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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> |
ca7e28aa | 34 | #include <linux/irqdomain.h> |
5a0e3ad6 | 35 | #include <linux/slab.h> |
f0f4c343 | 36 | #include <linux/bootmem.h> |
37 | #include <linux/ioport.h> | |
a31f8205 | 38 | #include <linux/pci.h> |
1da177e4 | 39 | |
b72d0db9 | 40 | #include <asm/pci_x86.h> |
1da177e4 LT |
41 | #include <asm/pgtable.h> |
42 | #include <asm/io_apic.h> | |
43 | #include <asm/apic.h> | |
44 | #include <asm/io.h> | |
1da177e4 | 45 | #include <asm/mpspec.h> |
dfac2189 | 46 | #include <asm/smp.h> |
95d76acc | 47 | #include <asm/i8259.h> |
1da177e4 | 48 | |
d6a77ead | 49 | #include "sleep.h" /* To include x86_acpi_suspend_lowlevel */ |
e8924acb | 50 | static int __initdata acpi_force = 0; |
c636f753 | 51 | int acpi_disabled; |
df3bb57d AK |
52 | EXPORT_SYMBOL(acpi_disabled); |
53 | ||
1da177e4 | 54 | #ifdef CONFIG_X86_64 |
1dcdd3d1 | 55 | # include <asm/proto.h> |
4be44fcd | 56 | #endif /* X86 */ |
1da177e4 | 57 | |
1da177e4 LT |
58 | #define PREFIX "ACPI: " |
59 | ||
90d53909 | 60 | int acpi_noirq; /* skip ACPI IRQ initialization */ |
6e4be1ff YL |
61 | int acpi_pci_disabled; /* skip ACPI PCI scan and IRQ initialization */ |
62 | EXPORT_SYMBOL(acpi_pci_disabled); | |
1da177e4 LT |
63 | |
64 | int acpi_lapic; | |
65 | int acpi_ioapic; | |
66 | int acpi_strict; | |
9ad95879 | 67 | int acpi_disable_cmcff; |
1da177e4 | 68 | |
5f3b1a8b | 69 | u8 acpi_sci_flags __initdata; |
1da177e4 LT |
70 | int acpi_sci_override_gsi __initdata; |
71 | int acpi_skip_timer_override __initdata; | |
fa18f477 | 72 | int acpi_use_timer_override __initdata; |
7f74f8f2 | 73 | int acpi_fix_pin2_polarity __initdata; |
1da177e4 LT |
74 | |
75 | #ifdef CONFIG_X86_LOCAL_APIC | |
76 | static u64 acpi_lapic_addr __initdata = APIC_DEFAULT_PHYS_BASE; | |
77 | #endif | |
78 | ||
1da177e4 LT |
79 | /* -------------------------------------------------------------------------- |
80 | Boot-time Configuration | |
81 | -------------------------------------------------------------------------- */ | |
82 | ||
83 | /* | |
84 | * The default interrupt routing model is PIC (8259). This gets | |
27b46d76 | 85 | * overridden if IOAPICs are enumerated (below). |
1da177e4 | 86 | */ |
4be44fcd | 87 | enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_PIC; |
1da177e4 | 88 | |
1da177e4 | 89 | |
988856ee EB |
90 | /* |
91 | * ISA irqs by default are the first 16 gsis but can be | |
92 | * any gsi as specified by an interrupt source override. | |
93 | */ | |
94 | static u32 isa_irq_to_gsi[NR_IRQS_LEGACY] __read_mostly = { | |
95 | 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 | |
96 | }; | |
97 | ||
2c0a6894 | 98 | #define ACPI_INVALID_GSI INT_MIN |
988856ee | 99 | |
1da177e4 | 100 | /* |
45f1330a ZY |
101 | * This is just a simple wrapper around early_ioremap(), |
102 | * with sanity checks for phys == 0 and size == 0. | |
1da177e4 | 103 | */ |
2fdf0741 | 104 | char *__init __acpi_map_table(unsigned long phys, unsigned long size) |
1da177e4 | 105 | { |
1da177e4 | 106 | |
f34fa82b YL |
107 | if (!phys || !size) |
108 | return NULL; | |
109 | ||
7d97277b YL |
110 | return early_ioremap(phys, size); |
111 | } | |
45f1330a | 112 | |
7d97277b YL |
113 | void __init __acpi_unmap_table(char *map, unsigned long size) |
114 | { | |
115 | if (!map || !size) | |
116 | return; | |
1da177e4 | 117 | |
7d97277b | 118 | early_iounmap(map, size); |
1da177e4 | 119 | } |
1da177e4 | 120 | |
1da177e4 | 121 | #ifdef CONFIG_X86_LOCAL_APIC |
15a58ed1 | 122 | static int __init acpi_parse_madt(struct acpi_table_header *table) |
1da177e4 | 123 | { |
4be44fcd | 124 | struct acpi_table_madt *madt = NULL; |
1da177e4 | 125 | |
15a58ed1 | 126 | if (!cpu_has_apic) |
1da177e4 LT |
127 | return -EINVAL; |
128 | ||
15a58ed1 | 129 | madt = (struct acpi_table_madt *)table; |
1da177e4 LT |
130 | if (!madt) { |
131 | printk(KERN_WARNING PREFIX "Unable to map MADT\n"); | |
132 | return -ENODEV; | |
133 | } | |
134 | ||
ad363f80 AS |
135 | if (madt->address) { |
136 | acpi_lapic_addr = (u64) madt->address; | |
1da177e4 LT |
137 | |
138 | printk(KERN_DEBUG PREFIX "Local APIC address 0x%08x\n", | |
ad363f80 | 139 | madt->address); |
1da177e4 LT |
140 | } |
141 | ||
306db03b IM |
142 | default_acpi_madt_oem_check(madt->header.oem_id, |
143 | madt->header.oem_table_id); | |
4be44fcd | 144 | |
1da177e4 LT |
145 | return 0; |
146 | } | |
147 | ||
7e1f85f9 JL |
148 | /** |
149 | * acpi_register_lapic - register a local apic and generates a logic cpu number | |
150 | * @id: local apic id to register | |
151 | * @enabled: this cpu is enabled or not | |
152 | * | |
153 | * Returns the logic cpu number which maps to the local apic | |
154 | */ | |
155 | static int acpi_register_lapic(int id, u8 enabled) | |
dfac2189 | 156 | { |
fb3bbd6a YL |
157 | unsigned int ver = 0; |
158 | ||
82982d72 | 159 | if (id >= MAX_LOCAL_APIC) { |
d3bd0588 | 160 | printk(KERN_INFO PREFIX "skipped apicid that is too big\n"); |
7e1f85f9 | 161 | return -EINVAL; |
d3bd0588 YL |
162 | } |
163 | ||
dfac2189 AS |
164 | if (!enabled) { |
165 | ++disabled_cpus; | |
7e1f85f9 | 166 | return -EINVAL; |
dfac2189 AS |
167 | } |
168 | ||
fb3bbd6a YL |
169 | if (boot_cpu_physical_apicid != -1U) |
170 | ver = apic_version[boot_cpu_physical_apicid]; | |
fb3bbd6a | 171 | |
7e1f85f9 | 172 | return generic_processor_info(id, ver); |
dfac2189 AS |
173 | } |
174 | ||
7237d3de SS |
175 | static int __init |
176 | acpi_parse_x2apic(struct acpi_subtable_header *header, const unsigned long end) | |
177 | { | |
178 | struct acpi_madt_local_x2apic *processor = NULL; | |
a35fd282 YL |
179 | int apic_id; |
180 | u8 enabled; | |
7237d3de SS |
181 | |
182 | processor = (struct acpi_madt_local_x2apic *)header; | |
183 | ||
184 | if (BAD_MADT_ENTRY(processor, end)) | |
185 | return -EINVAL; | |
186 | ||
187 | acpi_table_print_madt_entry(header); | |
188 | ||
a35fd282 YL |
189 | apic_id = processor->local_apic_id; |
190 | enabled = processor->lapic_flags & ACPI_MADT_ENABLED; | |
7237d3de SS |
191 | #ifdef CONFIG_X86_X2APIC |
192 | /* | |
193 | * We need to register disabled CPU as well to permit | |
194 | * counting disabled CPUs. This allows us to size | |
195 | * cpus_possible_map more accurately, to permit | |
196 | * to not preallocating memory for all NR_CPUS | |
197 | * when we use CPU hotplug. | |
198 | */ | |
b7157acf | 199 | if (!apic->apic_id_valid(apic_id) && enabled) |
a35fd282 YL |
200 | printk(KERN_WARNING PREFIX "x2apic entry ignored\n"); |
201 | else | |
202 | acpi_register_lapic(apic_id, enabled); | |
7237d3de SS |
203 | #else |
204 | printk(KERN_WARNING PREFIX "x2apic entry ignored\n"); | |
205 | #endif | |
206 | ||
207 | return 0; | |
208 | } | |
209 | ||
1da177e4 | 210 | static int __init |
5f3b1a8b | 211 | acpi_parse_lapic(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 212 | { |
5f3b1a8b | 213 | struct acpi_madt_local_apic *processor = NULL; |
1da177e4 | 214 | |
5f3b1a8b | 215 | processor = (struct acpi_madt_local_apic *)header; |
1da177e4 LT |
216 | |
217 | if (BAD_MADT_ENTRY(processor, end)) | |
218 | return -EINVAL; | |
219 | ||
220 | acpi_table_print_madt_entry(header); | |
221 | ||
7f66ae48 AR |
222 | /* |
223 | * We need to register disabled CPU as well to permit | |
