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1da177e4 LT |
1 | /* |
2 | * boot.c - Architecture-Specific Low-Level ACPI Boot Support | |
3 | * | |
4 | * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com> | |
5 | * Copyright (C) 2001 Jun Nakajima <jun.nakajima@intel.com> | |
6 | * | |
7 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
22 | * | |
23 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
24 | */ | |
25 | ||
26 | #include <linux/init.h> | |
1da177e4 | 27 | #include <linux/acpi.h> |
d66bea57 | 28 | #include <linux/acpi_pmtmr.h> |
1da177e4 | 29 | #include <linux/efi.h> |
73fea175 | 30 | #include <linux/cpumask.h> |
1da177e4 | 31 | #include <linux/module.h> |
aea00143 | 32 | #include <linux/dmi.h> |
b33fa1f3 | 33 | #include <linux/irq.h> |
5a0e3ad6 | 34 | #include <linux/slab.h> |
f0f4c343 AD |
35 | #include <linux/bootmem.h> |
36 | #include <linux/ioport.h> | |
a31f8205 | 37 | #include <linux/pci.h> |
1da177e4 | 38 | |
b72d0db9 | 39 | #include <asm/pci_x86.h> |
1da177e4 LT |
40 | #include <asm/pgtable.h> |
41 | #include <asm/io_apic.h> | |
42 | #include <asm/apic.h> | |
43 | #include <asm/io.h> | |
1da177e4 | 44 | #include <asm/mpspec.h> |
dfac2189 | 45 | #include <asm/smp.h> |
1da177e4 | 46 | |
e8924acb | 47 | static int __initdata acpi_force = 0; |
237889bf | 48 | u32 acpi_rsdt_forced; |
c636f753 | 49 | int acpi_disabled; |
df3bb57d AK |
50 | EXPORT_SYMBOL(acpi_disabled); |
51 | ||
1da177e4 | 52 | #ifdef CONFIG_X86_64 |
1dcdd3d1 | 53 | # include <asm/proto.h> |
0271f910 | 54 | # include <asm/numa_64.h> |
4be44fcd | 55 | #endif /* X86 */ |
1da177e4 LT |
56 | |
57 | #define BAD_MADT_ENTRY(entry, end) ( \ | |
58 | (!entry) || (unsigned long)entry + sizeof(*entry) > end || \ | |
5f3b1a8b | 59 | ((struct acpi_subtable_header *)entry)->length < sizeof(*entry)) |
1da177e4 LT |
60 | |
61 | #define PREFIX "ACPI: " | |
62 | ||
90d53909 | 63 | int acpi_noirq; /* skip ACPI IRQ initialization */ |
6e4be1ff YL |
64 | int acpi_pci_disabled; /* skip ACPI PCI scan and IRQ initialization */ |
65 | EXPORT_SYMBOL(acpi_pci_disabled); | |
1da177e4 LT |
66 | int acpi_ht __initdata = 1; /* enable HT */ |
67 | ||
68 | int acpi_lapic; | |
69 | int acpi_ioapic; | |
70 | int acpi_strict; | |
1da177e4 | 71 | |
5f3b1a8b | 72 | u8 acpi_sci_flags __initdata; |
1da177e4 LT |
73 | int acpi_sci_override_gsi __initdata; |
74 | int acpi_skip_timer_override __initdata; | |
fa18f477 | 75 | int acpi_use_timer_override __initdata; |
1da177e4 LT |
76 | |
77 | #ifdef CONFIG_X86_LOCAL_APIC | |
78 | static u64 acpi_lapic_addr __initdata = APIC_DEFAULT_PHYS_BASE; | |
79 | #endif | |
80 | ||
81 | #ifndef __HAVE_ARCH_CMPXCHG | |
82 | #warning ACPI uses CMPXCHG, i486 and later hardware | |
83 | #endif | |
84 | ||
1da177e4 LT |
85 | /* -------------------------------------------------------------------------- |
86 | Boot-time Configuration | |
87 | -------------------------------------------------------------------------- */ | |
88 | ||
89 | /* | |
90 | * The default interrupt routing model is PIC (8259). This gets | |
27b46d76 | 91 | * overridden if IOAPICs are enumerated (below). |
1da177e4 | 92 | */ |
4be44fcd | 93 | enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_PIC; |
1da177e4 | 94 | |
1da177e4 LT |
95 | |
96 | /* | |
97 | * Temporarily use the virtual area starting from FIX_IO_APIC_BASE_END, | |
98 | * to map the target physical address. The problem is that set_fixmap() | |
99 | * provides a single page, and it is possible that the page is not | |
100 | * sufficient. | |
101 | * By using this area, we can map up to MAX_IO_APICS pages temporarily, | |
102 | * i.e. until the next __va_range() call. | |
103 | * | |
104 | * Important Safety Note: The fixed I/O APIC page numbers are *subtracted* | |
105 | * from the fixed base. That's why we start at FIX_IO_APIC_BASE_END and | |
106 | * count idx down while incrementing the phys address. | |
107 | */ | |
2fdf0741 | 108 | char *__init __acpi_map_table(unsigned long phys, unsigned long size) |
1da177e4 | 109 | { |
1da177e4 | 110 | |
f34fa82b YL |
111 | if (!phys || !size) |
112 | return NULL; | |
113 | ||
7d97277b YL |
114 | return early_ioremap(phys, size); |
115 | } | |
116 | void __init __acpi_unmap_table(char *map, unsigned long size) | |
117 | { | |
118 | if (!map || !size) | |
119 | return; | |
1da177e4 | 120 | |
7d97277b | 121 | early_iounmap(map, size); |
1da177e4 | 122 | } |
1da177e4 | 123 | |
1da177e4 | 124 | #ifdef CONFIG_X86_LOCAL_APIC |
15a58ed1 | 125 | static int __init acpi_parse_madt(struct acpi_table_header *table) |
1da177e4 | 126 | { |
4be44fcd | 127 | struct acpi_table_madt *madt = NULL; |
1da177e4 | 128 | |
15a58ed1 | 129 | if (!cpu_has_apic) |
1da177e4 LT |
130 | return -EINVAL; |
131 | ||
15a58ed1 | 132 | madt = (struct acpi_table_madt *)table; |
1da177e4 LT |
133 | if (!madt) { |
134 | printk(KERN_WARNING PREFIX "Unable to map MADT\n"); | |
135 | return -ENODEV; | |
136 | } | |
137 | ||
ad363f80 AS |
138 | if (madt->address) { |
139 | acpi_lapic_addr = (u64) madt->address; | |
1da177e4 LT |
140 | |
141 | printk(KERN_DEBUG PREFIX "Local APIC address 0x%08x\n", | |
ad363f80 | 142 | madt->address); |
1da177e4 LT |
143 | } |
144 | ||
306db03b IM |
145 | default_acpi_madt_oem_check(madt->header.oem_id, |
146 | madt->header.oem_table_id); | |
4be44fcd | 147 | |
1da177e4 LT |
148 | return 0; |
149 | } | |
150 | ||
dfac2189 AS |
151 | static void __cpuinit acpi_register_lapic(int id, u8 enabled) |
152 | { | |
fb3bbd6a YL |
153 | unsigned int ver = 0; |
154 | ||
dfac2189 AS |
155 | if (!enabled) { |
156 | ++disabled_cpus; | |
157 | return; | |
158 | } | |
159 | ||
fb3bbd6a YL |
160 | if (boot_cpu_physical_apicid != -1U) |
161 | ver = apic_version[boot_cpu_physical_apicid]; | |
fb3bbd6a YL |
162 | |
163 | generic_processor_info(id, ver); | |
dfac2189 AS |
164 | } |
165 | ||
7237d3de SS |
166 | static int __init |
167 | acpi_parse_x2apic(struct acpi_subtable_header *header, const unsigned long end) | |
168 | { | |
169 | struct acpi_madt_local_x2apic *processor = NULL; | |
170 | ||
171 | processor = (struct acpi_madt_local_x2apic *)header; | |
172 | ||
173 | if (BAD_MADT_ENTRY(processor, end)) | |
174 | return -EINVAL; | |
175 | ||
176 | acpi_table_print_madt_entry(header); | |
177 | ||
178 | #ifdef CONFIG_X86_X2APIC | |
179 | /* | |
180 | * We need to register disabled CPU as well to permit | |
181 | * counting disabled CPUs. This allows us to size | |
182 | * cpus_possible_map more accurately, to permit | |
183 | * to not preallocating memory for all NR_CPUS | |
184 | * when we use CPU hotplug. | |
185 | */ | |
186 | acpi_register_lapic(processor->local_apic_id, /* APIC ID */ | |
187 | processor->lapic_flags & ACPI_MADT_ENABLED); | |
188 | #else | |
189 | printk(KERN_WARNING PREFIX "x2apic entry ignored\n"); | |
190 | #endif | |
191 | ||
192 | return 0; | |
193 | } | |
194 | ||
1da177e4 | 195 | static int __init |
5f3b1a8b | 196 | acpi_parse_lapic(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 197 | { |
5f3b1a8b | 198 | struct acpi_madt_local_apic *processor = NULL; |
1da177e4 | 199 | |
5f3b1a8b | 200 | processor = (struct acpi_madt_local_apic *)header; |
1da177e4 LT |
201 | |
202 | if (BAD_MADT_ENTRY(processor, end)) | |
203 | return -EINVAL; | |
204 | ||
205 | acpi_table_print_madt_entry(header); | |
206 | ||
7f66ae48 AR |
207 | /* |
208 | * We need to register disabled CPU as well to permit | |
209 | * counting disabled CPUs. This allows us to size | |
