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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> |
f0f4c343 AD |
34 | #include <linux/bootmem.h> |
35 | #include <linux/ioport.h> | |
a31f8205 | 36 | #include <linux/pci.h> |
1da177e4 LT |
37 | |
38 | #include <asm/pgtable.h> | |
39 | #include <asm/io_apic.h> | |
40 | #include <asm/apic.h> | |
41 | #include <asm/io.h> | |
1da177e4 | 42 | #include <asm/mpspec.h> |
dfac2189 | 43 | #include <asm/smp.h> |
1da177e4 | 44 | |
e8924acb | 45 | static int __initdata acpi_force = 0; |
237889bf | 46 | u32 acpi_rsdt_forced; |
c636f753 | 47 | int acpi_disabled; |
df3bb57d AK |
48 | EXPORT_SYMBOL(acpi_disabled); |
49 | ||
1da177e4 | 50 | #ifdef CONFIG_X86_64 |
1dcdd3d1 | 51 | # include <asm/proto.h> |
4be44fcd | 52 | #endif /* X86 */ |
1da177e4 LT |
53 | |
54 | #define BAD_MADT_ENTRY(entry, end) ( \ | |
55 | (!entry) || (unsigned long)entry + sizeof(*entry) > end || \ | |
5f3b1a8b | 56 | ((struct acpi_subtable_header *)entry)->length < sizeof(*entry)) |
1da177e4 LT |
57 | |
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 | int acpi_ht __initdata = 1; /* enable HT */ |
64 | ||
65 | int acpi_lapic; | |
66 | int acpi_ioapic; | |
67 | int acpi_strict; | |
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; |
1da177e4 LT |
73 | |
74 | #ifdef CONFIG_X86_LOCAL_APIC | |
75 | static u64 acpi_lapic_addr __initdata = APIC_DEFAULT_PHYS_BASE; | |
76 | #endif | |
77 | ||
78 | #ifndef __HAVE_ARCH_CMPXCHG | |
79 | #warning ACPI uses CMPXCHG, i486 and later hardware | |
80 | #endif | |
81 | ||
1da177e4 LT |
82 | /* -------------------------------------------------------------------------- |
83 | Boot-time Configuration | |
84 | -------------------------------------------------------------------------- */ | |
85 | ||
86 | /* | |
87 | * The default interrupt routing model is PIC (8259). This gets | |
27b46d76 | 88 | * overridden if IOAPICs are enumerated (below). |
1da177e4 | 89 | */ |
4be44fcd | 90 | enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_PIC; |
1da177e4 | 91 | |
1da177e4 LT |
92 | |
93 | /* | |
94 | * Temporarily use the virtual area starting from FIX_IO_APIC_BASE_END, | |
95 | * to map the target physical address. The problem is that set_fixmap() | |
96 | * provides a single page, and it is possible that the page is not | |
97 | * sufficient. | |
98 | * By using this area, we can map up to MAX_IO_APICS pages temporarily, | |
99 | * i.e. until the next __va_range() call. | |
100 | * | |
101 | * Important Safety Note: The fixed I/O APIC page numbers are *subtracted* | |
102 | * from the fixed base. That's why we start at FIX_IO_APIC_BASE_END and | |
103 | * count idx down while incrementing the phys address. | |
104 | */ | |
2fdf0741 | 105 | char *__init __acpi_map_table(unsigned long phys, unsigned long size) |
1da177e4 | 106 | { |
1da177e4 | 107 | |
f34fa82b YL |
108 | if (!phys || !size) |
109 | return NULL; | |
110 | ||
7d97277b YL |
111 | return early_ioremap(phys, size); |
112 | } | |
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 | ||
dfac2189 AS |
148 | static void __cpuinit acpi_register_lapic(int id, u8 enabled) |
149 | { | |
fb3bbd6a YL |
150 | unsigned int ver = 0; |
151 | ||
dfac2189 AS |
152 | if (!enabled) { |
153 | ++disabled_cpus; | |
154 | return; | |
155 | } | |
156 | ||
fb3bbd6a YL |
157 | if (boot_cpu_physical_apicid != -1U) |
158 | ver = apic_version[boot_cpu_physical_apicid]; | |
fb3bbd6a YL |
159 | |
160 | generic_processor_info(id, ver); | |
dfac2189 AS |
161 | } |
162 | ||
7237d3de SS |
163 | static int __init |
164 | acpi_parse_x2apic(struct acpi_subtable_header *header, const unsigned long end) | |
165 | { | |
166 | struct acpi_madt_local_x2apic *processor = NULL; | |
167 | ||
168 | processor = (struct acpi_madt_local_x2apic *)header; | |
169 | ||
170 | if (BAD_MADT_ENTRY(processor, end)) | |
171 | return -EINVAL; | |
172 | ||
173 | acpi_table_print_madt_entry(header); | |
174 | ||
175 | #ifdef CONFIG_X86_X2APIC | |
176 | /* | |
177 | * We need to register disabled CPU as well to permit | |
178 | * counting disabled CPUs. This allows us to size | |
179 | * cpus_possible_map more accurately, to permit | |
180 | * to not preallocating memory for all NR_CPUS | |
181 | * when we use CPU hotplug. | |
182 | */ | |
183 | acpi_register_lapic(processor->local_apic_id, /* APIC ID */ | |
184 | processor->lapic_flags & ACPI_MADT_ENABLED); | |
185 | #else | |
186 | printk(KERN_WARNING PREFIX "x2apic entry ignored\n"); | |
187 | #endif | |
188 | ||
189 | return 0; | |
190 | } | |
191 | ||
1da177e4 | 192 | static int __init |
5f3b1a8b | 193 | acpi_parse_lapic(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 194 | { |
5f3b1a8b | 195 | struct acpi_madt_local_apic *processor = NULL; |
1da177e4 | 196 | |
5f3b1a8b | 197 | processor = (struct acpi_madt_local_apic *)header; |
1da177e4 LT |
198 | |
199 | if (BAD_MADT_ENTRY(processor, end)) | |
200 | return -EINVAL; | |
201 | ||
202 | acpi_table_print_madt_entry(header); | |
203 | ||
7f66ae48 AR |
204 | /* |
205 | * We need to register disabled CPU as well to permit | |
206 | * counting disabled CPUs. This allows us to size | |
207 | * cpus_possible_map more accurately, to permit | |
208 | * to not preallocating memory for all NR_CPUS | |
209 | * when we use CPU hotplug. | |
210 | */ | |
dfac2189 AS |
211 | acpi_register_lapic(processor->id, /* APIC ID */ |
212 | processor->lapic_flags & ACPI_MADT_ENABLED); | |
1da177e4 LT |
213 | |
214 | return 0; | |
215 | } | |
216 | ||
ac049c1d JS |
217 | static int __init |
218 | acpi_parse_sapic(struct acpi_subtable_header *header, const unsigned long end) | |
219 | { | |
220 | struct acpi_madt_local_sapic *processor = NULL; | |
221 | ||
222 | processor = (struct acpi_madt_local_sapic *)header; | |
223 | ||
224 | if (BAD_MADT_ENTRY(processor, end)) | |
225 | return -EINVAL; | |
226 | ||
227 | acpi_table_print_madt_entry(header); | |
228 | ||
dfac2189 AS |
229 | acpi_register_lapic((processor->id << 8) | processor->eid,/* APIC ID */ |
230 | processor->lapic_flags & ACPI_MADT_ENABLED); | |
ac049c1d JS |
231 | |
232 | return 0; | |
233 | } | |
234 | ||
1da177e4 | 235 | static int __init |
5f3b1a8b | 236 | acpi_parse_lapic_addr_ovr(struct acpi_subtable_header * header, |
4be44fcd | 237 | const unsigned long end) |
1da177e4 | 238 | { |
5f3b1a8b | 239 | struct acpi_madt_local_apic_override *lapic_addr_ovr = NULL; |
1da177e4 | 240 | |
5f3b1a8b | 241 | lapic_addr_ovr = (struct acpi_madt_local_apic_override *)header; |
1da177e4 LT |
242 | |
243 | if (BAD_MADT_ENTRY(lapic_addr_ovr, end)) | |
244 | return -EINVAL; | |
245 | ||
246 | acpi_lapic_addr = lapic_addr_ovr->address; | |
247 | ||
248 | return 0; | |
249 | } | |
250 | ||
7237d3de SS |
251 | static int __init |
252 | acpi_parse_x2apic_nmi(struct acpi_subtable_header *header, | |
253 | const unsigned long end) | |
254 | { | |
255 | struct acpi_madt_local_x2apic_nmi *x2apic_nmi = NULL; | |
256 | ||
257 | x2apic_nmi = (struct acpi_madt_local_x2apic_nmi *)header; | |
258 | ||
259 | if (BAD_MADT_ENTRY(x2apic_nmi, end)) | |
260 | return -EINVAL; | |
261 | ||
262 | acpi_table_print_madt_entry(header); | |
263 | ||
264 | if (x2apic_nmi->lint != 1) | |
265 | printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n"); | |
266 | ||
267 | return 0; | |
268 | } | |
269 | ||
1da177e4 | 270 | static int __init |
5f3b1a8b | 271 | acpi_parse_lapic_nmi(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 272 | { |