224 | * counting disabled CPUs. This allows us to size | |
225 | * cpus_possible_map more accurately, to permit | |
226 | * to not preallocating memory for all NR_CPUS | |
227 | * when we use CPU hotplug. | |
228 | */ | |
dfac2189 AS |
229 | acpi_register_lapic(processor->id, /* APIC ID */ |
230 | processor->lapic_flags & ACPI_MADT_ENABLED); | |
1da177e4 LT |
231 | |
232 | return 0; | |
233 | } | |
234 | ||
ac049c1d JS |
235 | static int __init |
236 | acpi_parse_sapic(struct acpi_subtable_header *header, const unsigned long end) | |
237 | { | |
238 | struct acpi_madt_local_sapic *processor = NULL; | |
239 | ||
240 | processor = (struct acpi_madt_local_sapic *)header; | |
241 | ||
242 | if (BAD_MADT_ENTRY(processor, end)) | |
243 | return -EINVAL; | |
244 | ||
245 | acpi_table_print_madt_entry(header); | |
246 | ||
dfac2189 AS |
247 | acpi_register_lapic((processor->id << 8) | processor->eid,/* APIC ID */ |
248 | processor->lapic_flags & ACPI_MADT_ENABLED); | |
ac049c1d JS |
249 | |
250 | return 0; | |
251 | } | |
252 | ||
1da177e4 | 253 | static int __init |
5f3b1a8b | 254 | acpi_parse_lapic_addr_ovr(struct acpi_subtable_header * header, |
4be44fcd | 255 | const unsigned long end) |
1da177e4 | 256 | { |
5f3b1a8b | 257 | struct acpi_madt_local_apic_override *lapic_addr_ovr = NULL; |
1da177e4 | 258 | |
5f3b1a8b | 259 | lapic_addr_ovr = (struct acpi_madt_local_apic_override *)header; |
1da177e4 LT |
260 | |
261 | if (BAD_MADT_ENTRY(lapic_addr_ovr, end)) | |
262 | return -EINVAL; | |
263 | ||
264 | acpi_lapic_addr = lapic_addr_ovr->address; | |
265 | ||
266 | return 0; | |
267 | } | |
268 | ||
7237d3de SS |
269 | static int __init |
270 | acpi_parse_x2apic_nmi(struct acpi_subtable_header *header, | |
271 | const unsigned long end) | |
272 | { | |
273 | struct acpi_madt_local_x2apic_nmi *x2apic_nmi = NULL; | |
274 | ||
275 | x2apic_nmi = (struct acpi_madt_local_x2apic_nmi *)header; | |
276 | ||
277 | if (BAD_MADT_ENTRY(x2apic_nmi, end)) | |
278 | return -EINVAL; | |
279 | ||
280 | acpi_table_print_madt_entry(header); | |
281 | ||
282 | if (x2apic_nmi->lint != 1) | |
283 | printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n"); | |
284 | ||
285 | return 0; | |
286 | } | |
287 | ||
1da177e4 | 288 | static int __init |
5f3b1a8b | 289 | acpi_parse_lapic_nmi(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 290 | { |
5f3b1a8b | 291 | struct acpi_madt_local_apic_nmi *lapic_nmi = NULL; |
1da177e4 | 292 | |
5f3b1a8b | 293 | lapic_nmi = (struct acpi_madt_local_apic_nmi *)header; |
1da177e4 LT |
294 | |
295 | if (BAD_MADT_ENTRY(lapic_nmi, end)) | |
296 | return -EINVAL; | |
297 | ||
298 | acpi_table_print_madt_entry(header); | |
299 | ||
300 | if (lapic_nmi->lint != 1) | |
301 | printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n"); | |
302 | ||
303 | return 0; | |
304 | } | |
305 | ||
4be44fcd | 306 | #endif /*CONFIG_X86_LOCAL_APIC */ |
1da177e4 | 307 | |
8466361a | 308 | #ifdef CONFIG_X86_IO_APIC |
8d7cdcb9 JL |
309 | #define MP_ISA_BUS 0 |
310 | ||
311 | static void __init mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger, | |
312 | u32 gsi) | |
313 | { | |
314 | int ioapic; | |
315 | int pin; | |
316 | struct mpc_intsrc mp_irq; | |
317 | ||
318 | /* | |
319 | * Convert 'gsi' to 'ioapic.pin'. | |
320 | */ | |
321 | ioapic = mp_find_ioapic(gsi); | |
322 | if (ioapic < 0) | |
323 | return; | |
324 | pin = mp_find_ioapic_pin(ioapic, gsi); | |
325 | ||
326 | /* | |
327 | * TBD: This check is for faulty timer entries, where the override | |
328 | * erroneously sets the trigger to level, resulting in a HUGE | |
329 | * increase of timer interrupts! | |
330 | */ | |
331 | if ((bus_irq == 0) && (trigger == 3)) | |
332 | trigger = 1; | |
333 | ||
334 | mp_irq.type = MP_INTSRC; | |
335 | mp_irq.irqtype = mp_INT; | |
336 | mp_irq.irqflag = (trigger << 2) | polarity; | |
337 | mp_irq.srcbus = MP_ISA_BUS; | |
338 | mp_irq.srcbusirq = bus_irq; /* IRQ */ | |
339 | mp_irq.dstapic = mpc_ioapic_id(ioapic); /* APIC ID */ | |
340 | mp_irq.dstirq = pin; /* INTIN# */ | |
341 | ||
342 | mp_save_irq(&mp_irq); | |
343 | ||
2e0ad0e2 JL |
344 | /* |
345 | * Reset default identity mapping if gsi is also an legacy IRQ, | |
346 | * otherwise there will be more than one entry with the same GSI | |
347 | * and acpi_isa_irq_to_gsi() may give wrong result. | |
348 | */ | |
95d76acc | 349 | if (gsi < nr_legacy_irqs() && isa_irq_to_gsi[gsi] == gsi) |
2e0ad0e2 | 350 | isa_irq_to_gsi[gsi] = ACPI_INVALID_GSI; |
8d7cdcb9 JL |
351 | isa_irq_to_gsi[bus_irq] = gsi; |
352 | } | |
353 | ||
354 | static int mp_config_acpi_gsi(struct device *dev, u32 gsi, int trigger, | |
355 | int polarity) | |
356 | { | |
357 | #ifdef CONFIG_X86_MPPARSE | |
358 | struct mpc_intsrc mp_irq; | |
359 | struct pci_dev *pdev; | |
360 | unsigned char number; | |
361 | unsigned int devfn; | |
362 | int ioapic; | |
363 | u8 pin; | |
364 | ||
365 | if (!acpi_ioapic) | |
366 | return 0; | |
367 | if (!dev || !dev_is_pci(dev)) | |
368 | return 0; | |
369 | ||
370 | pdev = to_pci_dev(dev); | |
371 | number = pdev->bus->number; | |
372 | devfn = pdev->devfn; | |
373 | pin = pdev->pin; | |
374 | /* print the entry should happen on mptable identically */ | |
375 | mp_irq.type = MP_INTSRC; | |
376 | mp_irq.irqtype = mp_INT; | |
377 | mp_irq.irqflag = (trigger == ACPI_EDGE_SENSITIVE ? 4 : 0x0c) | | |
378 | (polarity == ACPI_ACTIVE_HIGH ? 1 : 3); | |
379 | mp_irq.srcbus = number; | |
380 | mp_irq.srcbusirq = (((devfn >> 3) & 0x1f) << 2) | ((pin - 1) & 3); | |
381 | ioapic = mp_find_ioapic(gsi); | |
382 | mp_irq.dstapic = mpc_ioapic_id(ioapic); | |
383 | mp_irq.dstirq = mp_find_ioapic_pin(ioapic, gsi); | |
384 | ||
385 | mp_save_irq(&mp_irq); | |
386 | #endif | |
387 | return 0; | |
388 | } | |
389 | ||
a491cc90 | 390 | static int mp_register_gsi(struct device *dev, u32 gsi, int trigger, |
8d7cdcb9 JL |
391 | int polarity) |
392 | { | |
d7b83001 | 393 | int irq, node; |
8d7cdcb9 JL |
394 | |
395 | if (acpi_irq_model != ACPI_IRQ_MODEL_IOAPIC) | |
396 | return gsi; | |
397 | ||
398 | /* Don't set up the ACPI SCI because it's already set up */ | |
399 | if (acpi_gbl_FADT.sci_interrupt == gsi) | |
b77e8f43 | 400 | return mp_map_gsi_to_irq(gsi, IOAPIC_MAP_ALLOC); |
8d7cdcb9 | 401 | |
d7b83001 JL |
402 | trigger = trigger == ACPI_EDGE_SENSITIVE ? 0 : 1; |
403 | polarity = polarity == ACPI_ACTIVE_HIGH ? 0 : 1; | |
404 | node = dev ? dev_to_node(dev) : NUMA_NO_NODE; | |
405 | if (mp_set_gsi_attr(gsi, trigger, polarity, node)) { | |
406 | pr_warn("Failed to set pin attr for GSI%d\n", gsi); | |
407 | return -1; | |
408 | } | |
409 | ||
16ee7b3d | 410 | irq = mp_map_gsi_to_irq(gsi, IOAPIC_MAP_ALLOC); |
6b9fb708 | 411 | if (irq < 0) |
84245af7 | 412 | return irq; |
6b9fb708 | 413 | |
8d7cdcb9 JL |
414 | if (enable_update_mptable) |
415 | mp_config_acpi_gsi(dev, gsi, trigger, polarity); | |
416 | ||
84245af7 | 417 | return irq; |
8d7cdcb9 JL |
418 | } |
419 | ||
6a38fa0e JL |
420 | static void mp_unregister_gsi(u32 gsi) |
421 | { | |
422 | int irq; | |
423 | ||
424 | if (acpi_irq_model != ACPI_IRQ_MODEL_IOAPIC) | |
425 | return; | |
426 | ||
427 | if (acpi_gbl_FADT.sci_interrupt == gsi) | |
428 | return; | |
429 | ||
430 | irq = mp_map_gsi_to_irq(gsi, 0); | |
431 | if (irq > 0) | |
432 | mp_unmap_irq(irq); | |
433 | } | |
434 | ||
d7b83001 JL |