210 | * cpus_possible_map more accurately, to permit | |
211 | * to not preallocating memory for all NR_CPUS | |
212 | * when we use CPU hotplug. | |
213 | */ | |
dfac2189 AS |
214 | acpi_register_lapic(processor->id, /* APIC ID */ |
215 | processor->lapic_flags & ACPI_MADT_ENABLED); | |
1da177e4 LT |
216 | |
217 | return 0; | |
218 | } | |
219 | ||
ac049c1d JS |
220 | static int __init |
221 | acpi_parse_sapic(struct acpi_subtable_header *header, const unsigned long end) | |
222 | { | |
223 | struct acpi_madt_local_sapic *processor = NULL; | |
224 | ||
225 | processor = (struct acpi_madt_local_sapic *)header; | |
226 | ||
227 | if (BAD_MADT_ENTRY(processor, end)) | |
228 | return -EINVAL; | |
229 | ||
230 | acpi_table_print_madt_entry(header); | |
231 | ||
dfac2189 AS |
232 | acpi_register_lapic((processor->id << 8) | processor->eid,/* APIC ID */ |
233 | processor->lapic_flags & ACPI_MADT_ENABLED); | |
ac049c1d JS |
234 | |
235 | return 0; | |
236 | } | |
237 | ||
1da177e4 | 238 | static int __init |
5f3b1a8b | 239 | acpi_parse_lapic_addr_ovr(struct acpi_subtable_header * header, |
4be44fcd | 240 | const unsigned long end) |
1da177e4 | 241 | { |
5f3b1a8b | 242 | struct acpi_madt_local_apic_override *lapic_addr_ovr = NULL; |
1da177e4 | 243 | |
5f3b1a8b | 244 | lapic_addr_ovr = (struct acpi_madt_local_apic_override *)header; |
1da177e4 LT |
245 | |
246 | if (BAD_MADT_ENTRY(lapic_addr_ovr, end)) | |
247 | return -EINVAL; | |
248 | ||
249 | acpi_lapic_addr = lapic_addr_ovr->address; | |
250 | ||
251 | return 0; | |
252 | } | |
253 | ||
7237d3de SS |
254 | static int __init |
255 | acpi_parse_x2apic_nmi(struct acpi_subtable_header *header, | |
256 | const unsigned long end) | |
257 | { | |
258 | struct acpi_madt_local_x2apic_nmi *x2apic_nmi = NULL; | |
259 | ||
260 | x2apic_nmi = (struct acpi_madt_local_x2apic_nmi *)header; | |
261 | ||
262 | if (BAD_MADT_ENTRY(x2apic_nmi, end)) | |
263 | return -EINVAL; | |
264 | ||
265 | acpi_table_print_madt_entry(header); | |
266 | ||
267 | if (x2apic_nmi->lint != 1) | |
268 | printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n"); | |
269 | ||
270 | return 0; | |
271 | } | |
272 | ||
1da177e4 | 273 | static int __init |
5f3b1a8b | 274 | acpi_parse_lapic_nmi(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 275 | { |
5f3b1a8b | 276 | struct acpi_madt_local_apic_nmi *lapic_nmi = NULL; |
1da177e4 | 277 | |
5f3b1a8b | 278 | lapic_nmi = (struct acpi_madt_local_apic_nmi *)header; |
1da177e4 LT |
279 | |
280 | if (BAD_MADT_ENTRY(lapic_nmi, end)) | |
281 | return -EINVAL; | |
282 | ||
283 | acpi_table_print_madt_entry(header); | |
284 | ||
285 | if (lapic_nmi->lint != 1) | |
286 | printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n"); | |
287 | ||
288 | return 0; | |
289 | } | |
290 | ||
4be44fcd | 291 | #endif /*CONFIG_X86_LOCAL_APIC */ |
1da177e4 | 292 | |
8466361a | 293 | #ifdef CONFIG_X86_IO_APIC |
1da177e4 LT |
294 | |
295 | static int __init | |
5f3b1a8b | 296 | acpi_parse_ioapic(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 297 | { |
5f3b1a8b | 298 | struct acpi_madt_io_apic *ioapic = NULL; |
1da177e4 | 299 | |
5f3b1a8b | 300 | ioapic = (struct acpi_madt_io_apic *)header; |
1da177e4 LT |
301 | |
302 | if (BAD_MADT_ENTRY(ioapic, end)) | |
303 | return -EINVAL; | |
4be44fcd | 304 | |
1da177e4 LT |
305 | acpi_table_print_madt_entry(header); |
306 | ||
4be44fcd LB |
307 | mp_register_ioapic(ioapic->id, |
308 | ioapic->address, ioapic->global_irq_base); | |
309 | ||
1da177e4 LT |
310 | return 0; |
311 | } | |
312 | ||
313 | /* | |
314 | * Parse Interrupt Source Override for the ACPI SCI | |
315 | */ | |
e82c354b | 316 | static void __init acpi_sci_ioapic_setup(u32 gsi, u16 polarity, u16 trigger) |
1da177e4 LT |
317 | { |
318 | if (trigger == 0) /* compatible SCI trigger is level */ | |
319 | trigger = 3; | |
320 | ||
321 | if (polarity == 0) /* compatible SCI polarity is low */ | |
322 | polarity = 3; | |
323 | ||
324 | /* Command-line over-ride via acpi_sci= */ | |
5f3b1a8b AS |
325 | if (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) |
326 | trigger = (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) >> 2; | |
1da177e4 | 327 | |
5f3b1a8b AS |
328 | if (acpi_sci_flags & ACPI_MADT_POLARITY_MASK) |
329 | polarity = acpi_sci_flags & ACPI_MADT_POLARITY_MASK; | |
1da177e4 LT |
330 | |
331 | /* | |
4be44fcd | 332 | * mp_config_acpi_legacy_irqs() already setup IRQs < 16 |
1da177e4 LT |
333 | * If GSI is < 16, this will update its flags, |
334 | * else it will create a new mp_irqs[] entry. | |
335 | */ | |
7bdd21ce | 336 | mp_override_legacy_irq(gsi, polarity, trigger, gsi); |
1da177e4 LT |
337 | |
338 | /* | |
339 | * stash over-ride to indicate we've been here | |
cee324b1 | 340 | * and for later update of acpi_gbl_FADT |
1da177e4 | 341 | */ |
7bdd21ce | 342 | acpi_sci_override_gsi = gsi; |
1da177e4 LT |
343 | return; |
344 | } | |
345 | ||
346 | static int __init | |
5f3b1a8b | 347 | acpi_parse_int_src_ovr(struct acpi_subtable_header * header, |
4be44fcd | 348 | const unsigned long end) |
1da177e4 | 349 | { |
5f3b1a8b | 350 | struct acpi_madt_interrupt_override *intsrc = NULL; |
1da177e4 | 351 | |
5f3b1a8b | 352 | intsrc = (struct acpi_madt_interrupt_override *)header; |
1da177e4 LT |
353 | |
354 | if (BAD_MADT_ENTRY(intsrc, end)) | |
355 | return -EINVAL; | |
356 | ||
357 | acpi_table_print_madt_entry(header); | |
358 | ||
5f3b1a8b | 359 | if (intsrc->source_irq == acpi_gbl_FADT.sci_interrupt) { |
7bdd21ce | 360 | acpi_sci_ioapic_setup(intsrc->global_irq, |
5f3b1a8b AS |
361 | intsrc->inti_flags & ACPI_MADT_POLARITY_MASK, |
362 | (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2); | |
1da177e4 LT |
363 | return 0; |
364 | } | |
365 | ||
366 | if (acpi_skip_timer_override && | |
5f3b1a8b | 367 | intsrc->source_irq == 0 && intsrc->global_irq == 2) { |
4be44fcd LB |
368 | printk(PREFIX "BIOS IRQ0 pin2 override ignored.\n"); |
369 | return 0; | |
1da177e4 LT |
370 | } |
371 | ||
5f3b1a8b AS |
372 | mp_override_legacy_irq(intsrc->source_irq, |
373 | intsrc->inti_flags & ACPI_MADT_POLARITY_MASK, | |
374 | (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2, | |
375 | intsrc->global_irq); | |
1da177e4 LT |
376 | |
377 | return 0; | |
378 | } | |
379 | ||
1da177e4 | 380 | static int __init |
5f3b1a8b | 381 | acpi_parse_nmi_src(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 382 | { |
5f3b1a8b | 383 | struct acpi_madt_nmi_source *nmi_src = NULL; |
1da177e4 | 384 | |
5f3b1a8b | 385 | nmi_src = (struct acpi_madt_nmi_source *)header; |
1da177e4 LT |
386 | |
387 | if (BAD_MADT_ENTRY(nmi_src, end)) | |
388 | return -EINVAL; | |
389 | ||
390 | acpi_table_print_madt_entry(header); | |
391 | ||
392 | /* TBD: Support nimsrc entries? */ | |
393 | ||
394 | return 0; | |
395 | } | |
396 | ||
4be44fcd | 397 | #endif /* CONFIG_X86_IO_APIC */ |
1da177e4 | 398 | |
1da177e4 LT |
399 | /* |
400 | * acpi_pic_sci_set_trigger() | |
5f3b1a8b | 401 | * |
1da177e4 LT |
402 | * use ELCR to set PIC-mode trigger type for SCI |
403 | * | |
404 | * If a PIC-mode SCI is not recognized or gives spurious IRQ7's | |
405 | * it may require Edge Trigger -- use "acpi_sci=edge" | |
406 | * | |
407 | * Port 0x4d0-4d1 are ECLR1 and ECLR2, the Edge/Level Control Registers | |
408 | * for the 8259 PIC. bit[n] = 1 means irq[n] is Level, otherwise Edge. | |
27b46d76 SA |
409 | * ECLR1 is IRQs 0-7 (IRQ 0, 1, 2 must be 0) |