5f3b1a8b | 273 | struct acpi_madt_local_apic_nmi *lapic_nmi = NULL; |
1da177e4 | 274 | |
5f3b1a8b | 275 | lapic_nmi = (struct acpi_madt_local_apic_nmi *)header; |
1da177e4 LT |
276 | |
277 | if (BAD_MADT_ENTRY(lapic_nmi, end)) | |
278 | return -EINVAL; | |
279 | ||
280 | acpi_table_print_madt_entry(header); | |
281 | ||
282 | if (lapic_nmi->lint != 1) | |
283 | printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n"); | |
284 | ||
285 | return 0; | |
286 | } | |
287 | ||
4be44fcd | 288 | #endif /*CONFIG_X86_LOCAL_APIC */ |
1da177e4 | 289 | |
8466361a | 290 | #ifdef CONFIG_X86_IO_APIC |
1da177e4 LT |
291 | |
292 | static int __init | |
5f3b1a8b | 293 | acpi_parse_ioapic(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 294 | { |
5f3b1a8b | 295 | struct acpi_madt_io_apic *ioapic = NULL; |
1da177e4 | 296 | |
5f3b1a8b | 297 | ioapic = (struct acpi_madt_io_apic *)header; |
1da177e4 LT |
298 | |
299 | if (BAD_MADT_ENTRY(ioapic, end)) | |
300 | return -EINVAL; | |
4be44fcd | 301 | |
1da177e4 LT |
302 | acpi_table_print_madt_entry(header); |
303 | ||
4be44fcd LB |
304 | mp_register_ioapic(ioapic->id, |
305 | ioapic->address, ioapic->global_irq_base); | |
306 | ||
1da177e4 LT |
307 | return 0; |
308 | } | |
309 | ||
310 | /* | |
311 | * Parse Interrupt Source Override for the ACPI SCI | |
312 | */ | |
e82c354b | 313 | static void __init acpi_sci_ioapic_setup(u32 gsi, u16 polarity, u16 trigger) |
1da177e4 LT |
314 | { |
315 | if (trigger == 0) /* compatible SCI trigger is level */ | |
316 | trigger = 3; | |
317 | ||
318 | if (polarity == 0) /* compatible SCI polarity is low */ | |
319 | polarity = 3; | |
320 | ||
321 | /* Command-line over-ride via acpi_sci= */ | |
5f3b1a8b AS |
322 | if (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) |
323 | trigger = (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) >> 2; | |
1da177e4 | 324 | |
5f3b1a8b AS |
325 | if (acpi_sci_flags & ACPI_MADT_POLARITY_MASK) |
326 | polarity = acpi_sci_flags & ACPI_MADT_POLARITY_MASK; | |
1da177e4 LT |
327 | |
328 | /* | |
4be44fcd | 329 | * mp_config_acpi_legacy_irqs() already setup IRQs < 16 |
1da177e4 LT |
330 | * If GSI is < 16, this will update its flags, |
331 | * else it will create a new mp_irqs[] entry. | |
332 | */ | |
7bdd21ce | 333 | mp_override_legacy_irq(gsi, polarity, trigger, gsi); |
1da177e4 LT |
334 | |
335 | /* | |
336 | * stash over-ride to indicate we've been here | |
cee324b1 | 337 | * and for later update of acpi_gbl_FADT |
1da177e4 | 338 | */ |
7bdd21ce | 339 | acpi_sci_override_gsi = gsi; |
1da177e4 LT |
340 | return; |
341 | } | |
342 | ||
343 | static int __init | |
5f3b1a8b | 344 | acpi_parse_int_src_ovr(struct acpi_subtable_header * header, |
4be44fcd | 345 | const unsigned long end) |
1da177e4 | 346 | { |
5f3b1a8b | 347 | struct acpi_madt_interrupt_override *intsrc = NULL; |
1da177e4 | 348 | |
5f3b1a8b | 349 | intsrc = (struct acpi_madt_interrupt_override *)header; |
1da177e4 LT |
350 | |
351 | if (BAD_MADT_ENTRY(intsrc, end)) | |
352 | return -EINVAL; | |
353 | ||
354 | acpi_table_print_madt_entry(header); | |
355 | ||
5f3b1a8b | 356 | if (intsrc->source_irq == acpi_gbl_FADT.sci_interrupt) { |
7bdd21ce | 357 | acpi_sci_ioapic_setup(intsrc->global_irq, |
5f3b1a8b AS |
358 | intsrc->inti_flags & ACPI_MADT_POLARITY_MASK, |
359 | (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2); | |
1da177e4 LT |
360 | return 0; |
361 | } | |
362 | ||
363 | if (acpi_skip_timer_override && | |
5f3b1a8b | 364 | intsrc->source_irq == 0 && intsrc->global_irq == 2) { |
4be44fcd LB |
365 | printk(PREFIX "BIOS IRQ0 pin2 override ignored.\n"); |
366 | return 0; | |
1da177e4 LT |
367 | } |
368 | ||
5f3b1a8b AS |
369 | mp_override_legacy_irq(intsrc->source_irq, |
370 | intsrc->inti_flags & ACPI_MADT_POLARITY_MASK, | |
371 | (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2, | |
372 | intsrc->global_irq); | |
1da177e4 LT |
373 | |
374 | return 0; | |
375 | } | |
376 | ||
1da177e4 | 377 | static int __init |
5f3b1a8b | 378 | acpi_parse_nmi_src(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 379 | { |
5f3b1a8b | 380 | struct acpi_madt_nmi_source *nmi_src = NULL; |
1da177e4 | 381 | |
5f3b1a8b | 382 | nmi_src = (struct acpi_madt_nmi_source *)header; |
1da177e4 LT |
383 | |
384 | if (BAD_MADT_ENTRY(nmi_src, end)) | |
385 | return -EINVAL; | |
386 | ||
387 | acpi_table_print_madt_entry(header); | |
388 | ||
389 | /* TBD: Support nimsrc entries? */ | |
390 | ||
391 | return 0; | |
392 | } | |
393 | ||
4be44fcd | 394 | #endif /* CONFIG_X86_IO_APIC */ |
1da177e4 | 395 | |
1da177e4 LT |
396 | /* |
397 | * acpi_pic_sci_set_trigger() | |
5f3b1a8b | 398 | * |
1da177e4 LT |
399 | * use ELCR to set PIC-mode trigger type for SCI |
400 | * | |
401 | * If a PIC-mode SCI is not recognized or gives spurious IRQ7's | |
402 | * it may require Edge Trigger -- use "acpi_sci=edge" | |
403 | * | |
404 | * Port 0x4d0-4d1 are ECLR1 and ECLR2, the Edge/Level Control Registers | |
405 | * for the 8259 PIC. bit[n] = 1 means irq[n] is Level, otherwise Edge. | |
27b46d76 SA |
406 | * ECLR1 is IRQs 0-7 (IRQ 0, 1, 2 must be 0) |
407 | * ECLR2 is IRQs 8-15 (IRQ 8, 13 must be 0) | |
1da177e4 LT |
408 | */ |
409 | ||
4be44fcd | 410 | void __init acpi_pic_sci_set_trigger(unsigned int irq, u16 trigger) |
1da177e4 LT |
411 | { |
412 | unsigned int mask = 1 << irq; | |
413 | unsigned int old, new; | |
414 | ||
415 | /* Real old ELCR mask */ | |
416 | old = inb(0x4d0) | (inb(0x4d1) << 8); | |
417 | ||
418 | /* | |
27b46d76 | 419 | * If we use ACPI to set PCI IRQs, then we should clear ELCR |
1da177e4 LT |
420 | * since we will set it correctly as we enable the PCI irq |
421 | * routing. | |
422 | */ | |
423 | new = acpi_noirq ? old : 0; | |
424 | ||
425 | /* | |
426 | * Update SCI information in the ELCR, it isn't in the PCI | |
427 | * routing tables.. | |
428 | */ | |
429 | switch (trigger) { | |
4be44fcd | 430 | case 1: /* Edge - clear */ |
1da177e4 LT |
431 | new &= ~mask; |
432 | break; | |
4be44fcd | 433 | case 3: /* Level - set */ |
1da177e4 LT |
434 | new |= mask; |
435 | break; | |
436 | } | |
437 | ||
438 | if (old == new) | |
439 | return; | |
440 | ||
441 | printk(PREFIX "setting ELCR to %04x (from %04x)\n", new, old); | |
442 | outb(new, 0x4d0); | |
443 | outb(new >> 8, 0x4d1); | |
444 | } | |
445 | ||
1da177e4 LT |
446 | int acpi_gsi_to_irq(u32 gsi, unsigned int *irq) |
447 | { | |
f023d764 | 448 | *irq = gsi; |
1da177e4 LT |
449 | return 0; |
450 | } | |
451 | ||
1f3a6a15 KK |
452 | /* |
453 | * success: return IRQ number (>=0) | |
454 | * failure: return < 0 | |
455 | */ | |
e5198075 | 456 | int acpi_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity) |
1da177e4 LT |
457 | { |
458 | unsigned int irq; | |
459 | unsigned int plat_gsi = gsi; | |
460 | ||
461 | #ifdef CONFIG_PCI | |
462 | /* | |
463 | * Make sure all (legacy) PCI IRQs are set as level-triggered. | |
464 | */ | |
465 | if (acpi_irq_model == ACPI_IRQ_MODEL_PIC) { | |
e5198075 | 466 | if (trigger == ACPI_LEVEL_SENSITIVE) |
4be44fcd | 467 | eisa_set_level_irq(gsi); |
1da177e4 LT |
468 | } |
469 | #endif | |
470 | ||
471 | #ifdef CONFIG_X86_IO_APIC | |
472 | if (acpi_irq_model == ACPI_IRQ_MODEL_IOAPIC) { | |
e5198075 | 473 | plat_gsi = mp_register_gsi(dev, gsi, trigger, polarity); |
1da177e4 LT |
474 | } |
475 | #endif | |
476 | acpi_gsi_to_irq(plat_gsi, &irq); | |
477 | return irq; | |
478 | } | |
4be44fcd | 479 | |
1da177e4 LT |
480 | /* |
481 | * ACPI based hotplug support for CPU | |
482 | */ | |
