n", gsi); | |
434 | return gsi; | |
435 | } | |
436 | ||
437 | ioapic_pin = mp_find_ioapic_pin(ioapic, gsi); | |
438 | ||
439 | if (ioapic_pin > MP_MAX_IOAPIC_PIN) { | |
440 | printk(KERN_ERR "Invalid reference to IOAPIC pin " | |
441 | "%d-%d\n", mpc_ioapic_id(ioapic), | |
442 | ioapic_pin); | |
443 | return gsi; | |
444 | } | |
445 | ||
446 | if (enable_update_mptable) | |
447 | mp_config_acpi_gsi(dev, gsi, trigger, polarity); | |
448 | ||
449 | set_io_apic_irq_attr(&irq_attr, ioapic, ioapic_pin, | |
450 | trigger == ACPI_EDGE_SENSITIVE ? 0 : 1, | |
451 | polarity == ACPI_ACTIVE_HIGH ? 0 : 1); | |
452 | ret = io_apic_set_pci_routing(dev, gsi_to_irq(gsi), &irq_attr); | |
453 | if (ret < 0) | |
2c0a6894 | 454 | gsi = ACPI_INVALID_GSI; |
8d7cdcb9 JL |
455 | |
456 | return gsi; | |
457 | } | |
458 | ||
1da177e4 LT |
459 | |
460 | static int __init | |
5f3b1a8b | 461 | acpi_parse_ioapic(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 462 | { |
5f3b1a8b | 463 | struct acpi_madt_io_apic *ioapic = NULL; |
1da177e4 | 464 | |
5f3b1a8b | 465 | ioapic = (struct acpi_madt_io_apic *)header; |
1da177e4 LT |
466 | |
467 | if (BAD_MADT_ENTRY(ioapic, end)) | |
468 | return -EINVAL; | |
4be44fcd | 469 | |
1da177e4 LT |
470 | acpi_table_print_madt_entry(header); |
471 | ||
4be44fcd LB |
472 | mp_register_ioapic(ioapic->id, |
473 | ioapic->address, ioapic->global_irq_base); | |
474 | ||
1da177e4 LT |
475 | return 0; |
476 | } | |
477 | ||
478 | /* | |
479 | * Parse Interrupt Source Override for the ACPI SCI | |
480 | */ | |
9d2062b8 | 481 | static void __init acpi_sci_ioapic_setup(u8 bus_irq, u16 polarity, u16 trigger, u32 gsi) |
1da177e4 LT |
482 | { |
483 | if (trigger == 0) /* compatible SCI trigger is level */ | |
484 | trigger = 3; | |
485 | ||
486 | if (polarity == 0) /* compatible SCI polarity is low */ | |
487 | polarity = 3; | |
488 | ||
489 | /* Command-line over-ride via acpi_sci= */ | |
5f3b1a8b AS |
490 | if (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) |
491 | trigger = (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) >> 2; | |
1da177e4 | 492 | |
5f3b1a8b AS |
493 | if (acpi_sci_flags & ACPI_MADT_POLARITY_MASK) |
494 | polarity = acpi_sci_flags & ACPI_MADT_POLARITY_MASK; | |
1da177e4 | 495 | |
9d2062b8 | 496 | mp_override_legacy_irq(bus_irq, polarity, trigger, gsi); |
1da177e4 LT |
497 | |
498 | /* | |
499 | * stash over-ride to indicate we've been here | |
cee324b1 | 500 | * and for later update of acpi_gbl_FADT |
1da177e4 | 501 | */ |
7bdd21ce | 502 | acpi_sci_override_gsi = gsi; |
1da177e4 LT |
503 | return; |
504 | } | |
505 | ||
506 | static int __init | |
5f3b1a8b | 507 | acpi_parse_int_src_ovr(struct acpi_subtable_header * header, |
4be44fcd | 508 | const unsigned long end) |
1da177e4 | 509 | { |
5f3b1a8b | 510 | struct acpi_madt_interrupt_override *intsrc = NULL; |
1da177e4 | 511 | |
5f3b1a8b | 512 | intsrc = (struct acpi_madt_interrupt_override *)header; |
1da177e4 LT |
513 | |
514 | if (BAD_MADT_ENTRY(intsrc, end)) | |
515 | return -EINVAL; | |
516 | ||
517 | acpi_table_print_madt_entry(header); | |
518 | ||
5f3b1a8b | 519 | if (intsrc->source_irq == acpi_gbl_FADT.sci_interrupt) { |
9d2062b8 | 520 | acpi_sci_ioapic_setup(intsrc->source_irq, |
5f3b1a8b | 521 | intsrc->inti_flags & ACPI_MADT_POLARITY_MASK, |
9d2062b8 EB |
522 | (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2, |
523 | intsrc->global_irq); | |
1da177e4 LT |
524 | return 0; |
525 | } | |
526 | ||
ae10ccdc | 527 | if (intsrc->source_irq == 0) { |
7f74f8f2 | 528 | if (acpi_skip_timer_override) { |
ae10ccdc | 529 | printk(PREFIX "BIOS IRQ0 override ignored.\n"); |
7f74f8f2 AH |
530 | return 0; |
531 | } | |
ae10ccdc FT |
532 | |
533 | if ((intsrc->global_irq == 2) && acpi_fix_pin2_polarity | |
534 | && (intsrc->inti_flags & ACPI_MADT_POLARITY_MASK)) { | |
7f74f8f2 AH |
535 | intsrc->inti_flags &= ~ACPI_MADT_POLARITY_MASK; |
536 | printk(PREFIX "BIOS IRQ0 pin2 override: forcing polarity to high active.\n"); | |
537 | } | |
1da177e4 LT |
538 | } |
539 | ||
5f3b1a8b AS |
540 | mp_override_legacy_irq(intsrc->source_irq, |
541 | intsrc->inti_flags & ACPI_MADT_POLARITY_MASK, | |
542 | (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2, | |
543 | intsrc->global_irq); | |
1da177e4 LT |
544 | |
545 | return 0; | |
546 | } | |
547 | ||
1da177e4 | 548 | static int __init |
5f3b1a8b | 549 | acpi_parse_nmi_src(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 550 | { |
5f3b1a8b | 551 | struct acpi_madt_nmi_source *nmi_src = NULL; |
1da177e4 | 552 | |
5f3b1a8b | 553 | nmi_src = (struct acpi_madt_nmi_source *)header; |
1da177e4 LT |
554 | |
555 | if (BAD_MADT_ENTRY(nmi_src, end)) | |
556 | return -EINVAL; | |
557 | ||
558 | acpi_table_print_madt_entry(header); | |
559 | ||
560 | /* TBD: Support nimsrc entries? */ | |
561 | ||
562 | return 0; | |
563 | } | |
564 | ||
4be44fcd | 565 | #endif /* CONFIG_X86_IO_APIC */ |
1da177e4 | 566 | |
1da177e4 LT |
567 | /* |
568 | * acpi_pic_sci_set_trigger() | |
5f3b1a8b | 569 | * |
1da177e4 LT |
570 | * use ELCR to set PIC-mode trigger type for SCI |
571 | * | |
572 | * If a PIC-mode SCI is not recognized or gives spurious IRQ7's | |
573 | * it may require Edge Trigger -- use "acpi_sci=edge" | |
574 | * | |
575 | * Port 0x4d0-4d1 are ECLR1 and ECLR2, the Edge/Level Control Registers | |
576 | * for the 8259 PIC. bit[n] = 1 means irq[n] is Level, otherwise Edge. | |
27b46d76 SA |
577 | * ECLR1 is IRQs 0-7 (IRQ 0, 1, 2 must be 0) |