410 | * ECLR2 is IRQs 8-15 (IRQ 8, 13 must be 0) | |
1da177e4 LT |
411 | */ |
412 | ||
4be44fcd | 413 | void __init acpi_pic_sci_set_trigger(unsigned int irq, u16 trigger) |
1da177e4 LT |
414 | { |
415 | unsigned int mask = 1 << irq; | |
416 | unsigned int old, new; | |
417 | ||
418 | /* Real old ELCR mask */ | |
419 | old = inb(0x4d0) | (inb(0x4d1) << 8); | |
420 | ||
421 | /* | |
27b46d76 | 422 | * If we use ACPI to set PCI IRQs, then we should clear ELCR |
1da177e4 LT |
423 | * since we will set it correctly as we enable the PCI irq |
424 | * routing. | |
425 | */ | |
426 | new = acpi_noirq ? old : 0; | |
427 | ||
428 | /* | |
429 | * Update SCI information in the ELCR, it isn't in the PCI | |
430 | * routing tables.. | |
431 | */ | |
432 | switch (trigger) { | |
4be44fcd | 433 | case 1: /* Edge - clear */ |
1da177e4 LT |
434 | new &= ~mask; |
435 | break; | |
4be44fcd | 436 | case 3: /* Level - set */ |
1da177e4 LT |
437 | new |= mask; |
438 | break; | |
439 | } | |
440 | ||
441 | if (old == new) | |
442 | return; | |
443 | ||
444 | printk(PREFIX "setting ELCR to %04x (from %04x)\n", new, old); | |
445 | outb(new, 0x4d0); | |
446 | outb(new >> 8, 0x4d1); | |
447 | } | |
448 | ||
1da177e4 LT |
449 | int acpi_gsi_to_irq(u32 gsi, unsigned int *irq) |
450 | { | |
f023d764 | 451 | *irq = gsi; |
18dce6ba YL |
452 | |
453 | #ifdef CONFIG_X86_IO_APIC | |
454 | if (acpi_irq_model == ACPI_IRQ_MODEL_IOAPIC) | |
455 | setup_IO_APIC_irq_extra(gsi); | |
456 | #endif | |
457 | ||
1da177e4 LT |
458 | return 0; |
459 | } | |
460 | ||
1f3a6a15 KK |
461 | /* |
462 | * success: return IRQ number (>=0) | |
463 | * failure: return < 0 | |
464 | */ | |
e5198075 | 465 | int acpi_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity) |
1da177e4 LT |
466 | { |
467 | unsigned int irq; | |
468 | unsigned int plat_gsi = gsi; | |
469 | ||
470 | #ifdef CONFIG_PCI | |
471 | /* | |
472 | * Make sure all (legacy) PCI IRQs are set as level-triggered. | |
473 | */ | |
474 | if (acpi_irq_model == ACPI_IRQ_MODEL_PIC) { | |
e5198075 | 475 | if (trigger == ACPI_LEVEL_SENSITIVE) |
4be44fcd | 476 | eisa_set_level_irq(gsi); |
1da177e4 LT |
477 | } |
478 | #endif | |
479 | ||
480 | #ifdef CONFIG_X86_IO_APIC | |
481 | if (acpi_irq_model == ACPI_IRQ_MODEL_IOAPIC) { | |
e5198075 | 482 | plat_gsi = mp_register_gsi(dev, gsi, trigger, polarity); |
1da177e4 LT |
483 | } |
484 | #endif | |
18dce6ba YL |
485 | irq = plat_gsi; |
486 | ||
1da177e4 LT |
487 | return irq; |
488 | } | |
4be44fcd | 489 | |
1da177e4 LT |
490 | /* |
491 | * ACPI based hotplug support for CPU | |
492 | */ | |
493 | #ifdef CONFIG_ACPI_HOTPLUG_CPU | |
d8191fa4 | 494 | #include <acpi/processor.h> |
009cbadb | 495 | |
0271f910 HL |
496 | static void acpi_map_cpu2node(acpi_handle handle, int cpu, int physid) |
497 | { | |
498 | #ifdef CONFIG_ACPI_NUMA | |
499 | int nid; | |
500 | ||
501 | nid = acpi_get_node(handle); | |
502 | if (nid == -1 || !node_online(nid)) | |
503 | return; | |
504 | #ifdef CONFIG_X86_64 | |
505 | apicid_to_node[physid] = nid; | |
506 | numa_set_node(cpu, nid); | |
507 | #else /* CONFIG_X86_32 */ | |
508 | apicid_2_node[physid] = nid; | |
509 | cpu_to_node_map[cpu] = nid; | |
510 | #endif | |
511 | ||
512 | #endif | |
513 | } | |
009cbadb SR |
514 | |
515 | static int __cpuinit _acpi_map_lsapic(acpi_handle handle, int *pcpu) | |
1da177e4 | 516 | { |
73fea175 AR |
517 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
518 | union acpi_object *obj; | |
5f3b1a8b | 519 | struct acpi_madt_local_apic *lapic; |
ee943a82 | 520 | cpumask_var_t tmp_map, new_map; |
73fea175 AR |
521 | u8 physid; |
522 | int cpu; | |
ee943a82 | 523 | int retval = -ENOMEM; |
73fea175 AR |
524 | |
525 | if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer))) | |
526 | return -EINVAL; | |
527 | ||
528 | if (!buffer.length || !buffer.pointer) | |
529 | return -EINVAL; | |
530 | ||
531 | obj = buffer.pointer; | |
532 | if (obj->type != ACPI_TYPE_BUFFER || | |
533 | obj->buffer.length < sizeof(*lapic)) { | |
534 | kfree(buffer.pointer); | |
535 | return -EINVAL; | |
536 | } | |
537 | ||
5f3b1a8b | 538 | lapic = (struct acpi_madt_local_apic *)obj->buffer.pointer; |
73fea175 | 539 | |
5f3b1a8b AS |
540 | if (lapic->header.type != ACPI_MADT_TYPE_LOCAL_APIC || |
541 | !(lapic->lapic_flags & ACPI_MADT_ENABLED)) { | |
73fea175 AR |
542 | kfree(buffer.pointer); |
543 | return -EINVAL; | |
544 | } | |
545 | ||
546 | physid = lapic->id; | |
547 | ||
548 | kfree(buffer.pointer); | |
549 | buffer.length = ACPI_ALLOCATE_BUFFER; | |
550 | buffer.pointer = NULL; | |
551 | ||
ee943a82 RR |
552 | if (!alloc_cpumask_var(&tmp_map, GFP_KERNEL)) |
553 | goto out; | |
554 | ||
555 | if (!alloc_cpumask_var(&new_map, GFP_KERNEL)) | |
556 | goto free_tmp_map; | |
557 | ||
558 | cpumask_copy(tmp_map, cpu_present_mask); | |
dfac2189 | 559 | acpi_register_lapic(physid, lapic->lapic_flags & ACPI_MADT_ENABLED); |
73fea175 AR |
560 | |
561 | /* | |
562 | * If mp_register_lapic successfully generates a new logical cpu | |
563 | * number, then the following will get us exactly what was mapped | |
564 | */ | |
ee943a82 RR |
565 | cpumask_andnot(new_map, cpu_present_mask, tmp_map); |
566 | if (cpumask_empty(new_map)) { | |
73fea175 | 567 | printk ("Unable to map lapic to logical cpu number\n"); |
ee943a82 RR |
568 | retval = -EINVAL; |
569 | goto free_new_map; | |
73fea175 AR |
570 | } |
571 | ||
d8191fa4 AC |
572 | acpi_processor_set_pdc(handle); |
573 | ||
ee943a82 | 574 | cpu = cpumask_first(new_map); |
0271f910 | 575 | acpi_map_cpu2node(handle, cpu, physid); |
73fea175 AR |
576 | |
577 | *pcpu = cpu; | |
ee943a82 RR |
578 | retval = 0; |
579 | ||
580 | free_new_map: | |
581 | free_cpumask_var(new_map); | |
582 | free_tmp_map: | |
583 | free_cpumask_var(tmp_map); | |
584 | out: | |
585 | return retval; | |
1da177e4 | 586 | } |
1da177e4 | 587 | |
009cbadb SR |
588 | /* wrapper to silence section mismatch warning */ |
589 | int __ref acpi_map_lsapic(acpi_handle handle, int *pcpu) | |
590 | { | |
591 | return _acpi_map_lsapic(handle, pcpu); | |
592 | } | |
4be44fcd | 593 | EXPORT_SYMBOL(acpi_map_lsapic); |
1da177e4 | 594 | |
4be44fcd | 595 | int acpi_unmap_lsapic(int cpu) |
1da177e4 | 596 | { |
71fff5e6 | 597 | per_cpu(x86_cpu_to_apicid, cpu) = -1; |
9628937d | 598 | set_cpu_present(cpu, false); |
73fea175 AR |
599 | num_processors--; |
600 | ||
601 | return (0); | |
1da177e4 | 602 | } |
4be44fcd | 603 | |
1da177e4 | 604 | EXPORT_SYMBOL(acpi_unmap_lsapic); |
4be44fcd | 605 | #endif /* CONFIG_ACPI_HOTPLUG_CPU */ |
1da177e4 | 606 | |
4be44fcd | 607 | int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base) |
b1bb248a KK |
608 | { |
609 | /* TBD */ | |
610 | return -EINVAL; | |
611 | } | |
4be44fcd | 612 | |
b1bb248a KK |
613 | EXPORT_SYMBOL(acpi_register_ioapic); |
614 | ||
4be44fcd | 615 | int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base) |
b1bb248a KK |
616 | { |
617 | /* TBD */ | |
618 | return -EINVAL; | |
619 | } | |
4be44fcd | 620 | |
b1bb248a KK |
621 | EXPORT_SYMBOL(acpi_unregister_ioapic); |
622 | ||
5f3b1a8b | 623 | static int __init acpi_parse_sbf(struct acpi_table_header *table) |
1da177e4 | 624 | { |
5f3b1a8b | 625 | struct acpi_table_boot *sb; |
1da177e4 | 626 | |
5f3b1a8b | 627 | sb = (struct acpi_table_boot *)table; |
1da177e4 LT |
628 | if (!sb) { |
629 | printk(KERN_WARNING PREFIX "Unable to map SBF\n"); | |
630 | return -ENODEV; | |
631 | } | |
632 | ||