435 | static struct irq_domain_ops acpi_irqdomain_ops = { |
436 | .map = mp_irqdomain_map, | |
6a38fa0e | 437 | .unmap = mp_irqdomain_unmap, |
d7b83001 | 438 | }; |
1da177e4 LT |
439 | |
440 | static int __init | |
5f3b1a8b | 441 | acpi_parse_ioapic(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 442 | { |
5f3b1a8b | 443 | struct acpi_madt_io_apic *ioapic = NULL; |
ca7e28aa JL |
444 | struct ioapic_domain_cfg cfg = { |
445 | .type = IOAPIC_DOMAIN_DYNAMIC, | |
446 | .ops = &acpi_irqdomain_ops, | |
447 | }; | |
1da177e4 | 448 | |
5f3b1a8b | 449 | ioapic = (struct acpi_madt_io_apic *)header; |
1da177e4 LT |
450 | |
451 | if (BAD_MADT_ENTRY(ioapic, end)) | |
452 | return -EINVAL; | |
4be44fcd | 453 | |
1da177e4 LT |
454 | acpi_table_print_madt_entry(header); |
455 | ||
ca7e28aa JL |
456 | /* Statically assign IRQ numbers for IOAPICs hosting legacy IRQs */ |
457 | if (ioapic->global_irq_base < nr_legacy_irqs()) | |
458 | cfg.type = IOAPIC_DOMAIN_LEGACY; | |
459 | ||
460 | mp_register_ioapic(ioapic->id, ioapic->address, ioapic->global_irq_base, | |
461 | &cfg); | |
4be44fcd | 462 | |
1da177e4 LT |
463 | return 0; |
464 | } | |
465 | ||
466 | /* | |
467 | * Parse Interrupt Source Override for the ACPI SCI | |
468 | */ | |
9d2062b8 | 469 | static void __init acpi_sci_ioapic_setup(u8 bus_irq, u16 polarity, u16 trigger, u32 gsi) |
1da177e4 LT |
470 | { |
471 | if (trigger == 0) /* compatible SCI trigger is level */ | |
472 | trigger = 3; | |
473 | ||
474 | if (polarity == 0) /* compatible SCI polarity is low */ | |
475 | polarity = 3; | |
476 | ||
477 | /* Command-line over-ride via acpi_sci= */ | |
5f3b1a8b AS |
478 | if (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) |
479 | trigger = (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) >> 2; | |
1da177e4 | 480 | |
5f3b1a8b AS |
481 | if (acpi_sci_flags & ACPI_MADT_POLARITY_MASK) |
482 | polarity = acpi_sci_flags & ACPI_MADT_POLARITY_MASK; | |
1da177e4 | 483 | |
9d2062b8 | 484 | mp_override_legacy_irq(bus_irq, polarity, trigger, gsi); |
1da177e4 LT |
485 | |
486 | /* | |
487 | * stash over-ride to indicate we've been here | |
cee324b1 | 488 | * and for later update of acpi_gbl_FADT |
1da177e4 | 489 | */ |
7bdd21ce | 490 | acpi_sci_override_gsi = gsi; |
1da177e4 LT |
491 | return; |
492 | } | |
493 | ||
494 | static int __init | |
5f3b1a8b | 495 | acpi_parse_int_src_ovr(struct acpi_subtable_header * header, |
4be44fcd | 496 | const unsigned long end) |
1da177e4 | 497 | { |
5f3b1a8b | 498 | struct acpi_madt_interrupt_override *intsrc = NULL; |
1da177e4 | 499 | |
5f3b1a8b | 500 | intsrc = (struct acpi_madt_interrupt_override *)header; |
1da177e4 LT |
501 | |
502 | if (BAD_MADT_ENTRY(intsrc, end)) | |
503 | return -EINVAL; | |
504 | ||
505 | acpi_table_print_madt_entry(header); | |
506 | ||
5f3b1a8b | 507 | if (intsrc->source_irq == acpi_gbl_FADT.sci_interrupt) { |
9d2062b8 | 508 | acpi_sci_ioapic_setup(intsrc->source_irq, |
5f3b1a8b | 509 | intsrc->inti_flags & ACPI_MADT_POLARITY_MASK, |
9d2062b8 EB |
510 | (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2, |
511 | intsrc->global_irq); | |
1da177e4 LT |
512 | return 0; |
513 | } | |
514 | ||
ae10ccdc | 515 | if (intsrc->source_irq == 0) { |
7f74f8f2 | 516 | if (acpi_skip_timer_override) { |
ae10ccdc | 517 | printk(PREFIX "BIOS IRQ0 override ignored.\n"); |
7f74f8f2 AH |
518 | return 0; |
519 | } | |
ae10ccdc FT |
520 | |
521 | if ((intsrc->global_irq == 2) && acpi_fix_pin2_polarity | |
522 | && (intsrc->inti_flags & ACPI_MADT_POLARITY_MASK)) { | |
7f74f8f2 AH |
523 | intsrc->inti_flags &= ~ACPI_MADT_POLARITY_MASK; |
524 | printk(PREFIX "BIOS IRQ0 pin2 override: forcing polarity to high active.\n"); | |
525 | } | |
1da177e4 LT |
526 | } |
527 | ||
5f3b1a8b AS |
528 | mp_override_legacy_irq(intsrc->source_irq, |
529 | intsrc->inti_flags & ACPI_MADT_POLARITY_MASK, | |
530 | (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2, | |
531 | intsrc->global_irq); | |
1da177e4 LT |
532 | |
533 | return 0; | |
534 | } | |
535 | ||
1da177e4 | 536 | static int __init |
5f3b1a8b | 537 | acpi_parse_nmi_src(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 538 | { |
5f3b1a8b | 539 | struct acpi_madt_nmi_source *nmi_src = NULL; |
1da177e4 | 540 | |
5f3b1a8b | 541 | nmi_src = (struct acpi_madt_nmi_source *)header; |
1da177e4 LT |
542 | |
543 | if (BAD_MADT_ENTRY(nmi_src, end)) | |
544 | return -EINVAL; | |
545 | ||
546 | acpi_table_print_madt_entry(header); | |
547 | ||
548 | /* TBD: Support nimsrc entries? */ | |
549 | ||
550 | return 0; | |
551 | } | |
552 | ||
4be44fcd | 553 | #endif /* CONFIG_X86_IO_APIC */ |
1da177e4 | 554 | |
1da177e4 LT |
555 | /* |
556 | * acpi_pic_sci_set_trigger() | |
5f3b1a8b | 557 | * |
1da177e4 LT |
558 | * use ELCR to set PIC-mode trigger type for SCI |
559 | * | |
560 | * If a PIC-mode SCI is not recognized or gives spurious IRQ7's | |
561 | * it may require Edge Trigger -- use "acpi_sci=edge" | |
562 | * | |
563 | * Port 0x4d0-4d1 are ECLR1 and ECLR2, the Edge/Level Control Registers | |
564 | * for the 8259 PIC. bit[n] = 1 means irq[n] is Level, otherwise Edge. | |
27b46d76 SA |
565 | * ECLR1 is IRQs 0-7 (IRQ 0, 1, 2 must be 0) |
566 | * ECLR2 is IRQs 8-15 (IRQ 8, 13 must be 0) | |
1da177e4 LT |
567 | */ |
568 | ||
4be44fcd | 569 | void __init acpi_pic_sci_set_trigger(unsigned int irq, u16 trigger) |
1da177e4 LT |
570 | { |
571 | unsigned int mask = 1 << irq; | |
572 | unsigned int old, new; | |
573 | ||
574 | /* Real old ELCR mask */ | |
575 | old = inb(0x4d0) | (inb(0x4d1) << 8); | |
576 | ||
577 | /* | |
27b46d76 | 578 | * If we use ACPI to set PCI IRQs, then we should clear ELCR |
1da177e4 LT |
579 | * since we will set it correctly as we enable the PCI irq |
580 | * routing. | |
581 | */ | |
582 | new = acpi_noirq ? old : 0; | |
583 | ||
584 | /* | |
585 | * Update SCI information in the ELCR, it isn't in the PCI | |
586 | * routing tables.. | |
587 | */ | |
588 | switch (trigger) { | |
4be44fcd | 589 | case 1: /* Edge - clear */ |
1da177e4 LT |
590 | new &= ~mask; |
591 | break; | |
4be44fcd | 592 | case 3: /* Level - set */ |
1da177e4 LT |
593 | new |= mask; |
594 | break; | |
595 | } | |
596 | ||
597 | if (old == new) | |
598 | return; | |
599 | ||
600 | printk(PREFIX "setting ELCR to %04x (from %04x)\n", new, old); | |
601 | outb(new, 0x4d0); | |
602 | outb(new >> 8, 0x4d1); | |
603 | } | |
604 | ||
6b9fb708 | 605 | int acpi_gsi_to_irq(u32 gsi, unsigned int *irqp) |
1da177e4 | 606 | { |
961b6a70 | 607 | int irq; |
18dce6ba | 608 | |
961b6a70 JL |
609 | if (acpi_irq_model == ACPI_IRQ_MODEL_PIC) { |
610 | *irqp = gsi; | |
611 | } else { | |
612 | irq = mp_map_gsi_to_irq(gsi, | |
613 | IOAPIC_MAP_ALLOC | IOAPIC_MAP_CHECK); | |
614 | if (irq < 0) | |
615 | return -1; | |
6b9fb708 | 616 | *irqp = irq; |
6b9fb708 | 617 | } |
961b6a70 | 618 | return 0; |
1da177e4 | 619 | } |
81e88fdc | 620 | EXPORT_SYMBOL_GPL(acpi_gsi_to_irq); |
1da177e4 | 621 | |
2c2df841 EB |
622 | int acpi_isa_irq_to_gsi(unsigned isa_irq, u32 *gsi) |
623 | { | |
95d76acc | 624 | if (isa_irq < nr_legacy_irqs() && |
2e0ad0e2 | 625 | isa_irq_to_gsi[isa_irq] != ACPI_INVALID_GSI) { |
032329ee JL |
626 | *gsi = isa_irq_to_gsi[isa_irq]; |
627 | return 0; | |
628 | } | |
629 | ||
630 | return -1; | |
2c2df841 EB |
631 | } |
632 | ||
2f065aef JF |
633 | static int acpi_register_gsi_pic(struct device *dev, u32 gsi, |