578 | * ECLR2 is IRQs 8-15 (IRQ 8, 13 must be 0) | |
1da177e4 LT |
579 | */ |
580 | ||
4be44fcd | 581 | void __init acpi_pic_sci_set_trigger(unsigned int irq, u16 trigger) |
1da177e4 LT |
582 | { |
583 | unsigned int mask = 1 << irq; | |
584 | unsigned int old, new; | |
585 | ||
586 | /* Real old ELCR mask */ | |
587 | old = inb(0x4d0) | (inb(0x4d1) << 8); | |
588 | ||
589 | /* | |
27b46d76 | 590 | * If we use ACPI to set PCI IRQs, then we should clear ELCR |
1da177e4 LT |
591 | * since we will set it correctly as we enable the PCI irq |
592 | * routing. | |
593 | */ | |
594 | new = acpi_noirq ? old : 0; | |
595 | ||
596 | /* | |
597 | * Update SCI information in the ELCR, it isn't in the PCI | |
598 | * routing tables.. | |
599 | */ | |
600 | switch (trigger) { | |
4be44fcd | 601 | case 1: /* Edge - clear */ |
1da177e4 LT |
602 | new &= ~mask; |
603 | break; | |
4be44fcd | 604 | case 3: /* Level - set */ |
1da177e4 LT |
605 | new |= mask; |
606 | break; | |
607 | } | |
608 | ||
609 | if (old == new) | |
610 | return; | |
611 | ||
612 | printk(PREFIX "setting ELCR to %04x (from %04x)\n", new, old); | |
613 | outb(new, 0x4d0); | |
614 | outb(new >> 8, 0x4d1); | |
615 | } | |
616 | ||
1da177e4 LT |
617 | int acpi_gsi_to_irq(u32 gsi, unsigned int *irq) |
618 | { | |
988856ee | 619 | *irq = gsi_to_irq(gsi); |
18dce6ba YL |
620 | |
621 | #ifdef CONFIG_X86_IO_APIC | |
622 | if (acpi_irq_model == ACPI_IRQ_MODEL_IOAPIC) | |
623 | setup_IO_APIC_irq_extra(gsi); | |
624 | #endif | |
625 | ||
1da177e4 LT |
626 | return 0; |
627 | } | |
81e88fdc | 628 | EXPORT_SYMBOL_GPL(acpi_gsi_to_irq); |
1da177e4 | 629 | |
2c2df841 EB |
630 | int acpi_isa_irq_to_gsi(unsigned isa_irq, u32 *gsi) |
631 | { | |
95d76acc | 632 | if (isa_irq < nr_legacy_irqs() && |
2e0ad0e2 | 633 | isa_irq_to_gsi[isa_irq] != ACPI_INVALID_GSI) { |
032329ee JL |
634 | *gsi = isa_irq_to_gsi[isa_irq]; |
635 | return 0; | |
636 | } | |
637 | ||
638 | return -1; | |
2c2df841 EB |
639 | } |
640 | ||
2f065aef JF |
641 | static int acpi_register_gsi_pic(struct device *dev, u32 gsi, |
642 | int trigger, int polarity) | |
1da177e4 | 643 | { |
1da177e4 LT |
644 | #ifdef CONFIG_PCI |
645 | /* | |
646 | * Make sure all (legacy) PCI IRQs are set as level-triggered. | |
647 | */ | |
2f065aef JF |
648 | if (trigger == ACPI_LEVEL_SENSITIVE) |
649 | eisa_set_level_irq(gsi); | |
1da177e4 LT |
650 | #endif |
651 | ||
2f065aef JF |
652 | return gsi; |
653 | } | |
654 | ||
655 | static int acpi_register_gsi_ioapic(struct device *dev, u32 gsi, | |
656 | int trigger, int polarity) | |
657 | { | |
1da177e4 | 658 | #ifdef CONFIG_X86_IO_APIC |
2f065aef | 659 | gsi = mp_register_gsi(dev, gsi, trigger, polarity); |
1da177e4 | 660 | #endif |
2f065aef JF |
661 | |
662 | return gsi; | |
663 | } | |
664 | ||
90f6881e JF |
665 | int (*__acpi_register_gsi)(struct device *dev, u32 gsi, |
666 | int trigger, int polarity) = acpi_register_gsi_pic; | |
2f065aef | 667 | |
d6a77ead KRW |
668 | #ifdef CONFIG_ACPI_SLEEP |
669 | int (*acpi_suspend_lowlevel)(void) = x86_acpi_suspend_lowlevel; | |
670 | #else | |
671 | int (*acpi_suspend_lowlevel)(void); | |
672 | #endif | |
673 | ||
2f065aef JF |
674 | /* |
675 | * success: return IRQ number (>=0) | |
676 | * failure: return < 0 | |
677 | */ | |
678 | int acpi_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity) | |
679 | { | |
2c0a6894 | 680 | unsigned int plat_gsi; |
2f065aef | 681 | |
2c0a6894 JL |
682 | plat_gsi = __acpi_register_gsi(dev, gsi, trigger, polarity); |
683 | if (plat_gsi != ACPI_INVALID_GSI) | |
684 | return gsi_to_irq(plat_gsi); | |
18dce6ba | 685 | |
2c0a6894 | 686 | return -1; |
1da177e4 | 687 | } |
35e92b78 AS |
688 | EXPORT_SYMBOL_GPL(acpi_register_gsi); |
689 | ||
690 | void acpi_unregister_gsi(u32 gsi) | |
691 | { | |
692 | } | |
693 | EXPORT_SYMBOL_GPL(acpi_unregister_gsi); | |
4be44fcd | 694 | |
e819813f | 695 | static void __init acpi_set_irq_model_ioapic(void) |
2f065aef JF |
696 | { |
697 | acpi_irq_model = ACPI_IRQ_MODEL_IOAPIC; | |
698 | __acpi_register_gsi = acpi_register_gsi_ioapic; | |
699 | acpi_ioapic = 1; | |
700 | } | |
701 | ||
1da177e4 LT |
702 | /* |
703 | * ACPI based hotplug support for CPU | |
704 | */ | |
705 | #ifdef CONFIG_ACPI_HOTPLUG_CPU | |
d8191fa4 | 706 | #include <acpi/processor.h> |
009cbadb | 707 | |
148f9bb8 | 708 | static void acpi_map_cpu2node(acpi_handle handle, int cpu, int physid) |
0271f910 HL |
709 | { |
710 | #ifdef CONFIG_ACPI_NUMA | |
711 | int nid; | |
712 | ||
713 | nid = acpi_get_node(handle); | |
896dc506 JL |
714 | if (nid != -1) { |
715 | set_apicid_to_node(physid, nid); | |
716 | numa_set_node(cpu, nid); | |
717 | } | |
0271f910 HL |
718 | #endif |
719 | } | |
009cbadb | 720 | |
d536bf3d | 721 | static int _acpi_map_lsapic(acpi_handle handle, int physid, int *pcpu) |
1da177e4 | 722 | { |
73fea175 | 723 | int cpu; |
ee943a82 | 724 | |
7e1f85f9 JL |
725 | cpu = acpi_register_lapic(physid, ACPI_MADT_ENABLED); |
726 | if (cpu < 0) { | |
727 | pr_info(PREFIX "Unable to map lapic to logical cpu number\n"); | |
728 | return cpu; | |
73fea175 AR |
729 | } |
730 | ||
d8191fa4 | 731 | acpi_processor_set_pdc(handle); |
0271f910 | 732 | acpi_map_cpu2node(handle, cpu, physid); |
73fea175 AR |
733 | |
734 | *pcpu = cpu; | |
7e1f85f9 | 735 | return 0; |
1da177e4 | 736 | } |
1da177e4 | 737 | |
009cbadb | 738 | /* wrapper to silence section mismatch warning */ |
d536bf3d | 739 | int __ref acpi_map_lsapic(acpi_handle handle, int physid, int *pcpu) |