483 | #ifdef CONFIG_ACPI_HOTPLUG_CPU | |
009cbadb SR |
484 | |
485 | static int __cpuinit _acpi_map_lsapic(acpi_handle handle, int *pcpu) | |
1da177e4 | 486 | { |
73fea175 AR |
487 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
488 | union acpi_object *obj; | |
5f3b1a8b | 489 | struct acpi_madt_local_apic *lapic; |
ee943a82 | 490 | cpumask_var_t tmp_map, new_map; |
73fea175 AR |
491 | u8 physid; |
492 | int cpu; | |
ee943a82 | 493 | int retval = -ENOMEM; |
73fea175 AR |
494 | |
495 | if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer))) | |
496 | return -EINVAL; | |
497 | ||
498 | if (!buffer.length || !buffer.pointer) | |
499 | return -EINVAL; | |
500 | ||
501 | obj = buffer.pointer; | |
502 | if (obj->type != ACPI_TYPE_BUFFER || | |
503 | obj->buffer.length < sizeof(*lapic)) { | |
504 | kfree(buffer.pointer); | |
505 | return -EINVAL; | |
506 | } | |
507 | ||
5f3b1a8b | 508 | lapic = (struct acpi_madt_local_apic *)obj->buffer.pointer; |
73fea175 | 509 | |
5f3b1a8b AS |
510 | if (lapic->header.type != ACPI_MADT_TYPE_LOCAL_APIC || |
511 | !(lapic->lapic_flags & ACPI_MADT_ENABLED)) { | |
73fea175 AR |
512 | kfree(buffer.pointer); |
513 | return -EINVAL; | |
514 | } | |
515 | ||
516 | physid = lapic->id; | |
517 | ||
518 | kfree(buffer.pointer); | |
519 | buffer.length = ACPI_ALLOCATE_BUFFER; | |
520 | buffer.pointer = NULL; | |
521 | ||
ee943a82 RR |
522 | if (!alloc_cpumask_var(&tmp_map, GFP_KERNEL)) |
523 | goto out; | |
524 | ||
525 | if (!alloc_cpumask_var(&new_map, GFP_KERNEL)) | |
526 | goto free_tmp_map; | |
527 | ||
528 | cpumask_copy(tmp_map, cpu_present_mask); | |
dfac2189 | 529 | acpi_register_lapic(physid, lapic->lapic_flags & ACPI_MADT_ENABLED); |
73fea175 AR |
530 | |
531 | /* | |
532 | * If mp_register_lapic successfully generates a new logical cpu | |
533 | * number, then the following will get us exactly what was mapped | |
534 | */ | |
ee943a82 RR |
535 | cpumask_andnot(new_map, cpu_present_mask, tmp_map); |
536 | if (cpumask_empty(new_map)) { | |
73fea175 | 537 | printk ("Unable to map lapic to logical cpu number\n"); |
ee943a82 RR |
538 | retval = -EINVAL; |
539 | goto free_new_map; | |
73fea175 AR |
540 | } |
541 | ||
ee943a82 | 542 | cpu = cpumask_first(new_map); |
73fea175 AR |
543 | |
544 | *pcpu = cpu; | |
ee943a82 RR |
545 | retval = 0; |
546 | ||
547 | free_new_map: | |
548 | free_cpumask_var(new_map); | |
549 | free_tmp_map: | |
550 | free_cpumask_var(tmp_map); | |
551 | out: | |
552 | return retval; | |
1da177e4 | 553 | } |
1da177e4 | 554 | |
009cbadb SR |
555 | /* wrapper to silence section mismatch warning */ |
556 | int __ref acpi_map_lsapic(acpi_handle handle, int *pcpu) | |
557 | { | |
558 | return _acpi_map_lsapic(handle, pcpu); | |
559 | } | |
4be44fcd | 560 | EXPORT_SYMBOL(acpi_map_lsapic); |
1da177e4 | 561 | |
4be44fcd | 562 | int acpi_unmap_lsapic(int cpu) |
1da177e4 | 563 | { |
71fff5e6 | 564 | per_cpu(x86_cpu_to_apicid, cpu) = -1; |
9628937d | 565 | set_cpu_present(cpu, false); |
73fea175 AR |
566 | num_processors--; |
567 | ||
568 | return (0); | |
1da177e4 | 569 | } |
4be44fcd | 570 | |
1da177e4 | 571 | EXPORT_SYMBOL(acpi_unmap_lsapic); |
4be44fcd | 572 | #endif /* CONFIG_ACPI_HOTPLUG_CPU */ |
1da177e4 | 573 | |
4be44fcd | 574 | int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base) |
b1bb248a KK |
575 | { |
576 | /* TBD */ | |
577 | return -EINVAL; | |
578 | } | |
4be44fcd | 579 | |
b1bb248a KK |
580 | EXPORT_SYMBOL(acpi_register_ioapic); |
581 | ||
4be44fcd | 582 | int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base) |
b1bb248a KK |
583 | { |
584 | /* TBD */ | |
585 | return -EINVAL; | |
586 | } | |
4be44fcd | 587 | |
b1bb248a KK |
588 | EXPORT_SYMBOL(acpi_unregister_ioapic); |
589 | ||
5f3b1a8b | 590 | static int __init acpi_parse_sbf(struct acpi_table_header *table) |
1da177e4 | 591 | { |
5f3b1a8b | 592 | struct acpi_table_boot *sb; |
1da177e4 | 593 | |
5f3b1a8b | 594 | sb = (struct acpi_table_boot *)table; |
1da177e4 LT |
595 | if (!sb) { |
596 | printk(KERN_WARNING PREFIX "Unable to map SBF\n"); | |
597 | return -ENODEV; | |
598 | } | |
599 | ||
5f3b1a8b | 600 | sbf_port = sb->cmos_index; /* Save CMOS port */ |
1da177e4 LT |
601 | |
602 | return 0; | |
603 | } | |
604 | ||
1da177e4 | 605 | #ifdef CONFIG_HPET_TIMER |
2d0c87c3 | 606 | #include <asm/hpet.h> |
1da177e4 | 607 | |
a1dfd851 AD |
608 | static struct __initdata resource *hpet_res; |
609 | ||
5f3b1a8b | 610 | static int __init acpi_parse_hpet(struct acpi_table_header *table) |
1da177e4 LT |
611 | { |
612 | struct acpi_table_hpet *hpet_tbl; | |
613 | ||
5f3b1a8b | 614 | hpet_tbl = (struct acpi_table_hpet *)table; |
1da177e4 LT |
615 | if (!hpet_tbl) { |
616 | printk(KERN_WARNING PREFIX "Unable to map HPET\n"); | |
617 | return -ENODEV; | |
618 | } | |
619 | ||
ad363f80 | 620 | if (hpet_tbl->address.space_id != ACPI_SPACE_MEM) { |
1da177e4 LT |
621 | printk(KERN_WARNING PREFIX "HPET timers must be located in " |
622 | "memory.\n"); | |
623 | return -1; | |
624 | } | |
f0f4c343 | 625 | |
2d0c87c3 | 626 | hpet_address = hpet_tbl->address.address; |
c8bc6f3c | 627 | hpet_blockid = hpet_tbl->sequence; |
f4df73c2 TG |
628 | |
629 | /* | |
630 | * Some broken BIOSes advertise HPET at 0x0. We really do not | |
631 | * want to allocate a resource there. | |
632 | */ | |
633 | if (!hpet_address) { | |
634 | printk(KERN_WARNING PREFIX | |
635 | "HPET id: %#x base: %#lx is invalid\n", | |
636 | hpet_tbl->id, hpet_address); | |
637 | return 0; | |
638 | } | |
639 | #ifdef CONFIG_X86_64 | |
640 | /* | |
641 | * Some even more broken BIOSes advertise HPET at | |
642 | * 0xfed0000000000000 instead of 0xfed00000. Fix it up and add | |
643 | * some noise: | |
644 | */ | |
645 | if (hpet_address == 0xfed0000000000000UL) { | |
646 | if (!hpet_force_user) { | |
647 | printk(KERN_WARNING PREFIX "HPET id: %#x " | |
648 | "base: 0xfed0000000000000 is bogus\n " | |
649 | "try hpet=force on the kernel command line to " | |
650 | "fix it up to 0xfed00000.\n", hpet_tbl->id); | |
651 | hpet_address = 0; | |
652 | return 0; | |
653 | } | |
654 | printk(KERN_WARNING PREFIX | |
655 | "HPET id: %#x base: 0xfed0000000000000 fixed up " | |
656 | "to 0xfed00000.\n", hpet_tbl->id); | |
657 | hpet_address >>= 32; | |
658 | } | |
659 | #endif | |
4be44fcd | 660 | printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n", |
2d0c87c3 | 661 | hpet_tbl->id, hpet_address); |
1da177e4 | 662 | |
a1dfd851 AD |
663 | /* |
664 | * Allocate and initialize the HPET firmware resource for adding into | |
665 | * the resource tree during the lateinit timeframe. | |
666 | */ | |
667 | #define HPET_RESOURCE_NAME_SIZE 9 | |
668 | hpet_res = alloc_bootmem(sizeof(*hpet_res) + HPET_RESOURCE_NAME_SIZE); | |
669 | ||
a1dfd851 AD |
670 | hpet_res->name = (void *)&hpet_res[1]; |
671 | hpet_res->flags = IORESOURCE_MEM; | |
672 | snprintf((char *)hpet_res->name, HPET_RESOURCE_NAME_SIZE, "HPET %u", | |
673 | hpet_tbl->sequence); | |
674 | ||
675 | hpet_res->start = hpet_address; | |
676 | hpet_res->end = hpet_address + (1 * 1024) - 1; | |
677 | ||
1da177e4 LT |
678 | return 0; |
679 | } | |
a1dfd851 AD |
680 | |
681 | /* | |
682 | * hpet_insert_resource inserts the HPET resources used into the resource | |
683 | * tree. | |
684 | */ | |
685 | static __init int hpet_insert_resource(void) | |
686 | { | |
687 | if (!hpet_res) | |
688 | return 1; | |
689 | ||
690 | return insert_resource(&iomem_resource, hpet_res); | |
691 | } | |
692 | ||