634 | int trigger, int polarity) | |
1da177e4 | 635 | { |
1da177e4 LT |
636 | #ifdef CONFIG_PCI |
637 | /* | |
638 | * Make sure all (legacy) PCI IRQs are set as level-triggered. | |
639 | */ | |
2f065aef JF |
640 | if (trigger == ACPI_LEVEL_SENSITIVE) |
641 | eisa_set_level_irq(gsi); | |
1da177e4 LT |
642 | #endif |
643 | ||
2f065aef JF |
644 | return gsi; |
645 | } | |
646 | ||
647 | static int acpi_register_gsi_ioapic(struct device *dev, u32 gsi, | |
648 | int trigger, int polarity) | |
649 | { | |
84245af7 JL |
650 | int irq = gsi; |
651 | ||
1da177e4 | 652 | #ifdef CONFIG_X86_IO_APIC |
84245af7 | 653 | irq = mp_register_gsi(dev, gsi, trigger, polarity); |
1da177e4 | 654 | #endif |
2f065aef | 655 | |
84245af7 | 656 | return irq; |
2f065aef JF |
657 | } |
658 | ||
6a38fa0e JL |
659 | static void acpi_unregister_gsi_ioapic(u32 gsi) |
660 | { | |
661 | #ifdef CONFIG_X86_IO_APIC | |
662 | mp_unregister_gsi(gsi); | |
663 | #endif | |
2f065aef JF |
664 | } |
665 | ||
90f6881e JF |
666 | int (*__acpi_register_gsi)(struct device *dev, u32 gsi, |
667 | int trigger, int polarity) = acpi_register_gsi_pic; | |
6a38fa0e | 668 | void (*__acpi_unregister_gsi)(u32 gsi) = NULL; |
2f065aef | 669 | |
d6a77ead KRW |
670 | #ifdef CONFIG_ACPI_SLEEP |
671 | int (*acpi_suspend_lowlevel)(void) = x86_acpi_suspend_lowlevel; | |
672 | #else | |
673 | int (*acpi_suspend_lowlevel)(void); | |
674 | #endif | |
675 | ||
2f065aef JF |
676 | /* |
677 | * success: return IRQ number (>=0) | |
678 | * failure: return < 0 | |
679 | */ | |
680 | int acpi_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity) | |
681 | { | |
84245af7 | 682 | return __acpi_register_gsi(dev, gsi, trigger, polarity); |
1da177e4 | 683 | } |
35e92b78 AS |
684 | EXPORT_SYMBOL_GPL(acpi_register_gsi); |
685 | ||
686 | void acpi_unregister_gsi(u32 gsi) | |
687 | { | |
6a38fa0e JL |
688 | if (__acpi_unregister_gsi) |
689 | __acpi_unregister_gsi(gsi); | |
35e92b78 AS |
690 | } |
691 | EXPORT_SYMBOL_GPL(acpi_unregister_gsi); | |
4be44fcd | 692 | |
e819813f | 693 | static void __init acpi_set_irq_model_ioapic(void) |
2f065aef JF |
694 | { |
695 | acpi_irq_model = ACPI_IRQ_MODEL_IOAPIC; | |
696 | __acpi_register_gsi = acpi_register_gsi_ioapic; | |
6a38fa0e | 697 | __acpi_unregister_gsi = acpi_unregister_gsi_ioapic; |
2f065aef JF |
698 | acpi_ioapic = 1; |
699 | } | |
700 | ||
1da177e4 LT |
701 | /* |
702 | * ACPI based hotplug support for CPU | |
703 | */ | |
704 | #ifdef CONFIG_ACPI_HOTPLUG_CPU | |
d8191fa4 | 705 | #include <acpi/processor.h> |
009cbadb | 706 | |
148f9bb8 | 707 | static void acpi_map_cpu2node(acpi_handle handle, int cpu, int physid) |
0271f910 HL |
708 | { |
709 | #ifdef CONFIG_ACPI_NUMA | |
710 | int nid; | |
711 | ||
712 | nid = acpi_get_node(handle); | |
896dc506 JL |
713 | if (nid != -1) { |
714 | set_apicid_to_node(physid, nid); | |
715 | numa_set_node(cpu, nid); | |
716 | } | |
0271f910 HL |
717 | #endif |
718 | } | |
009cbadb | 719 | |
d536bf3d | 720 | static int _acpi_map_lsapic(acpi_handle handle, int physid, int *pcpu) |
1da177e4 | 721 | { |
73fea175 | 722 | int cpu; |
ee943a82 | 723 | |
7e1f85f9 JL |
724 | cpu = acpi_register_lapic(physid, ACPI_MADT_ENABLED); |
725 | if (cpu < 0) { | |
726 | pr_info(PREFIX "Unable to map lapic to logical cpu number\n"); | |
727 | return cpu; | |
73fea175 AR |
728 | } |
729 | ||
d8191fa4 | 730 | acpi_processor_set_pdc(handle); |
0271f910 | 731 | acpi_map_cpu2node(handle, cpu, physid); |
73fea175 AR |
732 | |
733 | *pcpu = cpu; | |
7e1f85f9 | 734 | return 0; |
1da177e4 | 735 | } |
1da177e4 | 736 | |
009cbadb | 737 | /* wrapper to silence section mismatch warning */ |
d536bf3d | 738 | int __ref acpi_map_lsapic(acpi_handle handle, int physid, int *pcpu) |
009cbadb | 739 | { |
d536bf3d | 740 | return _acpi_map_lsapic(handle, physid, pcpu); |
009cbadb | 741 | } |
4be44fcd | 742 | EXPORT_SYMBOL(acpi_map_lsapic); |
1da177e4 | 743 | |
4be44fcd | 744 | int acpi_unmap_lsapic(int cpu) |
1da177e4 | 745 | { |
c4c60524 WC |
746 | #ifdef CONFIG_ACPI_NUMA |
747 | set_apicid_to_node(per_cpu(x86_cpu_to_apicid, cpu), NUMA_NO_NODE); | |
748 | #endif | |
749 | ||
71fff5e6 | 750 | per_cpu(x86_cpu_to_apicid, cpu) = -1; |
9628937d | 751 | set_cpu_present(cpu, false); |
73fea175 AR |
752 | num_processors--; |
753 | ||
754 | return (0); | |
1da177e4 | 755 | } |
4be44fcd | 756 | |
1da177e4 | 757 | EXPORT_SYMBOL(acpi_unmap_lsapic); |
4be44fcd | 758 | #endif /* CONFIG_ACPI_HOTPLUG_CPU */ |
1da177e4 | 759 | |
4be44fcd | 760 | int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base) |
b1bb248a KK |
761 | { |
762 | /* TBD */ | |
763 | return -EINVAL; | |
764 | } | |
4be44fcd | 765 | |
b1bb248a KK |
766 | EXPORT_SYMBOL(acpi_register_ioapic); |
767 | ||
4be44fcd | 768 | int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base) |
b1bb248a KK |
769 | { |
770 | /* TBD */ | |
771 | return -EINVAL; | |
772 | } | |
4be44fcd | 773 | |
b1bb248a KK |
774 | EXPORT_SYMBOL(acpi_unregister_ioapic); |
775 | ||
5f3b1a8b | 776 | static int __init acpi_parse_sbf(struct acpi_table_header *table) |
1da177e4 | 777 | { |
5f3b1a8b | 778 | struct acpi_table_boot *sb; |
1da177e4 | 779 | |
5f3b1a8b | 780 | sb = (struct acpi_table_boot *)table; |
1da177e4 LT |
781 | if (!sb) { |
782 | printk(KERN_WARNING PREFIX "Unable to map SBF\n"); | |
783 | return -ENODEV; | |
784 | } | |
785 | ||
5f3b1a8b | 786 | sbf_port = sb->cmos_index; /* Save CMOS port */ |
1da177e4 LT |
787 | |
788 | return 0; | |
789 | } | |
790 | ||
1da177e4 | 791 | #ifdef CONFIG_HPET_TIMER |
2d0c87c3 | 792 | #include <asm/hpet.h> |
1da177e4 | 793 | |
dd96dc32 | 794 | static struct resource *hpet_res __initdata; |
a1dfd851 | 795 | |
5f3b1a8b | 796 | static int __init acpi_parse_hpet(struct acpi_table_header *table) |
1da177e4 LT |
797 | { |
798 | struct acpi_table_hpet *hpet_tbl; | |
799 | ||
5f3b1a8b | 800 | hpet_tbl = (struct acpi_table_hpet *)table; |
1da177e4 LT |
801 | if (!hpet_tbl) { |
802 | printk(KERN_WARNING PREFIX "Unable to map HPET\n"); | |
803 | return -ENODEV; | |
804 | } | |
805 | ||
ad363f80 | 806 | if (hpet_tbl->address.space_id != ACPI_SPACE_MEM) { |
1da177e4 LT |
807 | printk(KERN_WARNING PREFIX "HPET timers must be located in " |
808 | "memory.\n"); | |
809 | return -1; | |
810 | } | |
f0f4c343 | 811 | |
2d0c87c3 | 812 | hpet_address = hpet_tbl->address.address; |
c8bc6f3c | 813 | hpet_blockid = hpet_tbl->sequence; |
f4df73c2 TG |
814 | |
815 | /* | |
816 | * Some broken BIOSes advertise HPET at 0x0. We really do not | |
817 | * want to allocate a resource there. | |
818 | */ | |
819 | if (!hpet_address) { | |
820 | printk(KERN_WARNING PREFIX | |
821 | "HPET id: %#x base: %#lx is invalid\n", | |
822 | hpet_tbl->id, hpet_address); | |
823 | return 0; | |
824 | } | |
825 | #ifdef CONFIG_X86_64 | |
826 | /* | |
827 | * Some even more broken BIOSes advertise HPET at | |
828 | * 0xfed0000000000000 instead of 0xfed00000. Fix it up and add | |
829 | * some noise: | |
830 | */ | |
831 | if (hpet_address == 0xfed0000000000000UL) { | |
832 | if (!hpet_force_user) { | |
833 | printk(KERN_WARNING PREFIX "HPET id: %#x " | |
834 | "base: 0xfed0000000000000 is bogus\n " | |
835 | "try hpet=force on the kernel command line to " | |
836 | "fix it up to 0xfed00000.\n", hpet_tbl->id); | |
837 | hpet_address = 0; | |
838 | return 0; | |