5f3b1a8b | 633 | sbf_port = sb->cmos_index; /* Save CMOS port */ |
1da177e4 LT |
634 | |
635 | return 0; | |
636 | } | |
637 | ||
1da177e4 | 638 | #ifdef CONFIG_HPET_TIMER |
2d0c87c3 | 639 | #include <asm/hpet.h> |
1da177e4 | 640 | |
a1dfd851 AD |
641 | static struct __initdata resource *hpet_res; |
642 | ||
5f3b1a8b | 643 | static int __init acpi_parse_hpet(struct acpi_table_header *table) |
1da177e4 LT |
644 | { |
645 | struct acpi_table_hpet *hpet_tbl; | |
646 | ||
5f3b1a8b | 647 | hpet_tbl = (struct acpi_table_hpet *)table; |
1da177e4 LT |
648 | if (!hpet_tbl) { |
649 | printk(KERN_WARNING PREFIX "Unable to map HPET\n"); | |
650 | return -ENODEV; | |
651 | } | |
652 | ||
ad363f80 | 653 | if (hpet_tbl->address.space_id != ACPI_SPACE_MEM) { |
1da177e4 LT |
654 | printk(KERN_WARNING PREFIX "HPET timers must be located in " |
655 | "memory.\n"); | |
656 | return -1; | |
657 | } | |
f0f4c343 | 658 | |
2d0c87c3 | 659 | hpet_address = hpet_tbl->address.address; |
c8bc6f3c | 660 | hpet_blockid = hpet_tbl->sequence; |
f4df73c2 TG |
661 | |
662 | /* | |
663 | * Some broken BIOSes advertise HPET at 0x0. We really do not | |
664 | * want to allocate a resource there. | |
665 | */ | |
666 | if (!hpet_address) { | |
667 | printk(KERN_WARNING PREFIX | |
668 | "HPET id: %#x base: %#lx is invalid\n", | |
669 | hpet_tbl->id, hpet_address); | |
670 | return 0; | |
671 | } | |
672 | #ifdef CONFIG_X86_64 | |
673 | /* | |
674 | * Some even more broken BIOSes advertise HPET at | |
675 | * 0xfed0000000000000 instead of 0xfed00000. Fix it up and add | |
676 | * some noise: | |
677 | */ | |
678 | if (hpet_address == 0xfed0000000000000UL) { | |
679 | if (!hpet_force_user) { | |
680 | printk(KERN_WARNING PREFIX "HPET id: %#x " | |
681 | "base: 0xfed0000000000000 is bogus\n " | |
682 | "try hpet=force on the kernel command line to " | |
683 | "fix it up to 0xfed00000.\n", hpet_tbl->id); | |
684 | hpet_address = 0; | |
685 | return 0; | |
686 | } | |
687 | printk(KERN_WARNING PREFIX | |
688 | "HPET id: %#x base: 0xfed0000000000000 fixed up " | |
689 | "to 0xfed00000.\n", hpet_tbl->id); | |
690 | hpet_address >>= 32; | |
691 | } | |
692 | #endif | |
4be44fcd | 693 | printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n", |
2d0c87c3 | 694 | hpet_tbl->id, hpet_address); |
1da177e4 | 695 | |
a1dfd851 AD |
696 | /* |
697 | * Allocate and initialize the HPET firmware resource for adding into | |
698 | * the resource tree during the lateinit timeframe. | |
699 | */ | |
700 | #define HPET_RESOURCE_NAME_SIZE 9 | |
701 | hpet_res = alloc_bootmem(sizeof(*hpet_res) + HPET_RESOURCE_NAME_SIZE); | |
702 | ||
a1dfd851 AD |
703 | hpet_res->name = (void *)&hpet_res[1]; |
704 | hpet_res->flags = IORESOURCE_MEM; | |
705 | snprintf((char *)hpet_res->name, HPET_RESOURCE_NAME_SIZE, "HPET %u", | |
706 | hpet_tbl->sequence); | |
707 | ||
708 | hpet_res->start = hpet_address; | |
709 | hpet_res->end = hpet_address + (1 * 1024) - 1; | |
710 | ||
1da177e4 LT |
711 | return 0; |
712 | } | |
a1dfd851 AD |
713 | |
714 | /* | |
715 | * hpet_insert_resource inserts the HPET resources used into the resource | |
716 | * tree. | |
717 | */ | |
718 | static __init int hpet_insert_resource(void) | |
719 | { | |
720 | if (!hpet_res) | |
721 | return 1; | |
722 | ||
723 | return insert_resource(&iomem_resource, hpet_res); | |
724 | } | |
725 | ||
726 | late_initcall(hpet_insert_resource); | |
727 | ||
1da177e4 LT |
728 | #else |
729 | #define acpi_parse_hpet NULL | |
730 | #endif | |
731 | ||
5f3b1a8b | 732 | static int __init acpi_parse_fadt(struct acpi_table_header *table) |
1da177e4 | 733 | { |
90660ec3 | 734 | |
1da177e4 LT |
735 | #ifdef CONFIG_X86_PM_TIMER |
736 | /* detect the location of the ACPI PM Timer */ | |
5f3b1a8b | 737 | if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID) { |
1da177e4 | 738 | /* FADT rev. 2 */ |
5f3b1a8b | 739 | if (acpi_gbl_FADT.xpm_timer_block.space_id != |
4be44fcd | 740 | ACPI_ADR_SPACE_SYSTEM_IO) |
1da177e4 LT |
741 | return 0; |
742 | ||
5f3b1a8b | 743 | pmtmr_ioport = acpi_gbl_FADT.xpm_timer_block.address; |
e6e87b4b DSL |
744 | /* |
745 | * "X" fields are optional extensions to the original V1.0 | |
746 | * fields, so we must selectively expand V1.0 fields if the | |
747 | * corresponding X field is zero. | |
748 | */ | |
749 | if (!pmtmr_ioport) | |
5f3b1a8b | 750 | pmtmr_ioport = acpi_gbl_FADT.pm_timer_block; |
1da177e4 LT |
751 | } else { |
752 | /* FADT rev. 1 */ | |
5f3b1a8b | 753 | pmtmr_ioport = acpi_gbl_FADT.pm_timer_block; |
1da177e4 LT |
754 | } |
755 | if (pmtmr_ioport) | |
4be44fcd LB |
756 | printk(KERN_INFO PREFIX "PM-Timer IO Port: %#x\n", |
757 | pmtmr_ioport); | |
1da177e4 LT |
758 | #endif |
759 | return 0; | |
760 | } | |
761 | ||
1da177e4 LT |
762 | #ifdef CONFIG_X86_LOCAL_APIC |
763 | /* | |
764 | * Parse LAPIC entries in MADT | |
765 | * returns 0 on success, < 0 on error | |
766 | */ | |
31d2092e AS |
767 | |
768 | static void __init acpi_register_lapic_address(unsigned long address) | |
769 | { | |
770 | mp_lapic_addr = address; | |
771 | ||
772 | set_fixmap_nocache(FIX_APIC_BASE, address); | |
fb3bbd6a | 773 | if (boot_cpu_physical_apicid == -1U) { |
4c9961d5 | 774 | boot_cpu_physical_apicid = read_apic_id(); |
fb3bbd6a YL |
775 | apic_version[boot_cpu_physical_apicid] = |
776 | GET_APIC_VERSION(apic_read(APIC_LVR)); | |
fb3bbd6a | 777 | } |
31d2092e AS |
778 | } |
779 | ||
cbf9bd60 YL |
780 | static int __init early_acpi_parse_madt_lapic_addr_ovr(void) |
781 | { | |
782 | int count; | |
783 | ||
784 | if (!cpu_has_apic) | |
785 | return -ENODEV; | |
786 | ||
787 | /* | |
788 | * Note that the LAPIC address is obtained from the MADT (32-bit value) | |
789 | * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value). | |
790 | */ | |
791 | ||
792 | count = | |
793 | acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE, | |
794 | acpi_parse_lapic_addr_ovr, 0); | |
795 | if (count < 0) { | |
796 | printk(KERN_ERR PREFIX | |
797 | "Error parsing LAPIC address override entry\n"); | |
798 | return count; | |
799 | } | |
800 | ||
801 | acpi_register_lapic_address(acpi_lapic_addr); | |
802 | ||
803 | return count; | |
804 | } | |
805 | ||
4be44fcd | 806 | static int __init acpi_parse_madt_lapic_entries(void) |
1da177e4 LT |
807 | { |
808 | int count; | |
7237d3de | 809 | int x2count = 0; |
1da177e4 | 810 | |
0fcd2709 AK |
811 | if (!cpu_has_apic) |
812 | return -ENODEV; | |
813 | ||
5f3b1a8b | 814 | /* |
1da177e4 LT |
815 | * Note that the LAPIC address is obtained from the MADT (32-bit value) |
816 | * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value). | |
817 | */ | |
818 | ||
4be44fcd | 819 | count = |
5f3b1a8b | 820 | acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE, |
4be44fcd | 821 | acpi_parse_lapic_addr_ovr, 0); |
1da177e4 | 822 | if (count < 0) { |
4be44fcd LB |
823 | printk(KERN_ERR PREFIX |
824 | "Error parsing LAPIC address override entry\n"); | |
1da177e4 LT |
825 | return count; |
826 | } | |
827 | ||
31d2092e | 828 | acpi_register_lapic_address(acpi_lapic_addr); |
1da177e4 | 829 | |
ac049c1d JS |
830 | count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_SAPIC, |
831 | acpi_parse_sapic, MAX_APICS); | |
832 | ||
7237d3de SS |
833 | if (!count) { |
834 | x2count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC, | |
835 | acpi_parse_x2apic, MAX_APICS); | |
ac049c1d JS |
836 | count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC, |
837 | acpi_parse_lapic, MAX_APICS); | |