693 | late_initcall(hpet_insert_resource); | |
694 | ||
1da177e4 LT |
695 | #else |
696 | #define acpi_parse_hpet NULL | |
697 | #endif | |
698 | ||
5f3b1a8b | 699 | static int __init acpi_parse_fadt(struct acpi_table_header *table) |
1da177e4 | 700 | { |
90660ec3 | 701 | |
1da177e4 LT |
702 | #ifdef CONFIG_X86_PM_TIMER |
703 | /* detect the location of the ACPI PM Timer */ | |
5f3b1a8b | 704 | if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID) { |
1da177e4 | 705 | /* FADT rev. 2 */ |
5f3b1a8b | 706 | if (acpi_gbl_FADT.xpm_timer_block.space_id != |
4be44fcd | 707 | ACPI_ADR_SPACE_SYSTEM_IO) |
1da177e4 LT |
708 | return 0; |
709 | ||
5f3b1a8b | 710 | pmtmr_ioport = acpi_gbl_FADT.xpm_timer_block.address; |
e6e87b4b DSL |
711 | /* |
712 | * "X" fields are optional extensions to the original V1.0 | |
713 | * fields, so we must selectively expand V1.0 fields if the | |
714 | * corresponding X field is zero. | |
715 | */ | |
716 | if (!pmtmr_ioport) | |
5f3b1a8b | 717 | pmtmr_ioport = acpi_gbl_FADT.pm_timer_block; |
1da177e4 LT |
718 | } else { |
719 | /* FADT rev. 1 */ | |
5f3b1a8b | 720 | pmtmr_ioport = acpi_gbl_FADT.pm_timer_block; |
1da177e4 LT |
721 | } |
722 | if (pmtmr_ioport) | |
4be44fcd LB |
723 | printk(KERN_INFO PREFIX "PM-Timer IO Port: %#x\n", |
724 | pmtmr_ioport); | |
1da177e4 LT |
725 | #endif |
726 | return 0; | |
727 | } | |
728 | ||
1da177e4 LT |
729 | #ifdef CONFIG_X86_LOCAL_APIC |
730 | /* | |
731 | * Parse LAPIC entries in MADT | |
732 | * returns 0 on success, < 0 on error | |
733 | */ | |
31d2092e AS |
734 | |
735 | static void __init acpi_register_lapic_address(unsigned long address) | |
736 | { | |
737 | mp_lapic_addr = address; | |
738 | ||
739 | set_fixmap_nocache(FIX_APIC_BASE, address); | |
fb3bbd6a | 740 | if (boot_cpu_physical_apicid == -1U) { |
4c9961d5 | 741 | boot_cpu_physical_apicid = read_apic_id(); |
fb3bbd6a YL |
742 | apic_version[boot_cpu_physical_apicid] = |
743 | GET_APIC_VERSION(apic_read(APIC_LVR)); | |
fb3bbd6a | 744 | } |
31d2092e AS |
745 | } |
746 | ||
cbf9bd60 YL |
747 | static int __init early_acpi_parse_madt_lapic_addr_ovr(void) |
748 | { | |
749 | int count; | |
750 | ||
751 | if (!cpu_has_apic) | |
752 | return -ENODEV; | |
753 | ||
754 | /* | |
755 | * Note that the LAPIC address is obtained from the MADT (32-bit value) | |
756 | * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value). | |
757 | */ | |
758 | ||
759 | count = | |
760 | acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE, | |
761 | acpi_parse_lapic_addr_ovr, 0); | |
762 | if (count < 0) { | |
763 | printk(KERN_ERR PREFIX | |
764 | "Error parsing LAPIC address override entry\n"); | |
765 | return count; | |
766 | } | |
767 | ||
768 | acpi_register_lapic_address(acpi_lapic_addr); | |
769 | ||
770 | return count; | |
771 | } | |
772 | ||
4be44fcd | 773 | static int __init acpi_parse_madt_lapic_entries(void) |
1da177e4 LT |
774 | { |
775 | int count; | |
7237d3de | 776 | int x2count = 0; |
1da177e4 | 777 | |
0fcd2709 AK |
778 | if (!cpu_has_apic) |
779 | return -ENODEV; | |
780 | ||
5f3b1a8b | 781 | /* |
1da177e4 LT |
782 | * Note that the LAPIC address is obtained from the MADT (32-bit value) |
783 | * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value). | |
784 | */ | |
785 | ||
4be44fcd | 786 | count = |
5f3b1a8b | 787 | acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE, |
4be44fcd | 788 | acpi_parse_lapic_addr_ovr, 0); |
1da177e4 | 789 | if (count < 0) { |
4be44fcd LB |
790 | printk(KERN_ERR PREFIX |
791 | "Error parsing LAPIC address override entry\n"); | |
1da177e4 LT |
792 | return count; |
793 | } | |
794 | ||
31d2092e | 795 | acpi_register_lapic_address(acpi_lapic_addr); |
1da177e4 | 796 | |
ac049c1d JS |
797 | count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_SAPIC, |
798 | acpi_parse_sapic, MAX_APICS); | |
799 | ||
7237d3de SS |
800 | if (!count) { |
801 | x2count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC, | |
802 | acpi_parse_x2apic, MAX_APICS); | |
ac049c1d JS |
803 | count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC, |
804 | acpi_parse_lapic, MAX_APICS); | |
7237d3de SS |
805 | } |
806 | if (!count && !x2count) { | |
1da177e4 LT |
807 | printk(KERN_ERR PREFIX "No LAPIC entries present\n"); |
808 | /* TBD: Cleanup to allow fallback to MPS */ | |
809 | return -ENODEV; | |
7237d3de | 810 | } else if (count < 0 || x2count < 0) { |
1da177e4 LT |
811 | printk(KERN_ERR PREFIX "Error parsing LAPIC entry\n"); |
812 | /* TBD: Cleanup to allow fallback to MPS */ | |
813 | return count; | |
814 | } | |
815 | ||
7237d3de SS |
816 | x2count = |
817 | acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC_NMI, | |
818 | acpi_parse_x2apic_nmi, 0); | |
4be44fcd | 819 | count = |
5f3b1a8b | 820 | acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI, acpi_parse_lapic_nmi, 0); |
7237d3de | 821 | if (count < 0 || x2count < 0) { |
1da177e4 LT |
822 | printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n"); |
823 | /* TBD: Cleanup to allow fallback to MPS */ | |
824 | return count; | |
825 | } | |
826 | return 0; | |
827 | } | |
4be44fcd | 828 | #endif /* CONFIG_X86_LOCAL_APIC */ |
1da177e4 | 829 | |
8466361a | 830 | #ifdef CONFIG_X86_IO_APIC |
11113f84 AS |
831 | #define MP_ISA_BUS 0 |
832 | ||
d49c4288 | 833 | #ifdef CONFIG_X86_ES7000 |
11113f84 AS |
834 | extern int es7000_plat; |
835 | #endif | |
836 | ||
3f4a739c YL |
837 | int __init acpi_probe_gsi(void) |
838 | { | |
839 | int idx; | |
840 | int gsi; | |
841 | int max_gsi = 0; | |
842 | ||
843 | if (acpi_disabled) | |
844 | return 0; | |
845 | ||
846 | if (!acpi_ioapic) | |
847 | return 0; | |
848 | ||
849 | max_gsi = 0; | |
850 | for (idx = 0; idx < nr_ioapics; idx++) { | |
2a4ab640 | 851 | gsi = mp_gsi_routing[idx].gsi_end; |
3f4a739c YL |
852 | |
853 | if (gsi > max_gsi) | |
854 | max_gsi = gsi; | |
855 | } | |
856 | ||
857 | return max_gsi + 1; | |
858 | } | |
859 | ||
c2c21745 JSR |
860 | static void assign_to_mp_irq(struct mpc_intsrc *m, |
861 | struct mpc_intsrc *mp_irq) | |
fcfa146e | 862 | { |
c2c21745 | 863 | memcpy(mp_irq, m, sizeof(struct mpc_intsrc)); |
fcfa146e YL |
864 | } |
865 | ||
c2c21745 JSR |
866 | static int mp_irq_cmp(struct mpc_intsrc *mp_irq, |
867 | struct mpc_intsrc *m) | |
fcfa146e | 868 | { |
c2c21745 | 869 | return memcmp(mp_irq, m, sizeof(struct mpc_intsrc)); |
fcfa146e YL |
870 | } |
871 | ||
c2c21745 | 872 | static void save_mp_irq(struct mpc_intsrc *m) |
fcfa146e YL |
873 | { |
874 | int i; | |
875 | ||
876 | for (i = 0; i < mp_irq_entries; i++) { | |
877 | if (!mp_irq_cmp(&mp_irqs[i], m)) | |
878 | return; | |
879 | } | |
880 | ||
881 | assign_to_mp_irq(m, &mp_irqs[mp_irq_entries]); | |
882 | if (++mp_irq_entries == MAX_IRQ_SOURCES) | |
883 | panic("Max # of irq sources exceeded!!\n"); | |
884 | } | |
885 | ||
11113f84 AS |
886 | void __init mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger, u32 gsi) |
887 | { | |
6df8809b YL |
888 | int ioapic; |
889 | int pin; | |
c2c21745 | 890 | struct mpc_intsrc mp_irq; |
11113f84 AS |
891 | |
892 | /* | |
893 | * Convert 'gsi' to 'ioapic.pin'. | |
894 | */ | |
895 | ioapic = mp_find_ioapic(gsi); | |
896 | if (ioapic < 0) | |
897 | return; | |
c3e137d1 | 898 | pin = mp_find_ioapic_pin(ioapic, gsi); |
11113f84 AS |
899 | |
900 | /* | |
901 | * TBD: This check is for faulty timer entries, where the override | |
902 | * erroneously sets the trigger to level, resulting in a HUGE | |
903 | * increase of timer interrupts! | |
904 | */ | |