839 | } | |
840 | printk(KERN_WARNING PREFIX | |
841 | "HPET id: %#x base: 0xfed0000000000000 fixed up " | |
842 | "to 0xfed00000.\n", hpet_tbl->id); | |
843 | hpet_address >>= 32; | |
844 | } | |
845 | #endif | |
4be44fcd | 846 | printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n", |
2d0c87c3 | 847 | hpet_tbl->id, hpet_address); |
1da177e4 | 848 | |
a1dfd851 AD |
849 | /* |
850 | * Allocate and initialize the HPET firmware resource for adding into | |
851 | * the resource tree during the lateinit timeframe. | |
852 | */ | |
853 | #define HPET_RESOURCE_NAME_SIZE 9 | |
854 | hpet_res = alloc_bootmem(sizeof(*hpet_res) + HPET_RESOURCE_NAME_SIZE); | |
855 | ||
a1dfd851 AD |
856 | hpet_res->name = (void *)&hpet_res[1]; |
857 | hpet_res->flags = IORESOURCE_MEM; | |
858 | snprintf((char *)hpet_res->name, HPET_RESOURCE_NAME_SIZE, "HPET %u", | |
859 | hpet_tbl->sequence); | |
860 | ||
861 | hpet_res->start = hpet_address; | |
862 | hpet_res->end = hpet_address + (1 * 1024) - 1; | |
863 | ||
1da177e4 LT |
864 | return 0; |
865 | } | |
a1dfd851 AD |
866 | |
867 | /* | |
868 | * hpet_insert_resource inserts the HPET resources used into the resource | |
869 | * tree. | |
870 | */ | |
871 | static __init int hpet_insert_resource(void) | |
872 | { | |
873 | if (!hpet_res) | |
874 | return 1; | |
875 | ||
876 | return insert_resource(&iomem_resource, hpet_res); | |
877 | } | |
878 | ||
879 | late_initcall(hpet_insert_resource); | |
880 | ||
1da177e4 LT |
881 | #else |
882 | #define acpi_parse_hpet NULL | |
883 | #endif | |
884 | ||
5f3b1a8b | 885 | static int __init acpi_parse_fadt(struct acpi_table_header *table) |
1da177e4 | 886 | { |
90660ec3 | 887 | |
1da177e4 LT |
888 | #ifdef CONFIG_X86_PM_TIMER |
889 | /* detect the location of the ACPI PM Timer */ | |
5f3b1a8b | 890 | if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID) { |
1da177e4 | 891 | /* FADT rev. 2 */ |
5f3b1a8b | 892 | if (acpi_gbl_FADT.xpm_timer_block.space_id != |
4be44fcd | 893 | ACPI_ADR_SPACE_SYSTEM_IO) |
1da177e4 LT |
894 | return 0; |
895 | ||
5f3b1a8b | 896 | pmtmr_ioport = acpi_gbl_FADT.xpm_timer_block.address; |
e6e87b4b DSL |
897 | /* |
898 | * "X" fields are optional extensions to the original V1.0 | |
899 | * fields, so we must selectively expand V1.0 fields if the | |
900 | * corresponding X field is zero. | |
901 | */ | |
902 | if (!pmtmr_ioport) | |
5f3b1a8b | 903 | pmtmr_ioport = acpi_gbl_FADT.pm_timer_block; |
1da177e4 LT |
904 | } else { |
905 | /* FADT rev. 1 */ | |
5f3b1a8b | 906 | pmtmr_ioport = acpi_gbl_FADT.pm_timer_block; |
1da177e4 LT |
907 | } |
908 | if (pmtmr_ioport) | |
4be44fcd LB |
909 | printk(KERN_INFO PREFIX "PM-Timer IO Port: %#x\n", |
910 | pmtmr_ioport); | |
1da177e4 LT |
911 | #endif |
912 | return 0; | |
913 | } | |
914 | ||
1da177e4 LT |
915 | #ifdef CONFIG_X86_LOCAL_APIC |
916 | /* | |
917 | * Parse LAPIC entries in MADT | |
918 | * returns 0 on success, < 0 on error | |
919 | */ | |
31d2092e | 920 | |
cbf9bd60 YL |
921 | static int __init early_acpi_parse_madt_lapic_addr_ovr(void) |
922 | { | |
923 | int count; | |
924 | ||
925 | if (!cpu_has_apic) | |
926 | return -ENODEV; | |
927 | ||
928 | /* | |
929 | * Note that the LAPIC address is obtained from the MADT (32-bit value) | |
930 | * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value). | |
931 | */ | |
932 | ||
e819813f JL |
933 | count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE, |
934 | acpi_parse_lapic_addr_ovr, 0); | |
cbf9bd60 YL |
935 | if (count < 0) { |
936 | printk(KERN_ERR PREFIX | |
937 | "Error parsing LAPIC address override entry\n"); | |
938 | return count; | |
939 | } | |
940 | ||
c0104d38 | 941 | register_lapic_address(acpi_lapic_addr); |
cbf9bd60 YL |
942 | |
943 | return count; | |
944 | } | |
945 | ||
4be44fcd | 946 | static int __init acpi_parse_madt_lapic_entries(void) |
1da177e4 LT |
947 | { |
948 | int count; | |
7237d3de | 949 | int x2count = 0; |
1da177e4 | 950 | |
0fcd2709 AK |
951 | if (!cpu_has_apic) |
952 | return -ENODEV; | |
953 | ||
5f3b1a8b | 954 | /* |
1da177e4 LT |
955 | * Note that the LAPIC address is obtained from the MADT (32-bit value) |
956 | * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value). | |
957 | */ | |
958 | ||
e819813f JL |
959 | count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE, |
960 | acpi_parse_lapic_addr_ovr, 0); | |
1da177e4 | 961 | if (count < 0) { |
4be44fcd LB |
962 | printk(KERN_ERR PREFIX |
963 | "Error parsing LAPIC address override entry\n"); | |
1da177e4 LT |
964 | return count; |
965 | } | |
966 | ||
c0104d38 | 967 | register_lapic_address(acpi_lapic_addr); |
1da177e4 | 968 | |
ac049c1d | 969 | count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_SAPIC, |
cb2ded37 | 970 | acpi_parse_sapic, MAX_LOCAL_APIC); |
ac049c1d | 971 | |
7237d3de SS |
972 | if (!count) { |
973 | x2count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC, | |
cb2ded37 | 974 | acpi_parse_x2apic, MAX_LOCAL_APIC); |
ac049c1d | 975 | count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC, |
cb2ded37 | 976 | acpi_parse_lapic, MAX_LOCAL_APIC); |
7237d3de SS |
977 | } |
978 | if (!count && !x2count) { | |
1da177e4 LT |
979 | printk(KERN_ERR PREFIX "No LAPIC entries present\n"); |
980 | /* TBD: Cleanup to allow fallback to MPS */ | |
981 | return -ENODEV; | |
7237d3de | 982 | } else if (count < 0 || x2count < 0) { |
1da177e4 LT |
983 | printk(KERN_ERR PREFIX "Error parsing LAPIC entry\n"); |
984 | /* TBD: Cleanup to allow fallback to MPS */ | |
985 | return count; | |
986 | } | |
987 | ||
e819813f JL |
988 | x2count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC_NMI, |
989 | acpi_parse_x2apic_nmi, 0); | |
990 | count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI, | |
991 | acpi_parse_lapic_nmi, 0); | |
7237d3de | 992 | if (count < 0 || x2count < 0) { |
1da177e4 LT |
993 | printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n"); |
994 | /* TBD: Cleanup to allow fallback to MPS */ | |
995 | return count; | |
996 | } | |
997 | return 0; | |
998 | } | |
4be44fcd | 999 | #endif /* CONFIG_X86_LOCAL_APIC */ |
1da177e4 | 1000 | |
8466361a | 1001 | #ifdef CONFIG_X86_IO_APIC |
a491cc90 | 1002 | static void __init mp_config_acpi_legacy_irqs(void) |
11113f84 | 1003 | { |
6df8809b | 1004 | int i; |
c2c21745 | 1005 | struct mpc_intsrc mp_irq; |
11113f84 | 1006 | |
bb8187d3 | 1007 | #ifdef CONFIG_EISA |
11113f84 AS |
1008 | /* |
1009 | * Fabricate the legacy ISA bus (bus #31). | |
1010 | */ | |
1011 | mp_bus_id_to_type[MP_ISA_BUS] = MP_BUS_ISA; | |
1012 | #endif | |
1013 | set_bit(MP_ISA_BUS, mp_bus_not_pci); | |
cfc1b9a6 | 1014 | pr_debug("Bus #%d is ISA\n", MP_ISA_BUS); |
11113f84 | 1015 | |
11113f84 AS |
1016 | /* |
1017 | * Use the default configuration for the IRQs 0-15. Unless | |
1018 | * overridden by (MADT) interrupt source override entries. | |
1019 | */ | |
95d76acc | 1020 | for (i = 0; i < nr_legacy_irqs(); i++) { |
0fd52670 EB |
1021 | int ioapic, pin; |
1022 | unsigned int dstapic; | |
11113f84 | 1023 | int idx; |
0fd52670 EB |
1024 | u32 gsi; |
1025 | ||
1026 | /* Locate the gsi that irq i maps to. */ | |
1027 | if (acpi_isa_irq_to_gsi(i, &gsi)) | |
1028 | continue; | |
1029 | ||
1030 | /* | |
1031 | * Locate the IOAPIC that manages the ISA IRQ. | |
1032 | */ | |
1033 | ioapic = mp_find_ioapic(gsi); | |