009cbadb | 740 | { |
d536bf3d | 741 | return _acpi_map_lsapic(handle, physid, pcpu); |
009cbadb | 742 | } |
4be44fcd | 743 | EXPORT_SYMBOL(acpi_map_lsapic); |
1da177e4 | 744 | |
4be44fcd | 745 | int acpi_unmap_lsapic(int cpu) |
1da177e4 | 746 | { |
c4c60524 WC |
747 | #ifdef CONFIG_ACPI_NUMA |
748 | set_apicid_to_node(per_cpu(x86_cpu_to_apicid, cpu), NUMA_NO_NODE); | |
749 | #endif | |
750 | ||
71fff5e6 | 751 | per_cpu(x86_cpu_to_apicid, cpu) = -1; |
9628937d | 752 | set_cpu_present(cpu, false); |
73fea175 AR |
753 | num_processors--; |
754 | ||
755 | return (0); | |
1da177e4 | 756 | } |
4be44fcd | 757 | |
1da177e4 | 758 | EXPORT_SYMBOL(acpi_unmap_lsapic); |
4be44fcd | 759 | #endif /* CONFIG_ACPI_HOTPLUG_CPU */ |
1da177e4 | 760 | |
4be44fcd | 761 | int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base) |
b1bb248a KK |
762 | { |
763 | /* TBD */ | |
764 | return -EINVAL; | |
765 | } | |
4be44fcd | 766 | |
b1bb248a KK |
767 | EXPORT_SYMBOL(acpi_register_ioapic); |
768 | ||
4be44fcd | 769 | int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base) |
b1bb248a KK |
770 | { |
771 | /* TBD */ | |
772 | return -EINVAL; | |
773 | } | |
4be44fcd | 774 | |
b1bb248a KK |
775 | EXPORT_SYMBOL(acpi_unregister_ioapic); |
776 | ||
5f3b1a8b | 777 | static int __init acpi_parse_sbf(struct acpi_table_header *table) |
1da177e4 | 778 | { |
5f3b1a8b | 779 | struct acpi_table_boot *sb; |
1da177e4 | 780 | |
5f3b1a8b | 781 | sb = (struct acpi_table_boot *)table; |
1da177e4 LT |
782 | if (!sb) { |
783 | printk(KERN_WARNING PREFIX "Unable to map SBF\n"); | |
784 | return -ENODEV; | |
785 | } | |
786 | ||
5f3b1a8b | 787 | sbf_port = sb->cmos_index; /* Save CMOS port */ |
1da177e4 LT |
788 | |
789 | return 0; | |
790 | } | |
791 | ||
1da177e4 | 792 | #ifdef CONFIG_HPET_TIMER |
2d0c87c3 | 793 | #include <asm/hpet.h> |
1da177e4 | 794 | |
dd96dc32 | 795 | static struct resource *hpet_res __initdata; |
a1dfd851 | 796 | |
5f3b1a8b | 797 | static int __init acpi_parse_hpet(struct acpi_table_header *table) |
1da177e4 LT |
798 | { |
799 | struct acpi_table_hpet *hpet_tbl; | |
800 | ||
5f3b1a8b | 801 | hpet_tbl = (struct acpi_table_hpet *)table; |
1da177e4 LT |
802 | if (!hpet_tbl) { |
803 | printk(KERN_WARNING PREFIX "Unable to map HPET\n"); | |
804 | return -ENODEV; | |
805 | } | |
806 | ||
ad363f80 | 807 | if (hpet_tbl->address.space_id != ACPI_SPACE_MEM) { |
1da177e4 LT |
808 | printk(KERN_WARNING PREFIX "HPET timers must be located in " |
809 | "memory.\n"); | |
810 | return -1; | |
811 | } | |
f0f4c343 | 812 | |
2d0c87c3 | 813 | hpet_address = hpet_tbl->address.address; |
c8bc6f3c | 814 | hpet_blockid = hpet_tbl->sequence; |
f4df73c2 TG |
815 | |
816 | /* | |
817 | * Some broken BIOSes advertise HPET at 0x0. We really do not | |
818 | * want to allocate a resource there. | |
819 | */ | |
820 | if (!hpet_address) { | |
821 | printk(KERN_WARNING PREFIX | |
822 | "HPET id: %#x base: %#lx is invalid\n", | |
823 | hpet_tbl->id, hpet_address); | |
824 | return 0; | |
825 | } | |
826 | #ifdef CONFIG_X86_64 | |
827 | /* | |
828 | * Some even more broken BIOSes advertise HPET at | |
829 | * 0xfed0000000000000 instead of 0xfed00000. Fix it up and add | |
830 | * some noise: | |
831 | */ | |
832 | if (hpet_address == 0xfed0000000000000UL) { | |
833 | if (!hpet_force_user) { | |
834 | printk(KERN_WARNING PREFIX "HPET id: %#x " | |
835 | "base: 0xfed0000000000000 is bogus\n " | |
836 | "try hpet=force on the kernel command line to " | |
837 | "fix it up to 0xfed00000.\n", hpet_tbl->id); | |
838 | hpet_address = 0; | |
839 | return 0; | |
840 | } | |
841 | printk(KERN_WARNING PREFIX | |
842 | "HPET id: %#x base: 0xfed0000000000000 fixed up " | |
843 | "to 0xfed00000.\n", hpet_tbl->id); | |
844 | hpet_address >>= 32; | |
845 | } | |
846 | #endif | |
4be44fcd | 847 | printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n", |
2d0c87c3 | 848 | hpet_tbl->id, hpet_address); |
1da177e4 | 849 | |
a1dfd851 AD |
850 | /* |
851 | * Allocate and initialize the HPET firmware resource for adding into | |
852 | * the resource tree during the lateinit timeframe. | |
853 | */ | |
854 | #define HPET_RESOURCE_NAME_SIZE 9 | |
855 | hpet_res = alloc_bootmem(sizeof(*hpet_res) + HPET_RESOURCE_NAME_SIZE); | |
856 | ||
a1dfd851 AD |
857 | hpet_res->name = (void *)&hpet_res[1]; |
858 | hpet_res->flags = IORESOURCE_MEM; | |
859 | snprintf((char *)hpet_res->name, HPET_RESOURCE_NAME_SIZE, "HPET %u", | |
860 | hpet_tbl->sequence); | |
861 | ||
862 | hpet_res->start = hpet_address; | |
863 | hpet_res->end = hpet_address + (1 * 1024) - 1; | |
864 | ||
1da177e4 LT |
865 | return 0; |
866 | } | |
a1dfd851 AD |
867 | |
868 | /* | |
869 | * hpet_insert_resource inserts the HPET resources used into the resource | |
870 | * tree. | |
871 | */ | |
872 | static __init int hpet_insert_resource(void) | |
873 | { | |
874 | if (!hpet_res) | |
875 | return 1; | |
876 | ||
877 | return insert_resource(&iomem_resource, hpet_res); | |
878 | } | |
879 | ||
880 | late_initcall(hpet_insert_resource); | |
881 | ||
1da177e4 LT |
882 | #else |
883 | #define acpi_parse_hpet NULL | |
884 | #endif | |
885 | ||
5f3b1a8b | 886 | static int __init acpi_parse_fadt(struct acpi_table_header *table) |
1da177e4 | 887 | { |
90660ec3 | 888 | |
1da177e4 LT |
889 | #ifdef CONFIG_X86_PM_TIMER |
890 | /* detect the location of the ACPI PM Timer */ | |
5f3b1a8b | 891 | if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID) { |
1da177e4 | 892 | /* FADT rev. 2 */ |