905 | if ((bus_irq == 0) && (trigger == 3)) | |
906 | trigger = 1; | |
907 | ||
c2c21745 JSR |
908 | mp_irq.type = MP_INTSRC; |
909 | mp_irq.irqtype = mp_INT; | |
910 | mp_irq.irqflag = (trigger << 2) | polarity; | |
911 | mp_irq.srcbus = MP_ISA_BUS; | |
912 | mp_irq.srcbusirq = bus_irq; /* IRQ */ | |
913 | mp_irq.dstapic = mp_ioapics[ioapic].apicid; /* APIC ID */ | |
914 | mp_irq.dstirq = pin; /* INTIN# */ | |
11113f84 | 915 | |
fcfa146e | 916 | save_mp_irq(&mp_irq); |
11113f84 AS |
917 | } |
918 | ||
919 | void __init mp_config_acpi_legacy_irqs(void) | |
920 | { | |
6df8809b YL |
921 | int i; |
922 | int ioapic; | |
923 | unsigned int dstapic; | |
c2c21745 | 924 | struct mpc_intsrc mp_irq; |
11113f84 AS |
925 | |
926 | #if defined (CONFIG_MCA) || defined (CONFIG_EISA) | |
927 | /* | |
928 | * Fabricate the legacy ISA bus (bus #31). | |
929 | */ | |
930 | mp_bus_id_to_type[MP_ISA_BUS] = MP_BUS_ISA; | |
931 | #endif | |
932 | set_bit(MP_ISA_BUS, mp_bus_not_pci); | |
cfc1b9a6 | 933 | pr_debug("Bus #%d is ISA\n", MP_ISA_BUS); |
11113f84 | 934 | |
d49c4288 | 935 | #ifdef CONFIG_X86_ES7000 |
11113f84 AS |
936 | /* |
937 | * Older generations of ES7000 have no legacy identity mappings | |
938 | */ | |
939 | if (es7000_plat == 1) | |
940 | return; | |
941 | #endif | |
942 | ||
943 | /* | |
944 | * Locate the IOAPIC that manages the ISA IRQs (0-15). | |
945 | */ | |
946 | ioapic = mp_find_ioapic(0); | |
947 | if (ioapic < 0) | |
948 | return; | |
b5ba7e6d | 949 | dstapic = mp_ioapics[ioapic].apicid; |
11113f84 | 950 | |
11113f84 AS |
951 | /* |
952 | * Use the default configuration for the IRQs 0-15. Unless | |
953 | * overridden by (MADT) interrupt source override entries. | |
954 | */ | |
955 | for (i = 0; i < 16; i++) { | |
956 | int idx; | |
957 | ||
958 | for (idx = 0; idx < mp_irq_entries; idx++) { | |
c2c21745 | 959 | struct mpc_intsrc *irq = mp_irqs + idx; |
11113f84 AS |
960 | |
961 | /* Do we already have a mapping for this ISA IRQ? */ | |
c2c21745 | 962 | if (irq->srcbus == MP_ISA_BUS && irq->srcbusirq == i) |
11113f84 AS |
963 | break; |
964 | ||
965 | /* Do we already have a mapping for this IOAPIC pin */ | |
c2c21745 | 966 | if (irq->dstapic == dstapic && irq->dstirq == i) |
11113f84 AS |
967 | break; |
968 | } | |
969 | ||
970 | if (idx != mp_irq_entries) { | |
971 | printk(KERN_DEBUG "ACPI: IRQ%d used by override.\n", i); | |
972 | continue; /* IRQ already used */ | |
973 | } | |
974 | ||
c2c21745 JSR |
975 | mp_irq.type = MP_INTSRC; |
976 | mp_irq.irqflag = 0; /* Conforming */ | |
977 | mp_irq.srcbus = MP_ISA_BUS; | |
978 | mp_irq.dstapic = dstapic; | |
979 | mp_irq.irqtype = mp_INT; | |
980 | mp_irq.srcbusirq = i; /* Identity mapped */ | |
981 | mp_irq.dstirq = i; | |
11113f84 | 982 | |
fcfa146e | 983 | save_mp_irq(&mp_irq); |
11113f84 AS |
984 | } |
985 | } | |
986 | ||
e5198075 | 987 | static int mp_config_acpi_gsi(struct device *dev, u32 gsi, int trigger, |
a31f8205 YL |
988 | int polarity) |
989 | { | |
990 | #ifdef CONFIG_X86_MPPARSE | |
991 | struct mpc_intsrc mp_irq; | |
992 | struct pci_dev *pdev; | |
993 | unsigned char number; | |
994 | unsigned int devfn; | |
995 | int ioapic; | |
996 | u8 pin; | |
997 | ||
998 | if (!acpi_ioapic) | |
999 | return 0; | |
1000 | if (!dev) | |
1001 | return 0; | |
1002 | if (dev->bus != &pci_bus_type) | |
1003 | return 0; | |
1004 | ||
1005 | pdev = to_pci_dev(dev); | |
1006 | number = pdev->bus->number; | |
1007 | devfn = pdev->devfn; | |
1008 | pin = pdev->pin; | |
1009 | /* print the entry should happen on mptable identically */ | |
1010 | mp_irq.type = MP_INTSRC; | |
1011 | mp_irq.irqtype = mp_INT; | |
e5198075 | 1012 | mp_irq.irqflag = (trigger == ACPI_EDGE_SENSITIVE ? 4 : 0x0c) | |
a31f8205 YL |
1013 | (polarity == ACPI_ACTIVE_HIGH ? 1 : 3); |
1014 | mp_irq.srcbus = number; | |
1015 | mp_irq.srcbusirq = (((devfn >> 3) & 0x1f) << 2) | ((pin - 1) & 3); | |
1016 | ioapic = mp_find_ioapic(gsi); | |
bdfe8ac1 | 1017 | mp_irq.dstapic = mp_ioapics[ioapic].apicid; |
a31f8205 YL |
1018 | mp_irq.dstirq = mp_find_ioapic_pin(ioapic, gsi); |
1019 | ||
1020 | save_mp_irq(&mp_irq); | |
1021 | #endif | |
1022 | return 0; | |
1023 | } | |
1024 | ||
e5198075 | 1025 | int mp_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity) |
11113f84 AS |
1026 | { |
1027 | int ioapic; | |
1028 | int ioapic_pin; | |
e5198075 | 1029 | struct io_apic_irq_attr irq_attr; |
11113f84 AS |
1030 | |
1031 | if (acpi_irq_model != ACPI_IRQ_MODEL_IOAPIC) | |
1032 | return gsi; | |
11113f84 AS |
1033 | |
1034 | /* Don't set up the ACPI SCI because it's already set up */ | |
1035 | if (acpi_gbl_FADT.sci_interrupt == gsi) | |
1036 | return gsi; | |
1037 | ||
1038 | ioapic = mp_find_ioapic(gsi); | |
1039 | if (ioapic < 0) { | |
1040 | printk(KERN_WARNING "No IOAPIC for GSI %u\n", gsi); | |
1041 | return gsi; | |
1042 | } | |
1043 | ||
c3e137d1 | 1044 | ioapic_pin = mp_find_ioapic_pin(ioapic, gsi); |
11113f84 AS |
1045 | |
1046 | #ifdef CONFIG_X86_32 | |
1047 | if (ioapic_renumber_irq) | |
1048 | gsi = ioapic_renumber_irq(ioapic, gsi); | |
1049 | #endif | |
1050 | ||
11113f84 AS |
1051 | if (ioapic_pin > MP_MAX_IOAPIC_PIN) { |
1052 | printk(KERN_ERR "Invalid reference to IOAPIC pin " | |
bdfe8ac1 | 1053 | "%d-%d\n", mp_ioapics[ioapic].apicid, |
11113f84 AS |
1054 | ioapic_pin); |
1055 | return gsi; | |
1056 | } | |
f1bdb523 YL |
1057 | |
1058 | if (enable_update_mptable) | |
1059 | mp_config_acpi_gsi(dev, gsi, trigger, polarity); | |
b9e0353f | 1060 | |
e5198075 YL |
1061 | set_io_apic_irq_attr(&irq_attr, ioapic, ioapic_pin, |
1062 | trigger == ACPI_EDGE_SENSITIVE ? 0 : 1, | |
1063 | polarity == ACPI_ACTIVE_HIGH ? 0 : 1); | |
1064 | io_apic_set_pci_routing(dev, gsi, &irq_attr); | |
b9e0353f | 1065 | |
11113f84 AS |
1066 | return gsi; |
1067 | } | |
1068 | ||
1da177e4 LT |
1069 | /* |
1070 | * Parse IOAPIC related entries in MADT | |
1071 | * returns 0 on success, < 0 on error | |
1072 | */ | |
4be44fcd | 1073 | static int __init acpi_parse_madt_ioapic_entries(void) |
1da177e4 LT |
1074 | { |
1075 | int count; | |
1076 | ||
1077 | /* | |
1078 | * ACPI interpreter is required to complete interrupt setup, | |
1079 | * so if it is off, don't enumerate the io-apics with ACPI. | |
1080 | * If MPS is present, it will handle them, | |
1081 | * otherwise the system will stay in PIC mode | |
1082 | */ | |
6b2b171a | 1083 | if (acpi_disabled || acpi_noirq) |
1da177e4 | 1084 | return -ENODEV; |
1da177e4 | 1085 | |
5f3b1a8b | 1086 | if (!cpu_has_apic) |
d3b6a349 AK |
1087 | return -ENODEV; |
1088 | ||
1da177e4 | 1089 | /* |
4be44fcd | 1090 | * if "noapic" boot option, don't look for IO-APICs |
1da177e4 LT |
1091 | */ |
1092 | if (skip_ioapic_setup) { | |
1093 | printk(KERN_INFO PREFIX "Skipping IOAPIC probe " | |
4be44fcd | 1094 | "due to 'noapic' option.\n"); |
1da177e4 LT |
1095 | return -ENODEV; |
1096 | } | |
1097 | ||
4be44fcd | 1098 | count = |
5f3b1a8b | 1099 | acpi_table_parse_madt(ACPI_MADT_TYPE_IO_APIC, acpi_parse_ioapic, |
4be44fcd | 1100 | MAX_IO_APICS); |
1da177e4 LT |
1101 | if (!count) { |
1102 | printk(KERN_ERR PREFIX "No IOAPIC entries present\n"); | |
1103 | return -ENODEV; | |
4be44fcd | 1104 | } else if (count < 0) { |
1da177e4 LT |
1105 | printk(KERN_ERR PREFIX "Error parsing IOAPIC entry\n"); |
1106 | return count; | |
1107 | } | |
1108 | ||
4be44fcd | 1109 | count = |
5f3b1a8b | 1110 | acpi_table_parse_madt(ACPI_MADT_TYPE_INTERRUPT_OVERRIDE, acpi_parse_int_src_ovr, |
71f521bb | 1111 | nr_irqs); |