7237d3de SS |
838 | } |
839 | if (!count && !x2count) { | |
1da177e4 LT |
840 | printk(KERN_ERR PREFIX "No LAPIC entries present\n"); |
841 | /* TBD: Cleanup to allow fallback to MPS */ | |
842 | return -ENODEV; | |
7237d3de | 843 | } else if (count < 0 || x2count < 0) { |
1da177e4 LT |
844 | printk(KERN_ERR PREFIX "Error parsing LAPIC entry\n"); |
845 | /* TBD: Cleanup to allow fallback to MPS */ | |
846 | return count; | |
847 | } | |
848 | ||
7237d3de SS |
849 | x2count = |
850 | acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC_NMI, | |
851 | acpi_parse_x2apic_nmi, 0); | |
4be44fcd | 852 | count = |
5f3b1a8b | 853 | acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI, acpi_parse_lapic_nmi, 0); |
7237d3de | 854 | if (count < 0 || x2count < 0) { |
1da177e4 LT |
855 | printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n"); |
856 | /* TBD: Cleanup to allow fallback to MPS */ | |
857 | return count; | |
858 | } | |
859 | return 0; | |
860 | } | |
4be44fcd | 861 | #endif /* CONFIG_X86_LOCAL_APIC */ |
1da177e4 | 862 | |
8466361a | 863 | #ifdef CONFIG_X86_IO_APIC |
11113f84 AS |
864 | #define MP_ISA_BUS 0 |
865 | ||
d49c4288 | 866 | #ifdef CONFIG_X86_ES7000 |
11113f84 AS |
867 | extern int es7000_plat; |
868 | #endif | |
869 | ||
3f4a739c YL |
870 | int __init acpi_probe_gsi(void) |
871 | { | |
872 | int idx; | |
873 | int gsi; | |
874 | int max_gsi = 0; | |
875 | ||
876 | if (acpi_disabled) | |
877 | return 0; | |
878 | ||
879 | if (!acpi_ioapic) | |
880 | return 0; | |
881 | ||
882 | max_gsi = 0; | |
883 | for (idx = 0; idx < nr_ioapics; idx++) { | |
2a4ab640 | 884 | gsi = mp_gsi_routing[idx].gsi_end; |
3f4a739c YL |
885 | |
886 | if (gsi > max_gsi) | |
887 | max_gsi = gsi; | |
888 | } | |
889 | ||
890 | return max_gsi + 1; | |
891 | } | |
892 | ||
c2c21745 JSR |
893 | static void assign_to_mp_irq(struct mpc_intsrc *m, |
894 | struct mpc_intsrc *mp_irq) | |
fcfa146e | 895 | { |
c2c21745 | 896 | memcpy(mp_irq, m, sizeof(struct mpc_intsrc)); |
fcfa146e YL |
897 | } |
898 | ||
c2c21745 JSR |
899 | static int mp_irq_cmp(struct mpc_intsrc *mp_irq, |
900 | struct mpc_intsrc *m) | |
fcfa146e | 901 | { |
c2c21745 | 902 | return memcmp(mp_irq, m, sizeof(struct mpc_intsrc)); |
fcfa146e YL |
903 | } |
904 | ||
c2c21745 | 905 | static void save_mp_irq(struct mpc_intsrc *m) |
fcfa146e YL |
906 | { |
907 | int i; | |
908 | ||
909 | for (i = 0; i < mp_irq_entries; i++) { | |
910 | if (!mp_irq_cmp(&mp_irqs[i], m)) | |
911 | return; | |
912 | } | |
913 | ||
914 | assign_to_mp_irq(m, &mp_irqs[mp_irq_entries]); | |
915 | if (++mp_irq_entries == MAX_IRQ_SOURCES) | |
916 | panic("Max # of irq sources exceeded!!\n"); | |
917 | } | |
918 | ||
11113f84 AS |
919 | void __init mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger, u32 gsi) |
920 | { | |
6df8809b YL |
921 | int ioapic; |
922 | int pin; | |
c2c21745 | 923 | struct mpc_intsrc mp_irq; |
11113f84 AS |
924 | |
925 | /* | |
926 | * Convert 'gsi' to 'ioapic.pin'. | |
927 | */ | |
928 | ioapic = mp_find_ioapic(gsi); | |
929 | if (ioapic < 0) | |
930 | return; | |
c3e137d1 | 931 | pin = mp_find_ioapic_pin(ioapic, gsi); |
11113f84 AS |
932 | |
933 | /* | |
934 | * TBD: This check is for faulty timer entries, where the override | |
935 | * erroneously sets the trigger to level, resulting in a HUGE | |
936 | * increase of timer interrupts! | |
937 | */ | |
938 | if ((bus_irq == 0) && (trigger == 3)) | |
939 | trigger = 1; | |
940 | ||
c2c21745 JSR |
941 | mp_irq.type = MP_INTSRC; |
942 | mp_irq.irqtype = mp_INT; | |
943 | mp_irq.irqflag = (trigger << 2) | polarity; | |
944 | mp_irq.srcbus = MP_ISA_BUS; | |
945 | mp_irq.srcbusirq = bus_irq; /* IRQ */ | |
946 | mp_irq.dstapic = mp_ioapics[ioapic].apicid; /* APIC ID */ | |
947 | mp_irq.dstirq = pin; /* INTIN# */ | |
11113f84 | 948 | |
fcfa146e | 949 | save_mp_irq(&mp_irq); |
11113f84 AS |
950 | } |
951 | ||
952 | void __init mp_config_acpi_legacy_irqs(void) | |
953 | { | |
6df8809b YL |
954 | int i; |
955 | int ioapic; | |
956 | unsigned int dstapic; | |
c2c21745 | 957 | struct mpc_intsrc mp_irq; |
11113f84 AS |
958 | |
959 | #if defined (CONFIG_MCA) || defined (CONFIG_EISA) | |
960 | /* | |
961 | * Fabricate the legacy ISA bus (bus #31). | |
962 | */ | |
963 | mp_bus_id_to_type[MP_ISA_BUS] = MP_BUS_ISA; | |
964 | #endif | |
965 | set_bit(MP_ISA_BUS, mp_bus_not_pci); | |
cfc1b9a6 | 966 | pr_debug("Bus #%d is ISA\n", MP_ISA_BUS); |
11113f84 | 967 | |
d49c4288 | 968 | #ifdef CONFIG_X86_ES7000 |
11113f84 AS |
969 | /* |
970 | * Older generations of ES7000 have no legacy identity mappings | |
971 | */ | |
972 | if (es7000_plat == 1) | |
973 | return; | |
974 | #endif | |
975 | ||
976 | /* | |
977 | * Locate the IOAPIC that manages the ISA IRQs (0-15). | |
978 | */ | |
979 | ioapic = mp_find_ioapic(0); | |
980 | if (ioapic < 0) | |
981 | return; | |
b5ba7e6d | 982 | dstapic = mp_ioapics[ioapic].apicid; |
11113f84 | 983 | |
11113f84 AS |
984 | /* |
985 | * Use the default configuration for the IRQs 0-15. Unless | |
986 | * overridden by (MADT) interrupt source override entries. | |
987 | */ | |
988 | for (i = 0; i < 16; i++) { | |
989 | int idx; | |
990 | ||
991 | for (idx = 0; idx < mp_irq_entries; idx++) { | |
c2c21745 | 992 | struct mpc_intsrc *irq = mp_irqs + idx; |
11113f84 AS |
993 | |
994 | /* Do we already have a mapping for this ISA IRQ? */ | |
c2c21745 | 995 | if (irq->srcbus == MP_ISA_BUS && irq->srcbusirq == i) |
11113f84 AS |
996 | break; |
997 | ||
998 | /* Do we already have a mapping for this IOAPIC pin */ | |
c2c21745 | 999 | if (irq->dstapic == dstapic && irq->dstirq == i) |
11113f84 AS |
1000 | break; |
1001 | } | |
1002 | ||
1003 | if (idx != mp_irq_entries) { | |
1004 | printk(KERN_DEBUG "ACPI: IRQ%d used by override.\n", i); | |
1005 | continue; /* IRQ already used */ | |
1006 | } | |
1007 | ||
c2c21745 JSR |
1008 | mp_irq.type = MP_INTSRC; |
1009 | mp_irq.irqflag = 0; /* Conforming */ | |
1010 | mp_irq.srcbus = MP_ISA_BUS; | |
1011 | mp_irq.dstapic = dstapic; | |
1012 | mp_irq.irqtype = mp_INT; | |
1013 | mp_irq.srcbusirq = i; /* Identity mapped */ | |
1014 | mp_irq.dstirq = i; | |
11113f84 | 1015 | |
fcfa146e | 1016 | save_mp_irq(&mp_irq); |
11113f84 AS |
1017 | } |
1018 | } | |
1019 | ||
e5198075 | 1020 | static int mp_config_acpi_gsi(struct device *dev, u32 gsi, int trigger, |
a31f8205 YL |
1021 | int polarity) |
1022 | { | |
1023 | #ifdef CONFIG_X86_MPPARSE | |
1024 | struct mpc_intsrc mp_irq; | |
1025 | struct pci_dev *pdev; | |
1026 | unsigned char number; | |
1027 | unsigned int devfn; | |
1028 | int ioapic; | |
1029 | u8 pin; | |
1030 | ||
1031 | if (!acpi_ioapic) | |
1032 | return 0; | |
1033 | if (!dev) | |
1034 | return 0; | |
1035 | if (dev->bus != &pci_bus_type) | |
1036 | return 0; | |
1037 | ||
1038 | pdev = to_pci_dev(dev); | |
1039 | number = pdev->bus->number; | |
1040 | devfn = pdev->devfn; | |
1041 | pin = pdev->pin; | |
1042 | /* print the entry should happen on mptable identically */ | |
1043 | mp_irq.type = MP_INTSRC; | |
1044 | mp_irq.irqtype = mp_INT; | |
e5198075 | 1045 | mp_irq.irqflag = (trigger == ACPI_EDGE_SENSITIVE ? 4 : 0x0c) | |
a31f8205 YL |
1046 | (polarity == ACPI_ACTIVE_HIGH ? 1 : 3); |
1047 | mp_irq.srcbus = number; | |
1048 | mp_irq.srcbusirq = (((devfn >> 3) & 0x1f) << 2) | ((pin - 1) & 3); | |
1049 | ioapic = mp_find_ioapic(gsi); | |
bdfe8ac1 | 1050 | mp_irq.dstapic = mp_ioapics[ioapic].apicid; |
a31f8205 YL |