5f3b1a8b | 893 | if (acpi_gbl_FADT.xpm_timer_block.space_id != |
4be44fcd | 894 | ACPI_ADR_SPACE_SYSTEM_IO) |
1da177e4 LT |
895 | return 0; |
896 | ||
5f3b1a8b | 897 | pmtmr_ioport = acpi_gbl_FADT.xpm_timer_block.address; |
e6e87b4b DSL |
898 | /* |
899 | * "X" fields are optional extensions to the original V1.0 | |
900 | * fields, so we must selectively expand V1.0 fields if the | |
901 | * corresponding X field is zero. | |
902 | */ | |
903 | if (!pmtmr_ioport) | |
5f3b1a8b | 904 | pmtmr_ioport = acpi_gbl_FADT.pm_timer_block; |
1da177e4 LT |
905 | } else { |
906 | /* FADT rev. 1 */ | |
5f3b1a8b | 907 | pmtmr_ioport = acpi_gbl_FADT.pm_timer_block; |
1da177e4 LT |
908 | } |
909 | if (pmtmr_ioport) | |
4be44fcd LB |
910 | printk(KERN_INFO PREFIX "PM-Timer IO Port: %#x\n", |
911 | pmtmr_ioport); | |
1da177e4 LT |
912 | #endif |
913 | return 0; | |
914 | } | |
915 | ||
1da177e4 LT |
916 | #ifdef CONFIG_X86_LOCAL_APIC |
917 | /* | |
918 | * Parse LAPIC entries in MADT | |
919 | * returns 0 on success, < 0 on error | |
920 | */ | |
31d2092e | 921 | |
cbf9bd60 YL |
922 | static int __init early_acpi_parse_madt_lapic_addr_ovr(void) |
923 | { | |
924 | int count; | |
925 | ||
926 | if (!cpu_has_apic) | |
927 | return -ENODEV; | |
928 | ||
929 | /* | |
930 | * Note that the LAPIC address is obtained from the MADT (32-bit value) | |
931 | * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value). | |
932 | */ | |
933 | ||
e819813f JL |
934 | count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE, |
935 | acpi_parse_lapic_addr_ovr, 0); | |
cbf9bd60 YL |
936 | if (count < 0) { |
937 | printk(KERN_ERR PREFIX | |
938 | "Error parsing LAPIC address override entry\n"); | |
939 | return count; | |
940 | } | |
941 | ||
c0104d38 | 942 | register_lapic_address(acpi_lapic_addr); |
cbf9bd60 YL |
943 | |
944 | return count; | |
945 | } | |
946 | ||
4be44fcd | 947 | static int __init acpi_parse_madt_lapic_entries(void) |
1da177e4 LT |
948 | { |
949 | int count; | |
7237d3de | 950 | int x2count = 0; |
1da177e4 | 951 | |
0fcd2709 AK |
952 | if (!cpu_has_apic) |
953 | return -ENODEV; | |
954 | ||
5f3b1a8b | 955 | /* |
1da177e4 LT |
956 | * Note that the LAPIC address is obtained from the MADT (32-bit value) |
957 | * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value). | |
958 | */ | |
959 | ||
e819813f JL |
960 | count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE, |
961 | acpi_parse_lapic_addr_ovr, 0); | |
1da177e4 | 962 | if (count < 0) { |
4be44fcd LB |
963 | printk(KERN_ERR PREFIX |
964 | "Error parsing LAPIC address override entry\n"); | |
1da177e4 LT |
965 | return count; |
966 | } | |
967 | ||
c0104d38 | 968 | register_lapic_address(acpi_lapic_addr); |
1da177e4 | 969 | |
ac049c1d | 970 | count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_SAPIC, |
cb2ded37 | 971 | acpi_parse_sapic, MAX_LOCAL_APIC); |
ac049c1d | 972 | |
7237d3de SS |
973 | if (!count) { |
974 | x2count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC, | |
cb2ded37 | 975 | acpi_parse_x2apic, MAX_LOCAL_APIC); |
ac049c1d | 976 | count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC, |
cb2ded37 | 977 | acpi_parse_lapic, MAX_LOCAL_APIC); |
7237d3de SS |
978 | } |
979 | if (!count && !x2count) { | |
1da177e4 LT |
980 | printk(KERN_ERR PREFIX "No LAPIC entries present\n"); |
981 | /* TBD: Cleanup to allow fallback to MPS */ | |
982 | return -ENODEV; | |
7237d3de | 983 | } else if (count < 0 || x2count < 0) { |
1da177e4 LT |
984 | printk(KERN_ERR PREFIX "Error parsing LAPIC entry\n"); |
985 | /* TBD: Cleanup to allow fallback to MPS */ | |
986 | return count; | |
987 | } | |
988 | ||
e819813f JL |
989 | x2count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC_NMI, |
990 | acpi_parse_x2apic_nmi, 0); | |
991 | count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI, | |
992 | acpi_parse_lapic_nmi, 0); | |
7237d3de | 993 | if (count < 0 || x2count < 0) { |
1da177e4 LT |
994 | printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n"); |
995 | /* TBD: Cleanup to allow fallback to MPS */ | |
996 | return count; | |
997 | } | |
998 | return 0; | |
999 | } | |
4be44fcd | 1000 | #endif /* CONFIG_X86_LOCAL_APIC */ |
1da177e4 | 1001 | |
8466361a | 1002 | #ifdef CONFIG_X86_IO_APIC |
a491cc90 | 1003 | static void __init mp_config_acpi_legacy_irqs(void) |
11113f84 | 1004 | { |
6df8809b | 1005 | int i; |
c2c21745 | 1006 | struct mpc_intsrc mp_irq; |
11113f84 | 1007 | |
bb8187d3 | 1008 | #ifdef CONFIG_EISA |
11113f84 AS |
1009 | /* |
1010 | * Fabricate the legacy ISA bus (bus #31). | |
1011 | */ | |
1012 | mp_bus_id_to_type[MP_ISA_BUS] = MP_BUS_ISA; | |
1013 | #endif | |
1014 | set_bit(MP_ISA_BUS, mp_bus_not_pci); | |
cfc1b9a6 | 1015 | pr_debug("Bus #%d is ISA\n", MP_ISA_BUS); |
11113f84 | 1016 | |
11113f84 AS |
1017 | /* |
1018 | * Use the default configuration for the IRQs 0-15. Unless | |
1019 | * overridden by (MADT) interrupt source override entries. | |
1020 | */ | |
95d76acc | 1021 | for (i = 0; i < nr_legacy_irqs(); i++) { |
0fd52670 EB |
1022 | int ioapic, pin; |
1023 | unsigned int dstapic; | |
11113f84 | 1024 | int idx; |
0fd52670 EB |
1025 | u32 gsi; |
1026 | ||
1027 | /* Locate the gsi that irq i maps to. */ | |
1028 | if (acpi_isa_irq_to_gsi(i, &gsi)) | |
1029 | continue; | |
1030 | ||
1031 | /* | |
1032 | * Locate the IOAPIC that manages the ISA IRQ. | |
1033 | */ | |
1034 | ioapic = mp_find_ioapic(gsi); | |
1035 | if (ioapic < 0) | |
1036 | continue; | |