1da177e4 | 1112 | if (count < 0) { |
4be44fcd LB |
1113 | printk(KERN_ERR PREFIX |
1114 | "Error parsing interrupt source overrides entry\n"); | |
1da177e4 LT |
1115 | /* TBD: Cleanup to allow fallback to MPS */ |
1116 | return count; | |
1117 | } | |
1118 | ||
1119 | /* | |
1120 | * If BIOS did not supply an INT_SRC_OVR for the SCI | |
1121 | * pretend we got one so we can set the SCI flags. | |
1122 | */ | |
1123 | if (!acpi_sci_override_gsi) | |
cee324b1 | 1124 | acpi_sci_ioapic_setup(acpi_gbl_FADT.sci_interrupt, 0, 0); |
1da177e4 | 1125 | |
af901ca1 | 1126 | /* Fill in identity legacy mappings where no override */ |
1da177e4 LT |
1127 | mp_config_acpi_legacy_irqs(); |
1128 | ||
4be44fcd | 1129 | count = |
5f3b1a8b | 1130 | acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE, acpi_parse_nmi_src, |
71f521bb | 1131 | nr_irqs); |
1da177e4 LT |
1132 | if (count < 0) { |
1133 | printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n"); | |
1134 | /* TBD: Cleanup to allow fallback to MPS */ | |
1135 | return count; | |
1136 | } | |
1137 | ||
1138 | return 0; | |
1139 | } | |
1140 | #else | |
1141 | static inline int acpi_parse_madt_ioapic_entries(void) | |
1142 | { | |
1143 | return -1; | |
1144 | } | |
8466361a | 1145 | #endif /* !CONFIG_X86_IO_APIC */ |
1da177e4 | 1146 | |
cbf9bd60 YL |
1147 | static void __init early_acpi_process_madt(void) |
1148 | { | |
1149 | #ifdef CONFIG_X86_LOCAL_APIC | |
1150 | int error; | |
1151 | ||
1152 | if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) { | |
1153 | ||
1154 | /* | |
1155 | * Parse MADT LAPIC entries | |
1156 | */ | |
1157 | error = early_acpi_parse_madt_lapic_addr_ovr(); | |
1158 | if (!error) { | |
1159 | acpi_lapic = 1; | |
1160 | smp_found_config = 1; | |
1161 | } | |
1162 | if (error == -EINVAL) { | |
1163 | /* | |
1164 | * Dell Precision Workstation 410, 610 come here. | |
1165 | */ | |
1166 | printk(KERN_ERR PREFIX | |
1167 | "Invalid BIOS MADT, disabling ACPI\n"); | |
1168 | disable_acpi(); | |
1169 | } | |
1170 | } | |
1171 | #endif | |
1172 | } | |
1173 | ||
4be44fcd | 1174 | static void __init acpi_process_madt(void) |
1da177e4 LT |
1175 | { |
1176 | #ifdef CONFIG_X86_LOCAL_APIC | |
7f8f97c3 | 1177 | int error; |
1da177e4 | 1178 | |
7f8f97c3 | 1179 | if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) { |
1da177e4 LT |
1180 | |
1181 | /* | |
1182 | * Parse MADT LAPIC entries | |
1183 | */ | |
1184 | error = acpi_parse_madt_lapic_entries(); | |
1185 | if (!error) { | |
1186 | acpi_lapic = 1; | |
1187 | ||
26f7ef14 | 1188 | #ifdef CONFIG_X86_BIGSMP |
911a62d4 VP |
1189 | generic_bigsmp_probe(); |
1190 | #endif | |
1da177e4 LT |
1191 | /* |
1192 | * Parse MADT IO-APIC entries | |
1193 | */ | |
1194 | error = acpi_parse_madt_ioapic_entries(); | |
1195 | if (!error) { | |
1196 | acpi_irq_model = ACPI_IRQ_MODEL_IOAPIC; | |
1da177e4 LT |
1197 | acpi_ioapic = 1; |
1198 | ||
1199 | smp_found_config = 1; | |
72ce0165 IM |
1200 | if (apic->setup_apic_routing) |
1201 | apic->setup_apic_routing(); | |
1da177e4 LT |
1202 | } |
1203 | } | |
1204 | if (error == -EINVAL) { | |
1205 | /* | |
1206 | * Dell Precision Workstation 410, 610 come here. | |
1207 | */ | |
4be44fcd LB |
1208 | printk(KERN_ERR PREFIX |
1209 | "Invalid BIOS MADT, disabling ACPI\n"); | |
1da177e4 LT |
1210 | disable_acpi(); |
1211 | } | |
7b37b5fd LB |
1212 | } else { |
1213 | /* | |
1214 | * ACPI found no MADT, and so ACPI wants UP PIC mode. | |
1215 | * In the event an MPS table was found, forget it. | |
1216 | * Boot with "acpi=off" to use MPS on such a system. | |
1217 | */ | |
1218 | if (smp_found_config) { | |
1219 | printk(KERN_WARNING PREFIX | |
1220 | "No APIC-table, disabling MPS\n"); | |
1221 | smp_found_config = 0; | |
1222 | } | |
1da177e4 | 1223 | } |
69b88afa YL |
1224 | |
1225 | /* | |
1226 | * ACPI supports both logical (e.g. Hyper-Threading) and physical | |
1227 | * processors, where MPS only supports physical. | |
1228 | */ | |
1229 | if (acpi_lapic && acpi_ioapic) | |
1230 | printk(KERN_INFO "Using ACPI (MADT) for SMP configuration " | |
1231 | "information\n"); | |
1232 | else if (acpi_lapic) | |
1233 | printk(KERN_INFO "Using ACPI for processor (LAPIC) " | |
1234 | "configuration information\n"); | |
1da177e4 LT |
1235 | #endif |
1236 | return; | |
1237 | } | |
1238 | ||
1855256c | 1239 | static int __init disable_acpi_irq(const struct dmi_system_id *d) |
aea00143 AP |
1240 | { |
1241 | if (!acpi_force) { | |
1242 | printk(KERN_NOTICE "%s detected: force use of acpi=noirq\n", | |
1243 | d->ident); | |
1244 | acpi_noirq_set(); | |
1245 | } | |
1246 | return 0; | |
1247 | } | |
1248 | ||
1855256c | 1249 | static int __init disable_acpi_pci(const struct dmi_system_id *d) |
aea00143 AP |
1250 | { |
1251 | if (!acpi_force) { | |
1252 | printk(KERN_NOTICE "%s detected: force use of pci=noacpi\n", | |
1253 | d->ident); | |
1254 | acpi_disable_pci(); | |
1255 | } | |
1256 | return 0; | |
1257 | } | |
aea00143 | 1258 | |
1855256c | 1259 | static int __init dmi_disable_acpi(const struct dmi_system_id *d) |
aea00143 AP |
1260 | { |
1261 | if (!acpi_force) { | |
4be44fcd | 1262 | printk(KERN_NOTICE "%s detected: acpi off\n", d->ident); |
aea00143 AP |
1263 | disable_acpi(); |
1264 | } else { | |
1265 | printk(KERN_NOTICE | |
1266 | "Warning: DMI blacklist says broken, but acpi forced\n"); | |
1267 | } | |
1268 | return 0; | |
1269 | } | |
1270 | ||
1271 | /* | |
1272 | * Limit ACPI to CPU enumeration for HT | |
1273 | */ | |
1855256c | 1274 | static int __init force_acpi_ht(const struct dmi_system_id *d) |
aea00143 AP |
1275 | { |
1276 | if (!acpi_force) { | |
4be44fcd LB |
1277 | printk(KERN_NOTICE "%s detected: force use of acpi=ht\n", |
1278 | d->ident); | |
aea00143 AP |
1279 | disable_acpi(); |
1280 | acpi_ht = 1; | |
1281 | } else { | |
1282 | printk(KERN_NOTICE | |
1283 | "Warning: acpi=force overrules DMI blacklist: acpi=ht\n"); | |
1284 | } | |
1285 | return 0; | |
1286 | } | |
1287 | ||
e2079c43 RW |
1288 | /* |
1289 | * Force ignoring BIOS IRQ0 pin2 override | |
1290 | */ | |
1291 | static int __init dmi_ignore_irq0_timer_override(const struct dmi_system_id *d) | |
1292 | { | |
8d89adf4 IM |
1293 | /* |
1294 | * The ati_ixp4x0_rev() early PCI quirk should have set | |
1295 | * the acpi_skip_timer_override flag already: | |
1296 | */ | |
1297 | if (!acpi_skip_timer_override) { | |
1298 | WARN(1, KERN_ERR "ati_ixp4x0 quirk not complete.\n"); | |
1299 | pr_notice("%s detected: Ignoring BIOS IRQ0 pin2 override\n", | |
1300 | d->ident); | |
1301 | acpi_skip_timer_override = 1; | |
1302 | } | |
e2079c43 RW |
1303 | return 0; |
1304 | } | |
1305 | ||
aea00143 AP |
1306 | /* |
1307 | * If your system is blacklisted here, but you find that acpi=force | |
5b4c0b6f | 1308 | * works for you, please contact linux-acpi@vger.kernel.org |
aea00143 AP |
1309 | */ |
1310 | static struct dmi_system_id __initdata acpi_dmi_table[] = { | |
1311 | /* | |
1312 | * Boxes that need ACPI disabled | |
1313 | */ | |
1314 | { | |
4be44fcd LB |
1315 | .callback = dmi_disable_acpi, |
1316 | .ident = "IBM Thinkpad", | |
1317 | .matches = { | |
1318 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), | |
1319 | DMI_MATCH(DMI_BOARD_NAME, "2629H1G"), | |
1320 | }, | |
1321 | }, | |
aea00143 AP |
1322 | |
1323 | /* | |
1324 | * Boxes that need acpi=ht | |
1325 | */ | |
1326 | { | |
4be44fcd LB |
1327 | .callback = force_acpi_ht, |
1328 | .ident = "FSC Primergy T850", | |
1329 | .matches = { | |