1034 | if (ioapic < 0) | |
1035 | continue; | |
1036 | pin = mp_find_ioapic_pin(ioapic, gsi); | |
d5371430 | 1037 | dstapic = mpc_ioapic_id(ioapic); |
11113f84 AS |
1038 | |
1039 | for (idx = 0; idx < mp_irq_entries; idx++) { | |
c2c21745 | 1040 | struct mpc_intsrc *irq = mp_irqs + idx; |
11113f84 AS |
1041 | |
1042 | /* Do we already have a mapping for this ISA IRQ? */ | |
c2c21745 | 1043 | if (irq->srcbus == MP_ISA_BUS && irq->srcbusirq == i) |
11113f84 AS |
1044 | break; |
1045 | ||
1046 | /* Do we already have a mapping for this IOAPIC pin */ | |
0fd52670 | 1047 | if (irq->dstapic == dstapic && irq->dstirq == pin) |
11113f84 AS |
1048 | break; |
1049 | } | |
1050 | ||
1051 | if (idx != mp_irq_entries) { | |
1052 | printk(KERN_DEBUG "ACPI: IRQ%d used by override.\n", i); | |
1053 | continue; /* IRQ already used */ | |
1054 | } | |
1055 | ||
c2c21745 JSR |
1056 | mp_irq.type = MP_INTSRC; |
1057 | mp_irq.irqflag = 0; /* Conforming */ | |
1058 | mp_irq.srcbus = MP_ISA_BUS; | |
1059 | mp_irq.dstapic = dstapic; | |
1060 | mp_irq.irqtype = mp_INT; | |
1061 | mp_irq.srcbusirq = i; /* Identity mapped */ | |
0fd52670 | 1062 | mp_irq.dstirq = pin; |
11113f84 | 1063 | |
2d8009ba | 1064 | mp_save_irq(&mp_irq); |
11113f84 AS |
1065 | } |
1066 | } | |
1067 | ||
1da177e4 LT |
1068 | /* |
1069 | * Parse IOAPIC related entries in MADT | |
1070 | * returns 0 on success, < 0 on error | |
1071 | */ | |
4be44fcd | 1072 | static int __init acpi_parse_madt_ioapic_entries(void) |
1da177e4 LT |
1073 | { |
1074 | int count; | |
1075 | ||
1076 | /* | |
1077 | * ACPI interpreter is required to complete interrupt setup, | |
1078 | * so if it is off, don't enumerate the io-apics with ACPI. | |
1079 | * If MPS is present, it will handle them, | |
1080 | * otherwise the system will stay in PIC mode | |
1081 | */ | |
6b2b171a | 1082 | if (acpi_disabled || acpi_noirq) |
1da177e4 | 1083 | return -ENODEV; |
1da177e4 | 1084 | |
5f3b1a8b | 1085 | if (!cpu_has_apic) |
d3b6a349 AK |
1086 | return -ENODEV; |
1087 | ||
1da177e4 | 1088 | /* |
4be44fcd | 1089 | * if "noapic" boot option, don't look for IO-APICs |
1da177e4 LT |
1090 | */ |
1091 | if (skip_ioapic_setup) { | |
1092 | printk(KERN_INFO PREFIX "Skipping IOAPIC probe " | |
4be44fcd | 1093 | "due to 'noapic' option.\n"); |
1da177e4 LT |
1094 | return -ENODEV; |
1095 | } | |
1096 | ||
e819813f JL |
1097 | count = acpi_table_parse_madt(ACPI_MADT_TYPE_IO_APIC, acpi_parse_ioapic, |
1098 | MAX_IO_APICS); | |
1da177e4 LT |
1099 | if (!count) { |
1100 | printk(KERN_ERR PREFIX "No IOAPIC entries present\n"); | |
1101 | return -ENODEV; | |
4be44fcd | 1102 | } else if (count < 0) { |
1da177e4 LT |
1103 | printk(KERN_ERR PREFIX "Error parsing IOAPIC entry\n"); |
1104 | return count; | |
1105 | } | |
1106 | ||
e819813f JL |
1107 | count = acpi_table_parse_madt(ACPI_MADT_TYPE_INTERRUPT_OVERRIDE, |
1108 | acpi_parse_int_src_ovr, nr_irqs); | |
1da177e4 | 1109 | if (count < 0) { |
4be44fcd LB |
1110 | printk(KERN_ERR PREFIX |
1111 | "Error parsing interrupt source overrides entry\n"); | |
1da177e4 LT |
1112 | /* TBD: Cleanup to allow fallback to MPS */ |
1113 | return count; | |
1114 | } | |
1115 | ||
1116 | /* | |
1117 | * If BIOS did not supply an INT_SRC_OVR for the SCI | |
1118 | * pretend we got one so we can set the SCI flags. | |
1119 | */ | |
1120 | if (!acpi_sci_override_gsi) | |
9d2062b8 EB |
1121 | acpi_sci_ioapic_setup(acpi_gbl_FADT.sci_interrupt, 0, 0, |
1122 | acpi_gbl_FADT.sci_interrupt); | |
1da177e4 | 1123 | |
af901ca1 | 1124 | /* Fill in identity legacy mappings where no override */ |
1da177e4 LT |
1125 | mp_config_acpi_legacy_irqs(); |
1126 | ||
e819813f JL |
1127 | count = acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE, |
1128 | acpi_parse_nmi_src, nr_irqs); | |
1da177e4 LT |
1129 | if (count < 0) { |
1130 | printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n"); | |
1131 | /* TBD: Cleanup to allow fallback to MPS */ | |
1132 | return count; | |
1133 | } | |
1134 | ||
1135 | return 0; | |
1136 | } | |
1137 | #else | |
1138 | static inline int acpi_parse_madt_ioapic_entries(void) | |
1139 | { | |
1140 | return -1; | |
1141 | } | |
8466361a | 1142 | #endif /* !CONFIG_X86_IO_APIC */ |
1da177e4 | 1143 | |
cbf9bd60 YL |
1144 | static void __init early_acpi_process_madt(void) |
1145 | { | |
1146 | #ifdef CONFIG_X86_LOCAL_APIC | |
1147 | int error; | |
1148 | ||
1149 | if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) { | |
1150 | ||
1151 | /* | |
1152 | * Parse MADT LAPIC entries | |
1153 | */ | |
1154 | error = early_acpi_parse_madt_lapic_addr_ovr(); | |
1155 | if (!error) { | |
1156 | acpi_lapic = 1; | |
1157 | smp_found_config = 1; | |
1158 | } | |
1159 | if (error == -EINVAL) { | |
1160 | /* | |
1161 | * Dell Precision Workstation 410, 610 come here. | |
1162 | */ | |
1163 | printk(KERN_ERR PREFIX | |
1164 | "Invalid BIOS MADT, disabling ACPI\n"); | |
1165 | disable_acpi(); | |
1166 | } | |
1167 | } | |
1168 | #endif | |
1169 | } | |
1170 | ||
4be44fcd | 1171 | static void __init acpi_process_madt(void) |
1da177e4 LT |
1172 | { |
1173 | #ifdef CONFIG_X86_LOCAL_APIC | |
7f8f97c3 | 1174 | int error; |
1da177e4 | 1175 | |
7f8f97c3 | 1176 | if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) { |
1da177e4 LT |
1177 | |
1178 | /* | |
1179 | * Parse MADT LAPIC entries | |
1180 | */ | |
1181 | error = acpi_parse_madt_lapic_entries(); | |
1182 | if (!error) { | |
1183 | acpi_lapic = 1; | |
1184 | ||
1185 | /* | |
1186 | * Parse MADT IO-APIC entries | |
1187 | */ | |
1188 | error = acpi_parse_madt_ioapic_entries(); | |
1189 | if (!error) { | |
2f065aef | 1190 | acpi_set_irq_model_ioapic(); |
1da177e4 LT |
1191 | |
1192 | smp_found_config = 1; | |
1da177e4 LT |
1193 | } |
1194 | } | |
1195 | if (error == -EINVAL) { | |
1196 | /* | |
1197 | * Dell Precision Workstation 410, 610 come here. | |
1198 | */ | |
4be44fcd LB |
1199 | printk(KERN_ERR PREFIX |
1200 | "Invalid BIOS MADT, disabling ACPI\n"); | |
1da177e4 LT |
1201 | disable_acpi(); |
1202 | } | |
7b37b5fd LB |
1203 | } else { |
1204 | /* | |
1205 | * ACPI found no MADT, and so ACPI wants UP PIC mode. | |
1206 | * In the event an MPS table was found, forget it. | |
1207 | * Boot with "acpi=off" to use MPS on such a system. | |
1208 | */ | |
1209 | if (smp_found_config) { | |
1210 | printk(KERN_WARNING PREFIX | |
1211 | "No APIC-table, disabling MPS\n"); | |
1212 | smp_found_config = 0; | |
1213 | } | |
1da177e4 | 1214 | } |
69b88afa YL |
1215 | |
1216 | /* | |
1217 | * ACPI supports both logical (e.g. Hyper-Threading) and physical | |
1218 | * processors, where MPS only supports physical. | |
1219 | */ | |
1220 | if (acpi_lapic && acpi_ioapic) | |
1221 | printk(KERN_INFO "Using ACPI (MADT) for SMP configuration " | |
1222 | "information\n"); | |
1223 | else if (acpi_lapic) | |
1224 | printk(KERN_INFO "Using ACPI for processor (LAPIC) " | |
1225 | "configuration information\n"); | |
1da177e4 LT |
1226 | #endif |
1227 | return; | |
1228 | } | |
1229 | ||
1855256c | 1230 | static int __init disable_acpi_irq(const struct dmi_system_id *d) |
aea00143 AP |
1231 | { |
1232 | if (!acpi_force) { | |
1233 | printk(KERN_NOTICE "%s detected: force use of acpi=noirq\n", | |
1234 | d->ident); | |
1235 | acpi_noirq_set(); | |
1236 | } | |
1237 | return 0; | |
1238 | } | |
1239 | ||