1037 | pin = mp_find_ioapic_pin(ioapic, gsi); | |
d5371430 | 1038 | dstapic = mpc_ioapic_id(ioapic); |
11113f84 AS |
1039 | |
1040 | for (idx = 0; idx < mp_irq_entries; idx++) { | |
c2c21745 | 1041 | struct mpc_intsrc *irq = mp_irqs + idx; |
11113f84 AS |
1042 | |
1043 | /* Do we already have a mapping for this ISA IRQ? */ | |
c2c21745 | 1044 | if (irq->srcbus == MP_ISA_BUS && irq->srcbusirq == i) |
11113f84 AS |
1045 | break; |
1046 | ||
1047 | /* Do we already have a mapping for this IOAPIC pin */ | |
0fd52670 | 1048 | if (irq->dstapic == dstapic && irq->dstirq == pin) |
11113f84 AS |
1049 | break; |
1050 | } | |
1051 | ||
1052 | if (idx != mp_irq_entries) { | |
1053 | printk(KERN_DEBUG "ACPI: IRQ%d used by override.\n", i); | |
1054 | continue; /* IRQ already used */ | |
1055 | } | |
1056 | ||
c2c21745 JSR |
1057 | mp_irq.type = MP_INTSRC; |
1058 | mp_irq.irqflag = 0; /* Conforming */ | |
1059 | mp_irq.srcbus = MP_ISA_BUS; | |
1060 | mp_irq.dstapic = dstapic; | |
1061 | mp_irq.irqtype = mp_INT; | |
1062 | mp_irq.srcbusirq = i; /* Identity mapped */ | |
0fd52670 | 1063 | mp_irq.dstirq = pin; |
11113f84 | 1064 | |
2d8009ba | 1065 | mp_save_irq(&mp_irq); |
11113f84 AS |
1066 | } |
1067 | } | |
1068 | ||
1da177e4 LT |
1069 | /* |
1070 | * Parse IOAPIC related entries in MADT | |
1071 | * returns 0 on success, < 0 on error | |
1072 | */ | |
4be44fcd | 1073 | static int __init acpi_parse_madt_ioapic_entries(void) |
1da177e4 LT |
1074 | { |
1075 | int count; | |
1076 | ||
1077 | /* | |
1078 | * ACPI interpreter is required to complete interrupt setup, | |
1079 | * so if it is off, don't enumerate the io-apics with ACPI. | |
1080 | * If MPS is present, it will handle them, | |
1081 | * otherwise the system will stay in PIC mode | |
1082 | */ | |
6b2b171a | 1083 | if (acpi_disabled || acpi_noirq) |
1da177e4 | 1084 | return -ENODEV; |
1da177e4 | 1085 | |
5f3b1a8b | 1086 | if (!cpu_has_apic) |
d3b6a349 AK |
1087 | return -ENODEV; |
1088 | ||
1da177e4 | 1089 | /* |
4be44fcd | 1090 | * if "noapic" boot option, don't look for IO-APICs |
1da177e4 LT |
1091 | */ |
1092 | if (skip_ioapic_setup) { | |
1093 | printk(KERN_INFO PREFIX "Skipping IOAPIC probe " | |
4be44fcd | 1094 | "due to 'noapic' option.\n"); |
1da177e4 LT |
1095 | return -ENODEV; |
1096 | } | |
1097 | ||
e819813f JL |
1098 | count = acpi_table_parse_madt(ACPI_MADT_TYPE_IO_APIC, acpi_parse_ioapic, |
1099 | MAX_IO_APICS); | |
1da177e4 LT |
1100 | if (!count) { |
1101 | printk(KERN_ERR PREFIX "No IOAPIC entries present\n"); | |
1102 | return -ENODEV; | |
4be44fcd | 1103 | } else if (count < 0) { |
1da177e4 LT |
1104 | printk(KERN_ERR PREFIX "Error parsing IOAPIC entry\n"); |
1105 | return count; | |
1106 | } | |
1107 | ||
e819813f JL |
1108 | count = acpi_table_parse_madt(ACPI_MADT_TYPE_INTERRUPT_OVERRIDE, |
1109 | acpi_parse_int_src_ovr, nr_irqs); | |
1da177e4 | 1110 | if (count < 0) { |
4be44fcd LB |
1111 | printk(KERN_ERR PREFIX |
1112 | "Error parsing interrupt source overrides entry\n"); | |
1da177e4 LT |
1113 | /* TBD: Cleanup to allow fallback to MPS */ |
1114 | return count; | |
1115 | } | |
1116 | ||
1117 | /* | |
1118 | * If BIOS did not supply an INT_SRC_OVR for the SCI | |
1119 | * pretend we got one so we can set the SCI flags. | |
1120 | */ | |
1121 | if (!acpi_sci_override_gsi) | |
9d2062b8 EB |
1122 | acpi_sci_ioapic_setup(acpi_gbl_FADT.sci_interrupt, 0, 0, |
1123 | acpi_gbl_FADT.sci_interrupt); | |
1da177e4 | 1124 | |
af901ca1 | 1125 | /* Fill in identity legacy mappings where no override */ |
1da177e4 LT |
1126 | mp_config_acpi_legacy_irqs(); |
1127 | ||
e819813f JL |
1128 | count = acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE, |
1129 | acpi_parse_nmi_src, nr_irqs); | |
1da177e4 LT |
1130 | if (count < 0) { |
1131 | printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n"); | |
1132 | /* TBD: Cleanup to allow fallback to MPS */ | |
1133 | return count; | |
1134 | } | |
1135 | ||
1136 | return 0; | |
1137 | } | |
1138 | #else | |
1139 | static inline int acpi_parse_madt_ioapic_entries(void) | |
1140 | { | |
1141 | return -1; | |
1142 | } | |
8466361a | 1143 | #endif /* !CONFIG_X86_IO_APIC */ |
1da177e4 | 1144 | |
cbf9bd60 YL |
1145 | static void __init early_acpi_process_madt(void) |
1146 | { | |
1147 | #ifdef CONFIG_X86_LOCAL_APIC | |
1148 | int error; | |
1149 | ||
1150 | if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) { | |
1151 | ||
1152 | /* | |
1153 | * Parse MADT LAPIC entries | |
1154 | */ | |
1155 | error = early_acpi_parse_madt_lapic_addr_ovr(); | |
1156 | if (!error) { | |
1157 | acpi_lapic = 1; | |
1158 | smp_found_config = 1; | |
1159 | } | |
1160 | if (error == -EINVAL) { | |
1161 | /* | |
1162 | * Dell Precision Workstation 410, 610 come here. | |
1163 | */ | |
1164 | printk(KERN_ERR PREFIX | |
1165 | "Invalid BIOS MADT, disabling ACPI\n"); | |
1166 | disable_acpi(); | |
1167 | } | |
1168 | } | |
1169 | #endif | |
1170 | } | |
1171 | ||
4be44fcd | 1172 | static void __init acpi_process_madt(void) |
1da177e4 LT |
1173 | { |
1174 | #ifdef CONFIG_X86_LOCAL_APIC | |
7f8f97c3 | 1175 | int error; |
1da177e4 | 1176 | |
7f8f97c3 | 1177 | if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) { |
1da177e4 LT |
1178 | |
1179 | /* | |
1180 | * Parse MADT LAPIC entries | |
1181 | */ | |
1182 | error = acpi_parse_madt_lapic_entries(); | |
1183 | if (!error) { | |
1184 | acpi_lapic = 1; | |
1185 | ||
1186 | /* | |
1187 | * Parse MADT IO-APIC entries | |
1188 | */ | |