1330 | DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), | |
1331 | DMI_MATCH(DMI_PRODUCT_NAME, "PRIMERGY T850"), | |
1332 | }, | |
1333 | }, | |
aea00143 | 1334 | { |
4be44fcd LB |
1335 | .callback = force_acpi_ht, |
1336 | .ident = "HP VISUALIZE NT Workstation", | |
1337 | .matches = { | |
1338 | DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"), | |
1339 | DMI_MATCH(DMI_PRODUCT_NAME, "HP VISUALIZE NT Workstation"), | |
1340 | }, | |
1341 | }, | |
aea00143 | 1342 | { |
4be44fcd LB |
1343 | .callback = force_acpi_ht, |
1344 | .ident = "Compaq Workstation W8000", | |
1345 | .matches = { | |
1346 | DMI_MATCH(DMI_SYS_VENDOR, "Compaq"), | |
1347 | DMI_MATCH(DMI_PRODUCT_NAME, "Workstation W8000"), | |
1348 | }, | |
1349 | }, | |
aea00143 | 1350 | { |
4be44fcd LB |
1351 | .callback = force_acpi_ht, |
1352 | .ident = "ASUS P2B-DS", | |
1353 | .matches = { | |
1354 | DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), | |
1355 | DMI_MATCH(DMI_BOARD_NAME, "P2B-DS"), | |
1356 | }, | |
1357 | }, | |
aea00143 | 1358 | { |
4be44fcd LB |
1359 | .callback = force_acpi_ht, |
1360 | .ident = "ASUS CUR-DLS", | |
1361 | .matches = { | |
1362 | DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), | |
1363 | DMI_MATCH(DMI_BOARD_NAME, "CUR-DLS"), | |
1364 | }, | |
1365 | }, | |
aea00143 | 1366 | { |
4be44fcd LB |
1367 | .callback = force_acpi_ht, |
1368 | .ident = "ABIT i440BX-W83977", | |
1369 | .matches = { | |
1370 | DMI_MATCH(DMI_BOARD_VENDOR, "ABIT <http://www.abit.com>"), | |
1371 | DMI_MATCH(DMI_BOARD_NAME, "i440BX-W83977 (BP6)"), | |
1372 | }, | |
1373 | }, | |
aea00143 | 1374 | { |
4be44fcd LB |
1375 | .callback = force_acpi_ht, |
1376 | .ident = "IBM Bladecenter", | |
1377 | .matches = { | |
1378 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), | |
1379 | DMI_MATCH(DMI_BOARD_NAME, "IBM eServer BladeCenter HS20"), | |
1380 | }, | |
1381 | }, | |
aea00143 | 1382 | { |
4be44fcd LB |
1383 | .callback = force_acpi_ht, |
1384 | .ident = "IBM eServer xSeries 360", | |
1385 | .matches = { | |
1386 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), | |
1387 | DMI_MATCH(DMI_BOARD_NAME, "eServer xSeries 360"), | |
1388 | }, | |
1389 | }, | |
aea00143 | 1390 | { |
4be44fcd LB |
1391 | .callback = force_acpi_ht, |
1392 | .ident = "IBM eserver xSeries 330", | |
1393 | .matches = { | |
1394 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), | |
1395 | DMI_MATCH(DMI_BOARD_NAME, "eserver xSeries 330"), | |
1396 | }, | |
1397 | }, | |
aea00143 | 1398 | { |
4be44fcd LB |
1399 | .callback = force_acpi_ht, |
1400 | .ident = "IBM eserver xSeries 440", | |
1401 | .matches = { | |
1402 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), | |
1403 | DMI_MATCH(DMI_PRODUCT_NAME, "eserver xSeries 440"), | |
1404 | }, | |
1405 | }, | |
aea00143 | 1406 | |
aea00143 AP |
1407 | /* |
1408 | * Boxes that need ACPI PCI IRQ routing disabled | |
1409 | */ | |
1410 | { | |
4be44fcd LB |
1411 | .callback = disable_acpi_irq, |
1412 | .ident = "ASUS A7V", | |
1413 | .matches = { | |
1414 | DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC"), | |
1415 | DMI_MATCH(DMI_BOARD_NAME, "<A7V>"), | |
1416 | /* newer BIOS, Revision 1011, does work */ | |
1417 | DMI_MATCH(DMI_BIOS_VERSION, | |
1418 | "ASUS A7V ACPI BIOS Revision 1007"), | |
1419 | }, | |
1420 | }, | |
74586fca LB |
1421 | { |
1422 | /* | |
1423 | * Latest BIOS for IBM 600E (1.16) has bad pcinum | |
1424 | * for LPC bridge, which is needed for the PCI | |
1425 | * interrupt links to work. DSDT fix is in bug 5966. | |
1426 | * 2645, 2646 model numbers are shared with 600/600E/600X | |
1427 | */ | |
1428 | .callback = disable_acpi_irq, | |
1429 | .ident = "IBM Thinkpad 600 Series 2645", | |
1430 | .matches = { | |
1431 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), | |
1432 | DMI_MATCH(DMI_BOARD_NAME, "2645"), | |
1433 | }, | |
1434 | }, | |
1435 | { | |
1436 | .callback = disable_acpi_irq, | |
1437 | .ident = "IBM Thinkpad 600 Series 2646", | |
1438 | .matches = { | |
1439 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), | |
1440 | DMI_MATCH(DMI_BOARD_NAME, "2646"), | |
1441 | }, | |
1442 | }, | |
aea00143 AP |
1443 | /* |
1444 | * Boxes that need ACPI PCI IRQ routing and PCI scan disabled | |
1445 | */ | |
4be44fcd LB |
1446 | { /* _BBN 0 bug */ |
1447 | .callback = disable_acpi_pci, | |
1448 | .ident = "ASUS PR-DLS", | |
1449 | .matches = { | |
1450 | DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), | |
1451 | DMI_MATCH(DMI_BOARD_NAME, "PR-DLS"), | |
1452 | DMI_MATCH(DMI_BIOS_VERSION, | |
1453 | "ASUS PR-DLS ACPI BIOS Revision 1010"), | |
1454 | DMI_MATCH(DMI_BIOS_DATE, "03/21/2003") | |
1455 | }, | |
1456 | }, | |
aea00143 | 1457 | { |
4be44fcd LB |
1458 | .callback = disable_acpi_pci, |
1459 | .ident = "Acer TravelMate 36x Laptop", | |
1460 | .matches = { | |
1461 | DMI_MATCH(DMI_SYS_VENDOR, "Acer"), | |
1462 | DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 360"), | |
1463 | }, | |
1464 | }, | |
35af2821 AH |
1465 | {} |
1466 | }; | |
1467 | ||
1468 | /* second table for DMI checks that should run after early-quirks */ | |
1469 | static struct dmi_system_id __initdata acpi_dmi_table_late[] = { | |
e2079c43 RW |
1470 | /* |
1471 | * HP laptops which use a DSDT reporting as HP/SB400/10000, | |
1472 | * which includes some code which overrides all temperature | |
1473 | * trip points to 16C if the INTIN2 input of the I/O APIC | |
1474 | * is enabled. This input is incorrectly designated the | |
1475 | * ISA IRQ 0 via an interrupt source override even though | |
1476 | * it is wired to the output of the master 8259A and INTIN0 | |
1477 | * is not connected at all. Force ignoring BIOS IRQ0 pin2 | |
1478 | * override in that cases. | |
1479 | */ | |
e84956f9 RW |
1480 | { |
1481 | .callback = dmi_ignore_irq0_timer_override, | |
1482 | .ident = "HP nx6115 laptop", | |
1483 | .matches = { | |
1484 | DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), | |
1485 | DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6115"), | |
1486 | }, | |
1487 | }, | |
e2079c43 RW |
1488 | { |
1489 | .callback = dmi_ignore_irq0_timer_override, | |
1490 | .ident = "HP NX6125 laptop", | |
1491 | .matches = { | |
1492 | DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), | |
1493 | DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6125"), | |
1494 | }, | |
1495 | }, | |
1496 | { | |
1497 | .callback = dmi_ignore_irq0_timer_override, | |
1498 | .ident = "HP NX6325 laptop", | |
1499 | .matches = { | |
1500 | DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), | |
1501 | DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6325"), | |
1502 | }, | |
1503 | }, | |
e84956f9 RW |
1504 | { |
1505 | .callback = dmi_ignore_irq0_timer_override, | |
1506 | .ident = "HP 6715b laptop", | |
1507 | .matches = { | |
1508 | DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), | |
1509 | DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq 6715b"), | |
1510 | }, | |
1511 | }, | |
4be44fcd | 1512 | {} |
aea00143 AP |
1513 | }; |
1514 | ||
1da177e4 LT |
1515 | /* |
1516 | * acpi_boot_table_init() and acpi_boot_init() | |
1517 | * called from setup_arch(), always. | |
1518 | * 1. checksums all tables | |
1519 | * 2. enumerates lapics | |
1520 | * 3. enumerates io-apics | |
1521 | * | |
1522 | * acpi_table_init() is separate to allow reading SRAT without | |
1523 | * other side effects. | |
1524 | * | |
1525 | * side effects of acpi_boot_init: | |
1526 | * acpi_lapic = 1 if LAPIC found | |