1855256c | 1240 | static int __init disable_acpi_pci(const struct dmi_system_id *d) |
aea00143 AP |
1241 | { |
1242 | if (!acpi_force) { | |
1243 | printk(KERN_NOTICE "%s detected: force use of pci=noacpi\n", | |
1244 | d->ident); | |
1245 | acpi_disable_pci(); | |
1246 | } | |
1247 | return 0; | |
1248 | } | |
aea00143 | 1249 | |
1855256c | 1250 | static int __init dmi_disable_acpi(const struct dmi_system_id *d) |
aea00143 AP |
1251 | { |
1252 | if (!acpi_force) { | |
4be44fcd | 1253 | printk(KERN_NOTICE "%s detected: acpi off\n", d->ident); |
aea00143 AP |
1254 | disable_acpi(); |
1255 | } else { | |
1256 | printk(KERN_NOTICE | |
1257 | "Warning: DMI blacklist says broken, but acpi forced\n"); | |
1258 | } | |
1259 | return 0; | |
1260 | } | |
1261 | ||
e2079c43 | 1262 | /* |
ae10ccdc | 1263 | * Force ignoring BIOS IRQ0 override |
e2079c43 RW |
1264 | */ |
1265 | static int __init dmi_ignore_irq0_timer_override(const struct dmi_system_id *d) | |
1266 | { | |
8d89adf4 | 1267 | if (!acpi_skip_timer_override) { |
ae10ccdc | 1268 | pr_notice("%s detected: Ignoring BIOS IRQ0 override\n", |
8d89adf4 IM |
1269 | d->ident); |
1270 | acpi_skip_timer_override = 1; | |
1271 | } | |
e2079c43 RW |
1272 | return 0; |
1273 | } | |
1274 | ||
aea00143 AP |
1275 | /* |
1276 | * If your system is blacklisted here, but you find that acpi=force | |
5b4c0b6f | 1277 | * works for you, please contact linux-acpi@vger.kernel.org |
aea00143 AP |
1278 | */ |
1279 | static struct dmi_system_id __initdata acpi_dmi_table[] = { | |
1280 | /* | |
1281 | * Boxes that need ACPI disabled | |
1282 | */ | |
1283 | { | |
4be44fcd LB |
1284 | .callback = dmi_disable_acpi, |
1285 | .ident = "IBM Thinkpad", | |
1286 | .matches = { | |
1287 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), | |
1288 | DMI_MATCH(DMI_BOARD_NAME, "2629H1G"), | |
1289 | }, | |
1290 | }, | |
aea00143 | 1291 | |
aea00143 AP |
1292 | /* |
1293 | * Boxes that need ACPI PCI IRQ routing disabled | |
1294 | */ | |
1295 | { | |
4be44fcd LB |
1296 | .callback = disable_acpi_irq, |
1297 | .ident = "ASUS A7V", | |
1298 | .matches = { | |
1299 | DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC"), | |
1300 | DMI_MATCH(DMI_BOARD_NAME, "<A7V>"), | |
1301 | /* newer BIOS, Revision 1011, does work */ | |
1302 | DMI_MATCH(DMI_BIOS_VERSION, | |
1303 | "ASUS A7V ACPI BIOS Revision 1007"), | |
1304 | }, | |
1305 | }, | |
74586fca LB |
1306 | { |
1307 | /* | |
1308 | * Latest BIOS for IBM 600E (1.16) has bad pcinum | |
1309 | * for LPC bridge, which is needed for the PCI | |
1310 | * interrupt links to work. DSDT fix is in bug 5966. | |
1311 | * 2645, 2646 model numbers are shared with 600/600E/600X | |
1312 | */ | |
1313 | .callback = disable_acpi_irq, | |
1314 | .ident = "IBM Thinkpad 600 Series 2645", | |
1315 | .matches = { | |
1316 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), | |
1317 | DMI_MATCH(DMI_BOARD_NAME, "2645"), | |
1318 | }, | |
1319 | }, | |
1320 | { | |
1321 | .callback = disable_acpi_irq, | |
1322 | .ident = "IBM Thinkpad 600 Series 2646", | |
1323 | .matches = { | |
1324 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), | |
1325 | DMI_MATCH(DMI_BOARD_NAME, "2646"), | |
1326 | }, | |
1327 | }, | |
aea00143 AP |
1328 | /* |
1329 | * Boxes that need ACPI PCI IRQ routing and PCI scan disabled | |
1330 | */ | |
4be44fcd LB |
1331 | { /* _BBN 0 bug */ |
1332 | .callback = disable_acpi_pci, | |
1333 | .ident = "ASUS PR-DLS", | |
1334 | .matches = { | |
1335 | DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), | |
1336 | DMI_MATCH(DMI_BOARD_NAME, "PR-DLS"), | |
1337 | DMI_MATCH(DMI_BIOS_VERSION, | |
1338 | "ASUS PR-DLS ACPI BIOS Revision 1010"), | |
1339 | DMI_MATCH(DMI_BIOS_DATE, "03/21/2003") | |
1340 | }, | |
1341 | }, | |
aea00143 | 1342 | { |
4be44fcd LB |
1343 | .callback = disable_acpi_pci, |
1344 | .ident = "Acer TravelMate 36x Laptop", | |
1345 | .matches = { | |
1346 | DMI_MATCH(DMI_SYS_VENDOR, "Acer"), | |
1347 | DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 360"), | |
1348 | }, | |
1349 | }, | |
35af2821 AH |
1350 | {} |
1351 | }; | |
1352 | ||
1353 | /* second table for DMI checks that should run after early-quirks */ | |
1354 | static struct dmi_system_id __initdata acpi_dmi_table_late[] = { | |
e2079c43 RW |
1355 | /* |
1356 | * HP laptops which use a DSDT reporting as HP/SB400/10000, | |
1357 | * which includes some code which overrides all temperature | |
1358 | * trip points to 16C if the INTIN2 input of the I/O APIC | |
1359 | * is enabled. This input is incorrectly designated the | |
1360 | * ISA IRQ 0 via an interrupt source override even though | |
1361 | * it is wired to the output of the master 8259A and INTIN0 | |
ae10ccdc | 1362 | * is not connected at all. Force ignoring BIOS IRQ0 |
e2079c43 RW |
1363 | * override in that cases. |
1364 | */ | |
e84956f9 RW |
1365 | { |
1366 | .callback = dmi_ignore_irq0_timer_override, | |
1367 | .ident = "HP nx6115 laptop", | |
1368 | .matches = { | |
1369 | DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), | |
1370 | DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6115"), | |
1371 | }, | |
1372 | }, | |
e2079c43 RW |
1373 | { |
1374 | .callback = dmi_ignore_irq0_timer_override, | |
1375 | .ident = "HP NX6125 laptop", | |
1376 | .matches = { | |
1377 | DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), | |
1378 | DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6125"), | |
1379 | }, | |
1380 | }, | |
1381 | { | |
1382 | .callback = dmi_ignore_irq0_timer_override, | |
1383 | .ident = "HP NX6325 laptop", | |
1384 | .matches = { | |
1385 | DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), | |
1386 | DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6325"), | |
1387 | }, | |
1388 | }, | |
e84956f9 RW |
1389 | { |
1390 | .callback = dmi_ignore_irq0_timer_override, | |
1391 | .ident = "HP 6715b laptop", | |
1392 | .matches = { | |
1393 | DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), | |
1394 | DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq 6715b"), | |
1395 | }, | |
1396 | }, | |
f6b54f08 FT |
1397 | { |
1398 | .callback = dmi_ignore_irq0_timer_override, | |
1399 | .ident = "FUJITSU SIEMENS", | |
1400 | .matches = { | |
1401 | DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), | |
1402 | DMI_MATCH(DMI_PRODUCT_NAME, "AMILO PRO V2030"), | |
1403 | }, | |
1404 | }, | |
4be44fcd | 1405 | {} |
aea00143 AP |
1406 | }; |
1407 | ||
1da177e4 LT |
1408 | /* |
1409 | * acpi_boot_table_init() and acpi_boot_init() | |
1410 | * called from setup_arch(), always. | |
1411 | * 1. checksums all tables | |
1412 | * 2. enumerates lapics | |
1413 | * 3. enumerates io-apics | |
1414 | * | |
1415 | * acpi_table_init() is separate to allow reading SRAT without | |
1416 | * other side effects. | |
1417 | * | |
1418 | * side effects of acpi_boot_init: | |
1419 | * acpi_lapic = 1 if LAPIC found | |
1420 | * acpi_ioapic = 1 if IOAPIC found | |
1421 | * if (acpi_lapic && acpi_ioapic) smp_found_config = 1; | |
1422 | * if acpi_blacklisted() acpi_disabled = 1; | |
1423 | * acpi_irq_model=... | |
1424 | * ... | |
1da177e4 LT |
1425 | */ |
1426 | ||
8558e394 | 1427 | void __init acpi_boot_table_init(void) |
1da177e4 | 1428 | { |
aea00143 | 1429 | dmi_check_system(acpi_dmi_table); |
aea00143 | 1430 | |
1da177e4 LT |
1431 | /* |