1051 | mp_irq.dstirq = mp_find_ioapic_pin(ioapic, gsi); |
1052 | ||
1053 | save_mp_irq(&mp_irq); | |
1054 | #endif | |
1055 | return 0; | |
1056 | } | |
1057 | ||
e5198075 | 1058 | int mp_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity) |
11113f84 AS |
1059 | { |
1060 | int ioapic; | |
1061 | int ioapic_pin; | |
e5198075 | 1062 | struct io_apic_irq_attr irq_attr; |
11113f84 AS |
1063 | |
1064 | if (acpi_irq_model != ACPI_IRQ_MODEL_IOAPIC) | |
1065 | return gsi; | |
11113f84 AS |
1066 | |
1067 | /* Don't set up the ACPI SCI because it's already set up */ | |
1068 | if (acpi_gbl_FADT.sci_interrupt == gsi) | |
1069 | return gsi; | |
1070 | ||
1071 | ioapic = mp_find_ioapic(gsi); | |
1072 | if (ioapic < 0) { | |
1073 | printk(KERN_WARNING "No IOAPIC for GSI %u\n", gsi); | |
1074 | return gsi; | |
1075 | } | |
1076 | ||
c3e137d1 | 1077 | ioapic_pin = mp_find_ioapic_pin(ioapic, gsi); |
11113f84 AS |
1078 | |
1079 | #ifdef CONFIG_X86_32 | |
1080 | if (ioapic_renumber_irq) | |
1081 | gsi = ioapic_renumber_irq(ioapic, gsi); | |
1082 | #endif | |
1083 | ||
11113f84 AS |
1084 | if (ioapic_pin > MP_MAX_IOAPIC_PIN) { |
1085 | printk(KERN_ERR "Invalid reference to IOAPIC pin " | |
bdfe8ac1 | 1086 | "%d-%d\n", mp_ioapics[ioapic].apicid, |
11113f84 AS |
1087 | ioapic_pin); |
1088 | return gsi; | |
1089 | } | |
f1bdb523 YL |
1090 | |
1091 | if (enable_update_mptable) | |
1092 | mp_config_acpi_gsi(dev, gsi, trigger, polarity); | |
b9e0353f | 1093 | |
e5198075 YL |
1094 | set_io_apic_irq_attr(&irq_attr, ioapic, ioapic_pin, |
1095 | trigger == ACPI_EDGE_SENSITIVE ? 0 : 1, | |
1096 | polarity == ACPI_ACTIVE_HIGH ? 0 : 1); | |
1097 | io_apic_set_pci_routing(dev, gsi, &irq_attr); | |
b9e0353f | 1098 | |
11113f84 AS |
1099 | return gsi; |
1100 | } | |
1101 | ||
1da177e4 LT |
1102 | /* |
1103 | * Parse IOAPIC related entries in MADT | |
1104 | * returns 0 on success, < 0 on error | |
1105 | */ | |
4be44fcd | 1106 | static int __init acpi_parse_madt_ioapic_entries(void) |
1da177e4 LT |
1107 | { |
1108 | int count; | |
1109 | ||
1110 | /* | |
1111 | * ACPI interpreter is required to complete interrupt setup, | |
1112 | * so if it is off, don't enumerate the io-apics with ACPI. | |
1113 | * If MPS is present, it will handle them, | |
1114 | * otherwise the system will stay in PIC mode | |
1115 | */ | |
6b2b171a | 1116 | if (acpi_disabled || acpi_noirq) |
1da177e4 | 1117 | return -ENODEV; |
1da177e4 | 1118 | |
5f3b1a8b | 1119 | if (!cpu_has_apic) |
d3b6a349 AK |
1120 | return -ENODEV; |
1121 | ||
1da177e4 | 1122 | /* |
4be44fcd | 1123 | * if "noapic" boot option, don't look for IO-APICs |
1da177e4 LT |
1124 | */ |
1125 | if (skip_ioapic_setup) { | |
1126 | printk(KERN_INFO PREFIX "Skipping IOAPIC probe " | |
4be44fcd | 1127 | "due to 'noapic' option.\n"); |
1da177e4 LT |
1128 | return -ENODEV; |
1129 | } | |
1130 | ||
4be44fcd | 1131 | count = |
5f3b1a8b | 1132 | acpi_table_parse_madt(ACPI_MADT_TYPE_IO_APIC, acpi_parse_ioapic, |
4be44fcd | 1133 | MAX_IO_APICS); |
1da177e4 LT |
1134 | if (!count) { |
1135 | printk(KERN_ERR PREFIX "No IOAPIC entries present\n"); | |
1136 | return -ENODEV; | |
4be44fcd | 1137 | } else if (count < 0) { |
1da177e4 LT |
1138 | printk(KERN_ERR PREFIX "Error parsing IOAPIC entry\n"); |
1139 | return count; | |
1140 | } | |
1141 | ||
4be44fcd | 1142 | count = |
5f3b1a8b | 1143 | acpi_table_parse_madt(ACPI_MADT_TYPE_INTERRUPT_OVERRIDE, acpi_parse_int_src_ovr, |
71f521bb | 1144 | nr_irqs); |
1da177e4 | 1145 | if (count < 0) { |
4be44fcd LB |
1146 | printk(KERN_ERR PREFIX |
1147 | "Error parsing interrupt source overrides entry\n"); | |
1da177e4 LT |
1148 | /* TBD: Cleanup to allow fallback to MPS */ |
1149 | return count; | |
1150 | } | |
1151 | ||
1152 | /* | |
1153 | * If BIOS did not supply an INT_SRC_OVR for the SCI | |
1154 | * pretend we got one so we can set the SCI flags. | |
1155 | */ | |
1156 | if (!acpi_sci_override_gsi) | |
cee324b1 | 1157 | acpi_sci_ioapic_setup(acpi_gbl_FADT.sci_interrupt, 0, 0); |
1da177e4 | 1158 | |
af901ca1 | 1159 | /* Fill in identity legacy mappings where no override */ |
1da177e4 LT |
1160 | mp_config_acpi_legacy_irqs(); |
1161 | ||
4be44fcd | 1162 | count = |
5f3b1a8b | 1163 | acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE, acpi_parse_nmi_src, |
71f521bb | 1164 | nr_irqs); |
1da177e4 LT |
1165 | if (count < 0) { |
1166 | printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n"); | |
1167 | /* TBD: Cleanup to allow fallback to MPS */ | |
1168 | return count; | |
1169 | } | |
1170 | ||
1171 | return 0; | |
1172 | } | |
1173 | #else | |
1174 | static inline int acpi_parse_madt_ioapic_entries(void) | |
1175 | { | |
1176 | return -1; | |
1177 | } | |
8466361a | 1178 | #endif /* !CONFIG_X86_IO_APIC */ |
1da177e4 | 1179 | |
cbf9bd60 YL |
1180 | static void __init early_acpi_process_madt(void) |
1181 | { | |
1182 | #ifdef CONFIG_X86_LOCAL_APIC | |
1183 | int error; | |
1184 | ||
1185 | if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) { | |
1186 | ||
1187 | /* | |
1188 | * Parse MADT LAPIC entries | |
1189 | */ | |
1190 | error = early_acpi_parse_madt_lapic_addr_ovr(); | |
1191 | if (!error) { | |
1192 | acpi_lapic = 1; | |
1193 | smp_found_config = 1; | |
1194 | } | |
1195 | if (error == -EINVAL) { | |
1196 | /* | |
1197 | * Dell Precision Workstation 410, 610 come here. | |
1198 | */ | |
1199 | printk(KERN_ERR PREFIX | |
1200 | "Invalid BIOS MADT, disabling ACPI\n"); | |
1201 | disable_acpi(); | |
1202 | } | |
1203 | } | |
1204 | #endif | |
1205 | } | |
1206 | ||
4be44fcd | 1207 | static void __init acpi_process_madt(void) |
1da177e4 LT |
1208 | { |
1209 | #ifdef CONFIG_X86_LOCAL_APIC | |
7f8f97c3 | 1210 | int error; |
1da177e4 | 1211 | |
7f8f97c3 | 1212 | if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) { |
1da177e4 LT |
1213 | |
1214 | /* | |
1215 | * Parse MADT LAPIC entries | |
1216 | */ | |
1217 | error = acpi_parse_madt_lapic_entries(); | |
1218 | if (!error) { | |
1219 | acpi_lapic = 1; | |
1220 | ||
1221 | /* | |
1222 | * Parse MADT IO-APIC entries | |
1223 | */ | |
1224 | error = acpi_parse_madt_ioapic_entries(); | |
1225 | if (!error) { | |
1226 | acpi_irq_model = ACPI_IRQ_MODEL_IOAPIC; | |
1da177e4 LT |
1227 | acpi_ioapic = 1; |
1228 | ||
1229 | smp_found_config = 1; | |
1da177e4 LT |
1230 | } |
1231 | } | |
1232 | if (error == -EINVAL) { | |
1233 | /* | |
1234 | * Dell Precision Workstation 410, 610 come here. | |
1235 | */ | |
4be44fcd LB |
1236 | printk(KERN_ERR PREFIX |
1237 | "Invalid BIOS MADT, disabling ACPI\n"); | |
1da177e4 LT |
1238 | disable_acpi(); |
1239 | } | |
7b37b5fd LB |
1240 | } else { |
1241 | /* | |
1242 | * ACPI found no MADT, and so ACPI wants UP PIC mode. | |
1243 | * In the event an MPS table was found, forget it. | |
1244 | * Boot with "acpi=off" to use MPS on such a system. | |
1245 | */ | |
1246 | if (smp_found_config) { | |
1247 | printk(KERN_WARNING PREFIX | |
1248 | "No APIC-table, disabling MPS\n"); | |
1249 | smp_found_config = 0; | |
1250 | } | |
1da177e4 | 1251 | } |
69b88afa YL |
1252 | |
1253 | /* | |
1254 | * ACPI supports both logical (e.g. Hyper-Threading) and physical | |
1255 | * processors, where MPS only supports physical. | |
1256 | */ | |
1257 | if (acpi_lapic && acpi_ioapic) | |
1258 | printk(KERN_INFO "Using ACPI (MADT) for SMP configuration " | |
1259 | "information\n"); | |
1260 | else if (acpi_lapic) | |
1261 | printk(KERN_INFO "Using ACPI for processor (LAPIC) " | |