1189 | error = acpi_parse_madt_ioapic_entries(); | |
1190 | if (!error) { | |
2f065aef | 1191 | acpi_set_irq_model_ioapic(); |
1da177e4 LT |
1192 | |
1193 | smp_found_config = 1; | |
1da177e4 LT |
1194 | } |
1195 | } | |
1196 | if (error == -EINVAL) { | |
1197 | /* | |
1198 | * Dell Precision Workstation 410, 610 come here. | |
1199 | */ | |
4be44fcd LB |
1200 | printk(KERN_ERR PREFIX |
1201 | "Invalid BIOS MADT, disabling ACPI\n"); | |
1da177e4 LT |
1202 | disable_acpi(); |
1203 | } | |
7b37b5fd LB |
1204 | } else { |
1205 | /* | |
1206 | * ACPI found no MADT, and so ACPI wants UP PIC mode. | |
1207 | * In the event an MPS table was found, forget it. | |
1208 | * Boot with "acpi=off" to use MPS on such a system. | |
1209 | */ | |
1210 | if (smp_found_config) { | |
1211 | printk(KERN_WARNING PREFIX | |
1212 | "No APIC-table, disabling MPS\n"); | |
1213 | smp_found_config = 0; | |
1214 | } | |
1da177e4 | 1215 | } |
69b88afa YL |
1216 | |
1217 | /* | |
1218 | * ACPI supports both logical (e.g. Hyper-Threading) and physical | |
1219 | * processors, where MPS only supports physical. | |
1220 | */ | |
1221 | if (acpi_lapic && acpi_ioapic) | |
1222 | printk(KERN_INFO "Using ACPI (MADT) for SMP configuration " | |
1223 | "information\n"); | |
1224 | else if (acpi_lapic) | |
1225 | printk(KERN_INFO "Using ACPI for processor (LAPIC) " | |
1226 | "configuration information\n"); | |
1da177e4 LT |
1227 | #endif |
1228 | return; | |
1229 | } | |
1230 | ||
1855256c | 1231 | static int __init disable_acpi_irq(const struct dmi_system_id *d) |
aea00143 AP |
1232 | { |
1233 | if (!acpi_force) { | |
1234 | printk(KERN_NOTICE "%s detected: force use of acpi=noirq\n", | |
1235 | d->ident); | |
1236 | acpi_noirq_set(); | |
1237 | } | |
1238 | return 0; | |
1239 | } | |
1240 | ||
1855256c | 1241 | static int __init disable_acpi_pci(const struct dmi_system_id *d) |
aea00143 AP |
1242 | { |
1243 | if (!acpi_force) { | |
1244 | printk(KERN_NOTICE "%s detected: force use of pci=noacpi\n", | |
1245 | d->ident); | |
1246 | acpi_disable_pci(); | |
1247 | } | |
1248 | return 0; | |
1249 | } | |
aea00143 | 1250 | |
1855256c | 1251 | static int __init dmi_disable_acpi(const struct dmi_system_id *d) |
aea00143 AP |
1252 | { |
1253 | if (!acpi_force) { | |
4be44fcd | 1254 | printk(KERN_NOTICE "%s detected: acpi off\n", d->ident); |
aea00143 AP |
1255 | disable_acpi(); |
1256 | } else { | |
1257 | printk(KERN_NOTICE | |
1258 | "Warning: DMI blacklist says broken, but acpi forced\n"); | |
1259 | } | |
1260 | return 0; | |
1261 | } | |
1262 | ||
e2079c43 | 1263 | /* |
ae10ccdc | 1264 | * Force ignoring BIOS IRQ0 override |
e2079c43 RW |
1265 | */ |
1266 | static int __init dmi_ignore_irq0_timer_override(const struct dmi_system_id *d) | |
1267 | { | |
8d89adf4 | 1268 | if (!acpi_skip_timer_override) { |
ae10ccdc | 1269 | pr_notice("%s detected: Ignoring BIOS IRQ0 override\n", |
8d89adf4 IM |
1270 | d->ident); |
1271 | acpi_skip_timer_override = 1; | |
1272 | } | |
e2079c43 RW |
1273 | return 0; |
1274 | } | |
1275 | ||
aea00143 AP |
1276 | /* |
1277 | * If your system is blacklisted here, but you find that acpi=force | |
5b4c0b6f | 1278 | * works for you, please contact linux-acpi@vger.kernel.org |
aea00143 AP |
1279 | */ |
1280 | static struct dmi_system_id __initdata acpi_dmi_table[] = { | |
1281 | /* | |
1282 | * Boxes that need ACPI disabled | |
1283 | */ | |
1284 | { | |
4be44fcd LB |
1285 | .callback = dmi_disable_acpi, |
1286 | .ident = "IBM Thinkpad", | |
1287 | .matches = { | |
1288 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), | |
1289 | DMI_MATCH(DMI_BOARD_NAME, "2629H1G"), | |
1290 | }, | |
1291 | }, | |
aea00143 | 1292 | |
aea00143 AP |
1293 | /* |
1294 | * Boxes that need ACPI PCI IRQ routing disabled | |
1295 | */ | |
1296 | { | |
4be44fcd LB |
1297 | .callback = disable_acpi_irq, |
1298 | .ident = "ASUS A7V", | |
1299 | .matches = { | |
1300 | DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC"), | |
1301 | DMI_MATCH(DMI_BOARD_NAME, "<A7V>"), | |
1302 | /* newer BIOS, Revision 1011, does work */ | |
1303 | DMI_MATCH(DMI_BIOS_VERSION, | |
1304 | "ASUS A7V ACPI BIOS Revision 1007"), | |
1305 | }, | |
1306 | }, | |
74586fca LB |
1307 | { |
1308 | /* | |
1309 | * Latest BIOS for IBM 600E (1.16) has bad pcinum | |
1310 | * for LPC bridge, which is needed for the PCI | |
1311 | * interrupt links to work. DSDT fix is in bug 5966. | |
1312 | * 2645, 2646 model numbers are shared with 600/600E/600X | |
1313 | */ | |
1314 | .callback = disable_acpi_irq, | |
1315 | .ident = "IBM Thinkpad 600 Series 2645", | |
1316 | .matches = { | |
1317 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), | |
1318 | DMI_MATCH(DMI_BOARD_NAME, "2645"), | |
1319 | }, | |
1320 | }, | |
1321 | { | |
1322 | .callback = disable_acpi_irq, | |
1323 | .ident = "IBM Thinkpad 600 Series 2646", | |
1324 | .matches = { | |
1325 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), | |
1326 | DMI_MATCH(DMI_BOARD_NAME, "2646"), | |
1327 | }, | |
1328 | }, | |
aea00143 AP |
1329 | /* |
1330 | * Boxes that need ACPI PCI IRQ routing and PCI scan disabled | |
1331 | */ | |
4be44fcd LB |
1332 | { /* _BBN 0 bug */ |
1333 | .callback = disable_acpi_pci, | |
1334 | .ident = "ASUS PR-DLS", | |
1335 | .matches = { | |
1336 | DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), | |
1337 | DMI_MATCH(DMI_BOARD_NAME, "PR-DLS"), | |
1338 | DMI_MATCH(DMI_BIOS_VERSION, | |
1339 | "ASUS PR-DLS ACPI BIOS Revision 1010"), | |