1432 | * If acpi_disabled, bail out | |
1da177e4 | 1433 | */ |
68ca4069 | 1434 | if (acpi_disabled) |
8558e394 | 1435 | return; |
1da177e4 | 1436 | |
5f3b1a8b | 1437 | /* |
1da177e4 LT |
1438 | * Initialize the ACPI boot-time table parser. |
1439 | */ | |
8558e394 | 1440 | if (acpi_table_init()) { |
1da177e4 | 1441 | disable_acpi(); |
8558e394 | 1442 | return; |
1da177e4 | 1443 | } |
1da177e4 | 1444 | |
5f3b1a8b | 1445 | acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf); |
1da177e4 LT |
1446 | |
1447 | /* | |
1448 | * blacklist may disable ACPI entirely | |
1449 | */ | |
8558e394 | 1450 | if (acpi_blacklisted()) { |
1da177e4 LT |
1451 | if (acpi_force) { |
1452 | printk(KERN_WARNING PREFIX "acpi=force override\n"); | |
1453 | } else { | |
1454 | printk(KERN_WARNING PREFIX "Disabling ACPI support\n"); | |
1455 | disable_acpi(); | |
8558e394 | 1456 | return; |
1da177e4 LT |
1457 | } |
1458 | } | |
cbf9bd60 YL |
1459 | } |
1460 | ||
1461 | int __init early_acpi_boot_init(void) | |
1462 | { | |
1463 | /* | |
1464 | * If acpi_disabled, bail out | |
cbf9bd60 | 1465 | */ |
68ca4069 | 1466 | if (acpi_disabled) |
cbf9bd60 YL |
1467 | return 1; |
1468 | ||
1469 | /* | |
1470 | * Process the Multiple APIC Description Table (MADT), if present | |
1471 | */ | |
1472 | early_acpi_process_madt(); | |
1da177e4 LT |
1473 | |
1474 | return 0; | |
1475 | } | |
1476 | ||
1da177e4 LT |
1477 | int __init acpi_boot_init(void) |
1478 | { | |
35af2821 AH |
1479 | /* those are executed after early-quirks are executed */ |
1480 | dmi_check_system(acpi_dmi_table_late); | |
1481 | ||
1da177e4 LT |
1482 | /* |
1483 | * If acpi_disabled, bail out | |
1da177e4 | 1484 | */ |
68ca4069 | 1485 | if (acpi_disabled) |
4be44fcd | 1486 | return 1; |
1da177e4 | 1487 | |
5f3b1a8b | 1488 | acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf); |
1da177e4 LT |
1489 | |
1490 | /* | |
1491 | * set sci_int and PM timer address | |
1492 | */ | |
ceb6c468 | 1493 | acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt); |
1da177e4 LT |
1494 | |
1495 | /* | |
1496 | * Process the Multiple APIC Description Table (MADT), if present | |
1497 | */ | |
1498 | acpi_process_madt(); | |
1499 | ||
5f3b1a8b | 1500 | acpi_table_parse(ACPI_SIG_HPET, acpi_parse_hpet); |
1da177e4 | 1501 | |
b72d0db9 TG |
1502 | if (!acpi_noirq) |
1503 | x86_init.pci.init = pci_acpi_init; | |
1504 | ||
1da177e4 LT |
1505 | return 0; |
1506 | } | |
1a3f239d RR |
1507 | |
1508 | static int __init parse_acpi(char *arg) | |
1509 | { | |
1510 | if (!arg) | |
1511 | return -EINVAL; | |
1512 | ||
1513 | /* "acpi=off" disables both ACPI table parsing and interpreter */ | |
1514 | if (strcmp(arg, "off") == 0) { | |
1515 | disable_acpi(); | |
1516 | } | |
1517 | /* acpi=force to over-ride black-list */ | |
1518 | else if (strcmp(arg, "force") == 0) { | |
1519 | acpi_force = 1; | |
1a3f239d RR |
1520 | acpi_disabled = 0; |
1521 | } | |
1522 | /* acpi=strict disables out-of-spec workarounds */ | |
1523 | else if (strcmp(arg, "strict") == 0) { | |
1524 | acpi_strict = 1; | |
1525 | } | |
237889bf ZY |
1526 | /* acpi=rsdt use RSDT instead of XSDT */ |
1527 | else if (strcmp(arg, "rsdt") == 0) { | |
fab46105 | 1528 | acpi_gbl_do_not_use_xsdt = TRUE; |
237889bf | 1529 | } |
1a3f239d RR |
1530 | /* "acpi=noirq" disables ACPI interrupt routing */ |
1531 | else if (strcmp(arg, "noirq") == 0) { | |
1532 | acpi_noirq_set(); | |
aa2110cb LM |
1533 | } |
1534 | /* "acpi=copy_dsdt" copys DSDT */ | |
1535 | else if (strcmp(arg, "copy_dsdt") == 0) { | |
1536 | acpi_gbl_copy_dsdt_locally = 1; | |
9ad95879 NR |
1537 | } |
1538 | /* "acpi=nocmcff" disables FF mode for corrected errors */ | |
1539 | else if (strcmp(arg, "nocmcff") == 0) { | |
1540 | acpi_disable_cmcff = 1; | |
1a3f239d RR |
1541 | } else { |
1542 | /* Core will printk when we return error. */ | |
1543 | return -EINVAL; | |
1544 | } | |
1545 | return 0; | |
1546 | } | |
1547 | early_param("acpi", parse_acpi); | |
1548 | ||
1549 | /* FIXME: Using pci= for an ACPI parameter is a travesty. */ | |
1550 | static int __init parse_pci(char *arg) | |
1551 | { | |
1552 | if (arg && strcmp(arg, "noacpi") == 0) | |
1553 | acpi_disable_pci(); | |
1554 | return 0; | |
1555 | } | |
1556 | early_param("pci", parse_pci); | |
1557 | ||
3c999f14 YL |
1558 | int __init acpi_mps_check(void) |
1559 | { | |
1560 | #if defined(CONFIG_X86_LOCAL_APIC) && !defined(CONFIG_X86_MPPARSE) | |
1561 | /* mptable code is not built-in*/ | |
1562 | if (acpi_disabled || acpi_noirq) { | |
1563 | printk(KERN_WARNING "MPS support code is not built-in.\n" | |
1564 | "Using acpi=off or acpi=noirq or pci=noacpi " | |
1565 | "may have problem\n"); | |
1566 | return 1; | |
1567 | } | |
1568 | #endif | |
1569 | return 0; | |
1570 | } | |
1571 | ||
1a3f239d RR |
1572 | #ifdef CONFIG_X86_IO_APIC |
1573 | static int __init parse_acpi_skip_timer_override(char *arg) | |
1574 | { | |
1575 | acpi_skip_timer_override = 1; | |
1576 | return 0; | |
1577 | } | |
1578 | early_param("acpi_skip_timer_override", parse_acpi_skip_timer_override); | |
fa18f477 AK |
1579 | |
1580 | static int __init parse_acpi_use_timer_override(char *arg) | |
1581 | { | |
1582 | acpi_use_timer_override = 1; | |
1583 | return 0; | |
1584 | } | |
1585 | early_param("acpi_use_timer_override", parse_acpi_use_timer_override); | |
1a3f239d RR |
1586 | #endif /* CONFIG_X86_IO_APIC */ |
1587 | ||
1588 | static int __init setup_acpi_sci(char *s) | |
1589 | { | |
1590 | if (!s) | |
1591 | return -EINVAL; | |
1592 | if (!strcmp(s, "edge")) | |
5f3b1a8b AS |
1593 | acpi_sci_flags = ACPI_MADT_TRIGGER_EDGE | |
1594 | (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK); | |
1a3f239d | 1595 | else if (!strcmp(s, "level")) |
5f3b1a8b AS |
1596 | acpi_sci_flags = ACPI_MADT_TRIGGER_LEVEL | |
1597 | (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK); | |
1a3f239d | 1598 | else if (!strcmp(s, "high")) |
5f3b1a8b AS |
1599 | acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_HIGH | |
1600 | (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK); | |
1a3f239d | 1601 | else if (!strcmp(s, "low")) |
5f3b1a8b AS |
1602 | acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_LOW | |
1603 | (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK); | |
1a3f239d RR |
1604 | else |
1605 | return -EINVAL; | |
1606 | return 0; | |
1607 | } | |
1608 | early_param("acpi_sci", setup_acpi_sci); | |
d0a9081b AM |
1609 | |
1610 | int __acpi_acquire_global_lock(unsigned int *lock) | |
1611 | { | |
1612 | unsigned int old, new, val; | |
1613 | do { | |
1614 | old = *lock; | |
1615 | new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1)); | |
1616 | val = cmpxchg(lock, old, new); | |
1617 | } while (unlikely (val != old)); | |
1618 | return (new < 3) ? -1 : 0; | |
1619 | } | |
1620 | ||
1621 | int __acpi_release_global_lock(unsigned int *lock) | |
1622 | { | |
1623 | unsigned int old, new, val; | |
1624 | do { | |
1625 | old = *lock; | |
1626 | new = old & ~0x3; | |
1627 | val = cmpxchg(lock, old, new); | |
1628 | } while (unlikely (val != old)); | |
1629 | return old & 0x1; | |
1630 | } | |
8e30524d TR |
1631 | |
1632 | void __init arch_reserve_mem_area(acpi_physical_address addr, size_t size) | |
1633 | { | |
1634 | e820_add_region(addr, size, E820_ACPI); | |
1635 | update_e820(); | |
1636 | } |