1262 | "configuration information\n"); | |
1da177e4 LT |
1263 | #endif |
1264 | return; | |
1265 | } | |
1266 | ||
1855256c | 1267 | static int __init disable_acpi_irq(const struct dmi_system_id *d) |
aea00143 AP |
1268 | { |
1269 | if (!acpi_force) { | |
1270 | printk(KERN_NOTICE "%s detected: force use of acpi=noirq\n", | |
1271 | d->ident); | |
1272 | acpi_noirq_set(); | |
1273 | } | |
1274 | return 0; | |
1275 | } | |
1276 | ||
1855256c | 1277 | static int __init disable_acpi_pci(const struct dmi_system_id *d) |
aea00143 AP |
1278 | { |
1279 | if (!acpi_force) { | |
1280 | printk(KERN_NOTICE "%s detected: force use of pci=noacpi\n", | |
1281 | d->ident); | |
1282 | acpi_disable_pci(); | |
1283 | } | |
1284 | return 0; | |
1285 | } | |
aea00143 | 1286 | |
1855256c | 1287 | static int __init dmi_disable_acpi(const struct dmi_system_id *d) |
aea00143 AP |
1288 | { |
1289 | if (!acpi_force) { | |
4be44fcd | 1290 | printk(KERN_NOTICE "%s detected: acpi off\n", d->ident); |
aea00143 AP |
1291 | disable_acpi(); |
1292 | } else { | |
1293 | printk(KERN_NOTICE | |
1294 | "Warning: DMI blacklist says broken, but acpi forced\n"); | |
1295 | } | |
1296 | return 0; | |
1297 | } | |
1298 | ||
e2079c43 RW |
1299 | /* |
1300 | * Force ignoring BIOS IRQ0 pin2 override | |
1301 | */ | |
1302 | static int __init dmi_ignore_irq0_timer_override(const struct dmi_system_id *d) | |
1303 | { | |
8d89adf4 IM |
1304 | /* |
1305 | * The ati_ixp4x0_rev() early PCI quirk should have set | |
1306 | * the acpi_skip_timer_override flag already: | |
1307 | */ | |
1308 | if (!acpi_skip_timer_override) { | |
1309 | WARN(1, KERN_ERR "ati_ixp4x0 quirk not complete.\n"); | |
1310 | pr_notice("%s detected: Ignoring BIOS IRQ0 pin2 override\n", | |
1311 | d->ident); | |
1312 | acpi_skip_timer_override = 1; | |
1313 | } | |
e2079c43 RW |
1314 | return 0; |
1315 | } | |
1316 | ||
aea00143 AP |
1317 | /* |
1318 | * If your system is blacklisted here, but you find that acpi=force | |
5b4c0b6f | 1319 | * works for you, please contact linux-acpi@vger.kernel.org |
aea00143 AP |
1320 | */ |
1321 | static struct dmi_system_id __initdata acpi_dmi_table[] = { | |
1322 | /* | |
1323 | * Boxes that need ACPI disabled | |
1324 | */ | |
1325 | { | |
4be44fcd LB |
1326 | .callback = dmi_disable_acpi, |
1327 | .ident = "IBM Thinkpad", | |
1328 | .matches = { | |
1329 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), | |
1330 | DMI_MATCH(DMI_BOARD_NAME, "2629H1G"), | |
1331 | }, | |
1332 | }, | |
aea00143 | 1333 | |
aea00143 AP |
1334 | /* |
1335 | * Boxes that need ACPI PCI IRQ routing disabled | |
1336 | */ | |
1337 | { | |
4be44fcd LB |
1338 | .callback = disable_acpi_irq, |
1339 | .ident = "ASUS A7V", | |
1340 | .matches = { | |
1341 | DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC"), | |
1342 | DMI_MATCH(DMI_BOARD_NAME, "<A7V>"), | |
1343 | /* newer BIOS, Revision 1011, does work */ | |
1344 | DMI_MATCH(DMI_BIOS_VERSION, | |
1345 | "ASUS A7V ACPI BIOS Revision 1007"), | |
1346 | }, | |
1347 | }, | |
74586fca LB |
1348 | { |
1349 | /* | |
1350 | * Latest BIOS for IBM 600E (1.16) has bad pcinum | |
1351 | * for LPC bridge, which is needed for the PCI | |
1352 | * interrupt links to work. DSDT fix is in bug 5966. | |
1353 | * 2645, 2646 model numbers are shared with 600/600E/600X | |
1354 | */ | |
1355 | .callback = disable_acpi_irq, | |
1356 | .ident = "IBM Thinkpad 600 Series 2645", | |
1357 | .matches = { | |
1358 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), | |
1359 | DMI_MATCH(DMI_BOARD_NAME, "2645"), | |
1360 | }, | |
1361 | }, | |
1362 | { | |
1363 | .callback = disable_acpi_irq, | |
1364 | .ident = "IBM Thinkpad 600 Series 2646", | |
1365 | .matches = { | |
1366 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), | |
1367 | DMI_MATCH(DMI_BOARD_NAME, "2646"), | |
1368 | }, | |
1369 | }, | |
aea00143 AP |
1370 | /* |
1371 | * Boxes that need ACPI PCI IRQ routing and PCI scan disabled | |
1372 | */ | |
4be44fcd LB |
1373 | { /* _BBN 0 bug */ |
1374 | .callback = disable_acpi_pci, | |
1375 | .ident = "ASUS PR-DLS", | |
1376 | .matches = { | |
1377 | DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), | |
1378 | DMI_MATCH(DMI_BOARD_NAME, "PR-DLS"), | |
1379 | DMI_MATCH(DMI_BIOS_VERSION, | |
1380 | "ASUS PR-DLS ACPI BIOS Revision 1010"), | |
1381 | DMI_MATCH(DMI_BIOS_DATE, "03/21/2003") | |
1382 | }, | |
1383 | }, | |
aea00143 | 1384 | { |
4be44fcd LB |
1385 | .callback = disable_acpi_pci, |
1386 | .ident = "Acer TravelMate 36x Laptop", | |
1387 | .matches = { | |
1388 | DMI_MATCH(DMI_SYS_VENDOR, "Acer"), | |
1389 | DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 360"), | |
1390 | }, | |
1391 | }, | |
35af2821 AH |
1392 | {} |
1393 | }; | |
1394 | ||
1395 | /* second table for DMI checks that should run after early-quirks */ | |
1396 | static struct dmi_system_id __initdata acpi_dmi_table_late[] = { | |
e2079c43 RW |
1397 | /* |
1398 | * HP laptops which use a DSDT reporting as HP/SB400/10000, | |
1399 | * which includes some code which overrides all temperature | |
1400 | * trip points to 16C if the INTIN2 input of the I/O APIC | |
1401 | * is enabled. This input is incorrectly designated the | |
1402 | * ISA IRQ 0 via an interrupt source override even though | |
1403 | * it is wired to the output of the master 8259A and INTIN0 | |
1404 | * is not connected at all. Force ignoring BIOS IRQ0 pin2 | |
1405 | * override in that cases. | |
1406 | */ | |
e84956f9 RW |
1407 | { |
1408 | .callback = dmi_ignore_irq0_timer_override, | |
1409 | .ident = "HP nx6115 laptop", | |
1410 | .matches = { | |
1411 | DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), | |
1412 | DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6115"), | |
1413 | }, | |
1414 | }, | |
e2079c43 RW |
1415 | { |
1416 | .callback = dmi_ignore_irq0_timer_override, | |
1417 | .ident = "HP NX6125 laptop", | |
1418 | .matches = { | |
1419 | DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), | |
1420 | DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6125"), | |
1421 | }, | |
1422 | }, | |
1423 | { | |
1424 | .callback = dmi_ignore_irq0_timer_override, | |
1425 | .ident = "HP NX6325 laptop", | |
1426 | .matches = { | |
1427 | DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), | |
1428 | DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6325"), | |
1429 | }, | |
1430 | }, | |
e84956f9 RW |
1431 | { |
1432 | .callback = dmi_ignore_irq0_timer_override, | |
1433 | .ident = "HP 6715b laptop", | |
1434 | .matches = { | |
1435 | DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), | |
1436 | DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq 6715b"), | |
1437 | }, | |
1438 | }, | |
4be44fcd | 1439 | {} |
aea00143 AP |
1440 | }; |
1441 | ||
1da177e4 LT |
1442 | /* |
1443 | * acpi_boot_table_init() and acpi_boot_init() | |
1444 | * called from setup_arch(), always. | |
1445 | * 1. checksums all tables | |
1446 | * 2. enumerates lapics | |
1447 | * 3. enumerates io-apics | |
1448 | * | |
1449 | * acpi_table_init() is separate to allow reading SRAT without | |
1450 | * other side effects. | |
1451 | * | |
1452 | * side effects of acpi_boot_init: | |
1453 | * acpi_lapic = 1 if LAPIC found | |
1454 | * acpi_ioapic = 1 if IOAPIC found | |
1455 | * if (acpi_lapic && acpi_ioapic) smp_found_config = 1; | |
1456 | * if acpi_blacklisted() acpi_disabled = 1; | |
1457 | * acpi_irq_model=... | |
1458 | * ... | |
1da177e4 LT |
1459 | */ |
1460 | ||