1340 | DMI_MATCH(DMI_BIOS_DATE, "03/21/2003") | |
1341 | }, | |
1342 | }, | |
aea00143 | 1343 | { |
4be44fcd LB |
1344 | .callback = disable_acpi_pci, |
1345 | .ident = "Acer TravelMate 36x Laptop", | |
1346 | .matches = { | |
1347 | DMI_MATCH(DMI_SYS_VENDOR, "Acer"), | |
1348 | DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 360"), | |
1349 | }, | |
1350 | }, | |
35af2821 AH |
1351 | {} |
1352 | }; | |
1353 | ||
1354 | /* second table for DMI checks that should run after early-quirks */ | |
1355 | static struct dmi_system_id __initdata acpi_dmi_table_late[] = { | |
e2079c43 RW |
1356 | /* |
1357 | * HP laptops which use a DSDT reporting as HP/SB400/10000, | |
1358 | * which includes some code which overrides all temperature | |
1359 | * trip points to 16C if the INTIN2 input of the I/O APIC | |
1360 | * is enabled. This input is incorrectly designated the | |
1361 | * ISA IRQ 0 via an interrupt source override even though | |
1362 | * it is wired to the output of the master 8259A and INTIN0 | |
ae10ccdc | 1363 | * is not connected at all. Force ignoring BIOS IRQ0 |
e2079c43 RW |
1364 | * override in that cases. |
1365 | */ | |
e84956f9 RW |
1366 | { |
1367 | .callback = dmi_ignore_irq0_timer_override, | |
1368 | .ident = "HP nx6115 laptop", | |
1369 | .matches = { | |
1370 | DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), | |
1371 | DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6115"), | |
1372 | }, | |
1373 | }, | |
e2079c43 RW |
1374 | { |
1375 | .callback = dmi_ignore_irq0_timer_override, | |
1376 | .ident = "HP NX6125 laptop", | |
1377 | .matches = { | |
1378 | DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), | |
1379 | DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6125"), | |
1380 | }, | |
1381 | }, | |
1382 | { | |
1383 | .callback = dmi_ignore_irq0_timer_override, | |
1384 | .ident = "HP NX6325 laptop", | |
1385 | .matches = { | |
1386 | DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), | |
1387 | DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6325"), | |
1388 | }, | |
1389 | }, | |
e84956f9 RW |
1390 | { |
1391 | .callback = dmi_ignore_irq0_timer_override, | |
1392 | .ident = "HP 6715b laptop", | |
1393 | .matches = { | |
1394 | DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), | |
1395 | DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq 6715b"), | |
1396 | }, | |
1397 | }, | |
f6b54f08 FT |
1398 | { |
1399 | .callback = dmi_ignore_irq0_timer_override, | |
1400 | .ident = "FUJITSU SIEMENS", | |
1401 | .matches = { | |
1402 | DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), | |
1403 | DMI_MATCH(DMI_PRODUCT_NAME, "AMILO PRO V2030"), | |
1404 | }, | |
1405 | }, | |
4be44fcd | 1406 | {} |
aea00143 AP |
1407 | }; |
1408 | ||
1da177e4 LT |
1409 | /* |
1410 | * acpi_boot_table_init() and acpi_boot_init() | |
1411 | * called from setup_arch(), always. | |
1412 | * 1. checksums all tables | |
1413 | * 2. enumerates lapics | |
1414 | * 3. enumerates io-apics | |
1415 | * | |
1416 | * acpi_table_init() is separate to allow reading SRAT without | |
1417 | * other side effects. | |
1418 | * | |
1419 | * side effects of acpi_boot_init: | |
1420 | * acpi_lapic = 1 if LAPIC found | |
1421 | * acpi_ioapic = 1 if IOAPIC found | |
1422 | * if (acpi_lapic && acpi_ioapic) smp_found_config = 1; | |
1423 | * if acpi_blacklisted() acpi_disabled = 1; | |
1424 | * acpi_irq_model=... | |
1425 | * ... | |
1da177e4 LT |
1426 | */ |
1427 | ||
8558e394 | 1428 | void __init acpi_boot_table_init(void) |
1da177e4 | 1429 | { |
aea00143 | 1430 | dmi_check_system(acpi_dmi_table); |
aea00143 | 1431 | |
1da177e4 LT |
1432 | /* |
1433 | * If acpi_disabled, bail out | |
1da177e4 | 1434 | */ |
68ca4069 | 1435 | if (acpi_disabled) |
8558e394 | 1436 | return; |
1da177e4 | 1437 | |
5f3b1a8b | 1438 | /* |
1da177e4 LT |
1439 | * Initialize the ACPI boot-time table parser. |
1440 | */ | |
8558e394 | 1441 | if (acpi_table_init()) { |
1da177e4 | 1442 | disable_acpi(); |
8558e394 | 1443 | return; |
1da177e4 | 1444 | } |
1da177e4 | 1445 | |
5f3b1a8b | 1446 | acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf); |
1da177e4 LT |
1447 | |
1448 | /* | |
1449 | * blacklist may disable ACPI entirely | |
1450 | */ | |
8558e394 | 1451 | if (acpi_blacklisted()) { |
1da177e4 LT |
1452 | if (acpi_force) { |
1453 | printk(KERN_WARNING PREFIX "acpi=force override\n"); | |
1454 | } else { | |
1455 | printk(KERN_WARNING PREFIX "Disabling ACPI support\n"); | |
1456 | disable_acpi(); | |
8558e394 | 1457 | return; |
1da177e4 LT |
1458 | } |
1459 | } | |
cbf9bd60 YL |
1460 | } |
1461 | ||
1462 | int __init early_acpi_boot_init(void) | |
1463 | { | |
1464 | /* | |
1465 | * If acpi_disabled, bail out | |
cbf9bd60 | 1466 | */ |
68ca4069 | 1467 | if (acpi_disabled) |
cbf9bd60 YL |
1468 | return 1; |
1469 | ||
1470 | /* | |
1471 | * Process the Multiple APIC Description Table (MADT), if present | |
1472 | */ | |
1473 | early_acpi_process_madt(); | |
1da177e4 LT |
1474 | |
1475 | return 0; | |
1476 | } | |
1477 | ||
1da177e4 LT |
1478 | int __init acpi_boot_init(void) |
1479 | { | |
35af2821 AH |
1480 | /* those are executed after early-quirks are executed */ |
1481 | dmi_check_system(acpi_dmi_table_late); | |
1482 | ||
1da177e4 LT |
1483 | /* |
1484 | * If acpi_disabled, bail out | |
1da177e4 | 1485 | */ |
68ca4069 | 1486 | if (acpi_disabled) |
4be44fcd | 1487 | return 1; |
1da177e4 | 1488 | |
5f3b1a8b | 1489 | acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf); |