1527 | * acpi_ioapic = 1 if IOAPIC found | |
1528 | * if (acpi_lapic && acpi_ioapic) smp_found_config = 1; | |
1529 | * if acpi_blacklisted() acpi_disabled = 1; | |
1530 | * acpi_irq_model=... | |
1531 | * ... | |
1da177e4 LT |
1532 | */ |
1533 | ||
8558e394 | 1534 | void __init acpi_boot_table_init(void) |
1da177e4 | 1535 | { |
aea00143 | 1536 | dmi_check_system(acpi_dmi_table); |
aea00143 | 1537 | |
1da177e4 LT |
1538 | /* |
1539 | * If acpi_disabled, bail out | |
1540 | * One exception: acpi=ht continues far enough to enumerate LAPICs | |
1541 | */ | |
1542 | if (acpi_disabled && !acpi_ht) | |
8558e394 | 1543 | return; |
1da177e4 | 1544 | |
5f3b1a8b | 1545 | /* |
1da177e4 LT |
1546 | * Initialize the ACPI boot-time table parser. |
1547 | */ | |
8558e394 | 1548 | if (acpi_table_init()) { |
1da177e4 | 1549 | disable_acpi(); |
8558e394 | 1550 | return; |
1da177e4 | 1551 | } |
1da177e4 | 1552 | |
5f3b1a8b | 1553 | acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf); |
1da177e4 LT |
1554 | |
1555 | /* | |
1556 | * blacklist may disable ACPI entirely | |
1557 | */ | |
8558e394 | 1558 | if (acpi_blacklisted()) { |
1da177e4 LT |
1559 | if (acpi_force) { |
1560 | printk(KERN_WARNING PREFIX "acpi=force override\n"); | |
1561 | } else { | |
1562 | printk(KERN_WARNING PREFIX "Disabling ACPI support\n"); | |
1563 | disable_acpi(); | |
8558e394 | 1564 | return; |
1da177e4 LT |
1565 | } |
1566 | } | |
cbf9bd60 YL |
1567 | } |
1568 | ||
1569 | int __init early_acpi_boot_init(void) | |
1570 | { | |
1571 | /* | |
1572 | * If acpi_disabled, bail out | |
1573 | * One exception: acpi=ht continues far enough to enumerate LAPICs | |
1574 | */ | |
1575 | if (acpi_disabled && !acpi_ht) | |
1576 | return 1; | |
1577 | ||
1578 | /* | |
1579 | * Process the Multiple APIC Description Table (MADT), if present | |
1580 | */ | |
1581 | early_acpi_process_madt(); | |
1da177e4 LT |
1582 | |
1583 | return 0; | |
1584 | } | |
1585 | ||
1da177e4 LT |
1586 | int __init acpi_boot_init(void) |
1587 | { | |
35af2821 AH |
1588 | /* those are executed after early-quirks are executed */ |
1589 | dmi_check_system(acpi_dmi_table_late); | |
1590 | ||
1da177e4 LT |
1591 | /* |
1592 | * If acpi_disabled, bail out | |
1593 | * One exception: acpi=ht continues far enough to enumerate LAPICs | |
1594 | */ | |
1595 | if (acpi_disabled && !acpi_ht) | |
4be44fcd | 1596 | return 1; |
1da177e4 | 1597 | |
5f3b1a8b | 1598 | acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf); |
1da177e4 LT |
1599 | |
1600 | /* | |
1601 | * set sci_int and PM timer address | |
1602 | */ | |
ceb6c468 | 1603 | acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt); |
1da177e4 LT |
1604 | |
1605 | /* | |
1606 | * Process the Multiple APIC Description Table (MADT), if present | |
1607 | */ | |
1608 | acpi_process_madt(); | |
1609 | ||
5f3b1a8b | 1610 | acpi_table_parse(ACPI_SIG_HPET, acpi_parse_hpet); |
1da177e4 LT |
1611 | |
1612 | return 0; | |
1613 | } | |
1a3f239d RR |
1614 | |
1615 | static int __init parse_acpi(char *arg) | |
1616 | { | |
1617 | if (!arg) | |
1618 | return -EINVAL; | |
1619 | ||
1620 | /* "acpi=off" disables both ACPI table parsing and interpreter */ | |
1621 | if (strcmp(arg, "off") == 0) { | |
1622 | disable_acpi(); | |
1623 | } | |
1624 | /* acpi=force to over-ride black-list */ | |
1625 | else if (strcmp(arg, "force") == 0) { | |
1626 | acpi_force = 1; | |
1627 | acpi_ht = 1; | |
1628 | acpi_disabled = 0; | |
1629 | } | |
1630 | /* acpi=strict disables out-of-spec workarounds */ | |
1631 | else if (strcmp(arg, "strict") == 0) { | |
1632 | acpi_strict = 1; | |
1633 | } | |
1634 | /* Limit ACPI just to boot-time to enable HT */ | |
1635 | else if (strcmp(arg, "ht") == 0) { | |
1636 | if (!acpi_force) | |
1637 | disable_acpi(); | |
1638 | acpi_ht = 1; | |
1639 | } | |
237889bf ZY |
1640 | /* acpi=rsdt use RSDT instead of XSDT */ |
1641 | else if (strcmp(arg, "rsdt") == 0) { | |
1642 | acpi_rsdt_forced = 1; | |
1643 | } | |
1a3f239d RR |
1644 | /* "acpi=noirq" disables ACPI interrupt routing */ |
1645 | else if (strcmp(arg, "noirq") == 0) { | |
1646 | acpi_noirq_set(); | |
1647 | } else { | |
1648 | /* Core will printk when we return error. */ | |
1649 | return -EINVAL; | |
1650 | } | |
1651 | return 0; | |
1652 | } | |
1653 | early_param("acpi", parse_acpi); | |
1654 | ||
1655 | /* FIXME: Using pci= for an ACPI parameter is a travesty. */ | |
1656 | static int __init parse_pci(char *arg) | |
1657 | { | |
1658 | if (arg && strcmp(arg, "noacpi") == 0) | |
1659 | acpi_disable_pci(); | |
1660 | return 0; | |
1661 | } | |
1662 | early_param("pci", parse_pci); | |
1663 | ||
3c999f14 YL |
1664 | int __init acpi_mps_check(void) |
1665 | { | |
1666 | #if defined(CONFIG_X86_LOCAL_APIC) && !defined(CONFIG_X86_MPPARSE) | |
1667 | /* mptable code is not built-in*/ | |
1668 | if (acpi_disabled || acpi_noirq) { | |
1669 | printk(KERN_WARNING "MPS support code is not built-in.\n" | |
1670 | "Using acpi=off or acpi=noirq or pci=noacpi " | |
1671 | "may have problem\n"); | |
1672 | return 1; | |
1673 | } | |
1674 | #endif | |
1675 | return 0; | |
1676 | } | |
1677 | ||
1a3f239d RR |
1678 | #ifdef CONFIG_X86_IO_APIC |
1679 | static int __init parse_acpi_skip_timer_override(char *arg) | |
1680 | { | |
1681 | acpi_skip_timer_override = 1; | |
1682 | return 0; | |
1683 | } | |
1684 | early_param("acpi_skip_timer_override", parse_acpi_skip_timer_override); | |
fa18f477 AK |
1685 | |
1686 | static int __init parse_acpi_use_timer_override(char *arg) | |
1687 | { | |
1688 | acpi_use_timer_override = 1; | |
1689 | return 0; | |
1690 | } | |
1691 | early_param("acpi_use_timer_override", parse_acpi_use_timer_override); | |
1a3f239d RR |
1692 | #endif /* CONFIG_X86_IO_APIC */ |
1693 | ||
1694 | static int __init setup_acpi_sci(char *s) | |
1695 | { | |
1696 | if (!s) | |
1697 | return -EINVAL; | |
1698 | if (!strcmp(s, "edge")) | |
5f3b1a8b AS |
1699 | acpi_sci_flags = ACPI_MADT_TRIGGER_EDGE | |
1700 | (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK); | |
1a3f239d | 1701 | else if (!strcmp(s, "level")) |
5f3b1a8b AS |
1702 | acpi_sci_flags = ACPI_MADT_TRIGGER_LEVEL | |
1703 | (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK); | |
1a3f239d | 1704 | else if (!strcmp(s, "high")) |
5f3b1a8b AS |
1705 | acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_HIGH | |
1706 | (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK); | |
1a3f239d | 1707 | else if (!strcmp(s, "low")) |
5f3b1a8b AS |
1708 | acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_LOW | |
1709 | (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK); | |
1a3f239d RR |
1710 | else |
1711 | return -EINVAL; | |
1712 | return 0; | |
1713 | } | |
1714 | early_param("acpi_sci", setup_acpi_sci); | |
d0a9081b AM |
1715 | |
1716 | int __acpi_acquire_global_lock(unsigned int *lock) | |
1717 | { | |
1718 | unsigned int old, new, val; | |
1719 | do { | |
1720 | old = *lock; | |
1721 | new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1)); | |
1722 | val = cmpxchg(lock, old, new); | |
1723 | } while (unlikely (val != old)); | |
1724 | return (new < 3) ? -1 : 0; | |
1725 | } | |
1726 | ||
1727 | int __acpi_release_global_lock(unsigned int *lock) | |
1728 | { | |
1729 | unsigned int old, new, val; | |
1730 | do { | |
1731 | old = *lock; | |
1732 | new = old & ~0x3; | |
1733 | val = cmpxchg(lock, old, new); | |
1734 | } while (unlikely (val != old)); | |
1735 | return old & 0x1; | |
1736 | } |