8558e394 | 1461 | void __init acpi_boot_table_init(void) |
1da177e4 | 1462 | { |
aea00143 | 1463 | dmi_check_system(acpi_dmi_table); |
aea00143 | 1464 | |
1da177e4 LT |
1465 | /* |
1466 | * If acpi_disabled, bail out | |
1467 | * One exception: acpi=ht continues far enough to enumerate LAPICs | |
1468 | */ | |
1469 | if (acpi_disabled && !acpi_ht) | |
8558e394 | 1470 | return; |
1da177e4 | 1471 | |
5f3b1a8b | 1472 | /* |
1da177e4 LT |
1473 | * Initialize the ACPI boot-time table parser. |
1474 | */ | |
8558e394 | 1475 | if (acpi_table_init()) { |
1da177e4 | 1476 | disable_acpi(); |
8558e394 | 1477 | return; |
1da177e4 | 1478 | } |
1da177e4 | 1479 | |
5f3b1a8b | 1480 | acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf); |
1da177e4 LT |
1481 | |
1482 | /* | |
1483 | * blacklist may disable ACPI entirely | |
1484 | */ | |
8558e394 | 1485 | if (acpi_blacklisted()) { |
1da177e4 LT |
1486 | if (acpi_force) { |
1487 | printk(KERN_WARNING PREFIX "acpi=force override\n"); | |
1488 | } else { | |
1489 | printk(KERN_WARNING PREFIX "Disabling ACPI support\n"); | |
1490 | disable_acpi(); | |
8558e394 | 1491 | return; |
1da177e4 LT |
1492 | } |
1493 | } | |
cbf9bd60 YL |
1494 | } |
1495 | ||
1496 | int __init early_acpi_boot_init(void) | |
1497 | { | |
1498 | /* | |
1499 | * If acpi_disabled, bail out | |
1500 | * One exception: acpi=ht continues far enough to enumerate LAPICs | |
1501 | */ | |
1502 | if (acpi_disabled && !acpi_ht) | |
1503 | return 1; | |
1504 | ||
1505 | /* | |
1506 | * Process the Multiple APIC Description Table (MADT), if present | |
1507 | */ | |
1508 | early_acpi_process_madt(); | |
1da177e4 LT |
1509 | |
1510 | return 0; | |
1511 | } | |
1512 | ||
1da177e4 LT |
1513 | int __init acpi_boot_init(void) |
1514 | { | |
35af2821 AH |
1515 | /* those are executed after early-quirks are executed */ |
1516 | dmi_check_system(acpi_dmi_table_late); | |
1517 | ||
1da177e4 LT |
1518 | /* |
1519 | * If acpi_disabled, bail out | |
1520 | * One exception: acpi=ht continues far enough to enumerate LAPICs | |
1521 | */ | |
1522 | if (acpi_disabled && !acpi_ht) | |
4be44fcd | 1523 | return 1; |
1da177e4 | 1524 | |
5f3b1a8b | 1525 | acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf); |
1da177e4 LT |
1526 | |
1527 | /* | |
1528 | * set sci_int and PM timer address | |
1529 | */ | |
ceb6c468 | 1530 | acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt); |
1da177e4 LT |
1531 | |
1532 | /* | |
1533 | * Process the Multiple APIC Description Table (MADT), if present | |
1534 | */ | |
1535 | acpi_process_madt(); | |
1536 | ||
5f3b1a8b | 1537 | acpi_table_parse(ACPI_SIG_HPET, acpi_parse_hpet); |
1da177e4 | 1538 | |
b72d0db9 TG |
1539 | if (!acpi_noirq) |
1540 | x86_init.pci.init = pci_acpi_init; | |
1541 | ||
1da177e4 LT |
1542 | return 0; |
1543 | } | |
1a3f239d RR |
1544 | |
1545 | static int __init parse_acpi(char *arg) | |
1546 | { | |
1547 | if (!arg) | |
1548 | return -EINVAL; | |
1549 | ||
1550 | /* "acpi=off" disables both ACPI table parsing and interpreter */ | |
1551 | if (strcmp(arg, "off") == 0) { | |
1552 | disable_acpi(); | |
1553 | } | |
1554 | /* acpi=force to over-ride black-list */ | |
1555 | else if (strcmp(arg, "force") == 0) { | |
1556 | acpi_force = 1; | |
1557 | acpi_ht = 1; | |
1558 | acpi_disabled = 0; | |
1559 | } | |
1560 | /* acpi=strict disables out-of-spec workarounds */ | |
1561 | else if (strcmp(arg, "strict") == 0) { | |
1562 | acpi_strict = 1; | |
1563 | } | |
1564 | /* Limit ACPI just to boot-time to enable HT */ | |
1565 | else if (strcmp(arg, "ht") == 0) { | |
4c81ba49 LB |
1566 | if (!acpi_force) { |
1567 | printk(KERN_WARNING "acpi=ht will be removed in Linux-2.6.35\n"); | |
1a3f239d | 1568 | disable_acpi(); |
4c81ba49 | 1569 | } |
1a3f239d RR |
1570 | acpi_ht = 1; |
1571 | } | |
237889bf ZY |
1572 | /* acpi=rsdt use RSDT instead of XSDT */ |
1573 | else if (strcmp(arg, "rsdt") == 0) { | |
1574 | acpi_rsdt_forced = 1; | |
1575 | } | |
1a3f239d RR |
1576 | /* "acpi=noirq" disables ACPI interrupt routing */ |
1577 | else if (strcmp(arg, "noirq") == 0) { | |
1578 | acpi_noirq_set(); | |
1579 | } else { | |
1580 | /* Core will printk when we return error. */ | |
1581 | return -EINVAL; | |
1582 | } | |
1583 | return 0; | |
1584 | } | |
1585 | early_param("acpi", parse_acpi); | |
1586 | ||
1587 | /* FIXME: Using pci= for an ACPI parameter is a travesty. */ | |
1588 | static int __init parse_pci(char *arg) | |
1589 | { | |
1590 | if (arg && strcmp(arg, "noacpi") == 0) | |
1591 | acpi_disable_pci(); | |
1592 | return 0; | |
1593 | } | |
1594 | early_param("pci", parse_pci); | |
1595 | ||
3c999f14 YL |
1596 | int __init acpi_mps_check(void) |
1597 | { | |
1598 | #if defined(CONFIG_X86_LOCAL_APIC) && !defined(CONFIG_X86_MPPARSE) | |
1599 | /* mptable code is not built-in*/ | |
1600 | if (acpi_disabled || acpi_noirq) { | |
1601 | printk(KERN_WARNING "MPS support code is not built-in.\n" | |
1602 | "Using acpi=off or acpi=noirq or pci=noacpi " | |
1603 | "may have problem\n"); | |
1604 | return 1; | |
1605 | } | |
1606 | #endif | |
1607 | return 0; | |
1608 | } | |
1609 | ||
1a3f239d RR |
1610 | #ifdef CONFIG_X86_IO_APIC |
1611 | static int __init parse_acpi_skip_timer_override(char *arg) | |
1612 | { | |
1613 | acpi_skip_timer_override = 1; | |
1614 | return 0; | |
1615 | } | |
1616 | early_param("acpi_skip_timer_override", parse_acpi_skip_timer_override); | |
fa18f477 AK |
1617 | |
1618 | static int __init parse_acpi_use_timer_override(char *arg) | |
1619 | { | |
1620 | acpi_use_timer_override = 1; | |
1621 | return 0; | |
1622 | } | |
1623 | early_param("acpi_use_timer_override", parse_acpi_use_timer_override); | |
1a3f239d RR |
1624 | #endif /* CONFIG_X86_IO_APIC */ |
1625 | ||
1626 | static int __init setup_acpi_sci(char *s) | |
1627 | { | |
1628 | if (!s) | |
1629 | return -EINVAL; | |
1630 | if (!strcmp(s, "edge")) | |
5f3b1a8b AS |
1631 | acpi_sci_flags = ACPI_MADT_TRIGGER_EDGE | |
1632 | (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK); | |
1a3f239d | 1633 | else if (!strcmp(s, "level")) |
5f3b1a8b AS |
1634 | acpi_sci_flags = ACPI_MADT_TRIGGER_LEVEL | |
1635 | (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK); | |
1a3f239d | 1636 | else if (!strcmp(s, "high")) |
5f3b1a8b AS |
1637 | acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_HIGH | |
1638 | (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK); | |
1a3f239d | 1639 | else if (!strcmp(s, "low")) |
5f3b1a8b AS |
1640 | acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_LOW | |
1641 | (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK); | |
1a3f239d RR |
1642 | else |
1643 | return -EINVAL; | |
1644 | return 0; | |
1645 | } | |
1646 | early_param("acpi_sci", setup_acpi_sci); | |
d0a9081b AM |
1647 | |
1648 | int __acpi_acquire_global_lock(unsigned int *lock) | |
1649 | { | |
1650 | unsigned int old, new, val; | |
1651 | do { | |
1652 | old = *lock; | |
1653 | new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1)); | |
1654 | val = cmpxchg(lock, old, new); | |
1655 | } while (unlikely (val != old)); | |
1656 | return (new < 3) ? -1 : 0; | |
1657 | } | |
1658 | ||
1659 | int __acpi_release_global_lock(unsigned int *lock) | |
1660 | { | |
1661 | unsigned int old, new, val; | |
1662 | do { | |
1663 | old = *lock; | |
1664 | new = old & ~0x3; | |
1665 | val = cmpxchg(lock, old, new); | |
1666 | } while (unlikely (val != old)); | |
1667 | return old & 0x1; | |
1668 | } |