1da177e4 LT |
1490 | |
1491 | /* | |
1492 | * set sci_int and PM timer address | |
1493 | */ | |
ceb6c468 | 1494 | acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt); |
1da177e4 LT |
1495 | |
1496 | /* | |
1497 | * Process the Multiple APIC Description Table (MADT), if present | |
1498 | */ | |
1499 | acpi_process_madt(); | |
1500 | ||
5f3b1a8b | 1501 | acpi_table_parse(ACPI_SIG_HPET, acpi_parse_hpet); |
1da177e4 | 1502 | |
b72d0db9 TG |
1503 | if (!acpi_noirq) |
1504 | x86_init.pci.init = pci_acpi_init; | |
1505 | ||
1da177e4 LT |
1506 | return 0; |
1507 | } | |
1a3f239d RR |
1508 | |
1509 | static int __init parse_acpi(char *arg) | |
1510 | { | |
1511 | if (!arg) | |
1512 | return -EINVAL; | |
1513 | ||
1514 | /* "acpi=off" disables both ACPI table parsing and interpreter */ | |
1515 | if (strcmp(arg, "off") == 0) { | |
1516 | disable_acpi(); | |
1517 | } | |
1518 | /* acpi=force to over-ride black-list */ | |
1519 | else if (strcmp(arg, "force") == 0) { | |
1520 | acpi_force = 1; | |
1a3f239d RR |
1521 | acpi_disabled = 0; |
1522 | } | |
1523 | /* acpi=strict disables out-of-spec workarounds */ | |
1524 | else if (strcmp(arg, "strict") == 0) { | |
1525 | acpi_strict = 1; | |
1526 | } | |
237889bf ZY |
1527 | /* acpi=rsdt use RSDT instead of XSDT */ |
1528 | else if (strcmp(arg, "rsdt") == 0) { | |
fab46105 | 1529 | acpi_gbl_do_not_use_xsdt = TRUE; |
237889bf | 1530 | } |
1a3f239d RR |
1531 | /* "acpi=noirq" disables ACPI interrupt routing */ |
1532 | else if (strcmp(arg, "noirq") == 0) { | |
1533 | acpi_noirq_set(); | |
aa2110cb LM |
1534 | } |
1535 | /* "acpi=copy_dsdt" copys DSDT */ | |
1536 | else if (strcmp(arg, "copy_dsdt") == 0) { | |
1537 | acpi_gbl_copy_dsdt_locally = 1; | |
9ad95879 NR |
1538 | } |
1539 | /* "acpi=nocmcff" disables FF mode for corrected errors */ | |
1540 | else if (strcmp(arg, "nocmcff") == 0) { | |
1541 | acpi_disable_cmcff = 1; | |
1a3f239d RR |
1542 | } else { |
1543 | /* Core will printk when we return error. */ | |
1544 | return -EINVAL; | |
1545 | } | |
1546 | return 0; | |
1547 | } | |
1548 | early_param("acpi", parse_acpi); | |
1549 | ||
1550 | /* FIXME: Using pci= for an ACPI parameter is a travesty. */ | |
1551 | static int __init parse_pci(char *arg) | |
1552 | { | |
1553 | if (arg && strcmp(arg, "noacpi") == 0) | |
1554 | acpi_disable_pci(); | |
1555 | return 0; | |
1556 | } | |
1557 | early_param("pci", parse_pci); | |
1558 | ||
3c999f14 YL |
1559 | int __init acpi_mps_check(void) |
1560 | { | |
1561 | #if defined(CONFIG_X86_LOCAL_APIC) && !defined(CONFIG_X86_MPPARSE) | |
1562 | /* mptable code is not built-in*/ | |
1563 | if (acpi_disabled || acpi_noirq) { | |
1564 | printk(KERN_WARNING "MPS support code is not built-in.\n" | |
1565 | "Using acpi=off or acpi=noirq or pci=noacpi " | |
1566 | "may have problem\n"); | |
1567 | return 1; | |
1568 | } | |
1569 | #endif | |
1570 | return 0; | |
1571 | } | |
1572 | ||
1a3f239d RR |
1573 | #ifdef CONFIG_X86_IO_APIC |
1574 | static int __init parse_acpi_skip_timer_override(char *arg) | |
1575 | { | |
1576 | acpi_skip_timer_override = 1; | |
1577 | return 0; | |
1578 | } | |
1579 | early_param("acpi_skip_timer_override", parse_acpi_skip_timer_override); | |
fa18f477 AK |
1580 | |
1581 | static int __init parse_acpi_use_timer_override(char *arg) | |
1582 | { | |
1583 | acpi_use_timer_override = 1; | |
1584 | return 0; | |
1585 | } | |
1586 | early_param("acpi_use_timer_override", parse_acpi_use_timer_override); | |
1a3f239d RR |
1587 | #endif /* CONFIG_X86_IO_APIC */ |
1588 | ||
1589 | static int __init setup_acpi_sci(char *s) | |
1590 | { | |
1591 | if (!s) | |
1592 | return -EINVAL; | |
1593 | if (!strcmp(s, "edge")) | |
5f3b1a8b AS |
1594 | acpi_sci_flags = ACPI_MADT_TRIGGER_EDGE | |
1595 | (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK); | |
1a3f239d | 1596 | else if (!strcmp(s, "level")) |
5f3b1a8b AS |
1597 | acpi_sci_flags = ACPI_MADT_TRIGGER_LEVEL | |
1598 | (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK); | |
1a3f239d | 1599 | else if (!strcmp(s, "high")) |
5f3b1a8b AS |
1600 | acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_HIGH | |
1601 | (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK); | |
1a3f239d | 1602 | else if (!strcmp(s, "low")) |
5f3b1a8b AS |
1603 | acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_LOW | |
1604 | (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK); | |
1a3f239d RR |
1605 | else |
1606 | return -EINVAL; | |
1607 | return 0; | |
1608 | } | |
1609 | early_param("acpi_sci", setup_acpi_sci); | |
d0a9081b AM |
1610 | |
1611 | int __acpi_acquire_global_lock(unsigned int *lock) | |
1612 | { | |
1613 | unsigned int old, new, val; | |
1614 | do { | |
1615 | old = *lock; | |
1616 | new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1)); | |
1617 | val = cmpxchg(lock, old, new); | |
1618 | } while (unlikely (val != old)); | |
1619 | return (new < 3) ? -1 : 0; | |
1620 | } | |
1621 | ||
1622 | int __acpi_release_global_lock(unsigned int *lock) | |
1623 | { | |
1624 | unsigned int old, new, val; | |
1625 | do { | |
1626 | old = *lock; | |
1627 | new = old & ~0x3; | |
1628 | val = cmpxchg(lock, old, new); | |
1629 | } while (unlikely (val != old)); | |
1630 | return old & 0x1; | |
1631 | } | |
8e30524d TR |
1632 | |
1633 | void __init arch_reserve_mem_area(acpi_physical_address addr, size_t size) | |
1634 | { | |
1635 | e820_add_region(addr, size, E820_ACPI); | |
1636 | update_e820(); | |
1637 | } |