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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 | 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 | |
67 | int acpi_lapic; | |
68 | int acpi_ioapic; | |
69 | int acpi_strict; | |
1da177e4 | 70 | |
5f3b1a8b | 71 | u8 acpi_sci_flags __initdata; |
1da177e4 LT |
72 | int acpi_sci_override_gsi __initdata; |
73 | int acpi_skip_timer_override __initdata; | |
fa18f477 | 74 | int acpi_use_timer_override __initdata; |
1da177e4 LT |
75 | |
76 | #ifdef CONFIG_X86_LOCAL_APIC | |
77 | static u64 acpi_lapic_addr __initdata = APIC_DEFAULT_PHYS_BASE; | |
78 | #endif | |
79 | ||
80 | #ifndef __HAVE_ARCH_CMPXCHG | |
81 | #warning ACPI uses CMPXCHG, i486 and later hardware | |
82 | #endif | |
83 | ||
1da177e4 LT |
84 | /* -------------------------------------------------------------------------- |
85 | Boot-time Configuration | |
86 | -------------------------------------------------------------------------- */ | |
87 | ||
88 | /* | |
89 | * The default interrupt routing model is PIC (8259). This gets | |
27b46d76 | 90 | * overridden if IOAPICs are enumerated (below). |
1da177e4 | 91 | */ |
4be44fcd | 92 | enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_PIC; |
1da177e4 | 93 | |
1da177e4 | 94 | |
988856ee EB |
95 | /* |
96 | * ISA irqs by default are the first 16 gsis but can be | |
97 | * any gsi as specified by an interrupt source override. | |
98 | */ | |
99 | static u32 isa_irq_to_gsi[NR_IRQS_LEGACY] __read_mostly = { | |
100 | 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 | |
101 | }; | |
102 | ||
103 | static unsigned int gsi_to_irq(unsigned int gsi) | |
104 | { | |
105 | unsigned int irq = gsi + NR_IRQS_LEGACY; | |
106 | unsigned int i; | |
107 | ||
108 | for (i = 0; i < NR_IRQS_LEGACY; i++) { | |
109 | if (isa_irq_to_gsi[i] == gsi) { | |
110 | return i; | |
111 | } | |
112 | } | |
113 | ||
114 | /* Provide an identity mapping of gsi == irq | |
115 | * except on truly weird platforms that have | |
116 | * non isa irqs in the first 16 gsis. | |
117 | */ | |
118 | if (gsi >= NR_IRQS_LEGACY) | |
119 | irq = gsi; | |
120 | else | |
a4384df3 | 121 | irq = gsi_top + gsi; |
988856ee EB |
122 | |
123 | return irq; | |
124 | } | |
125 | ||
126 | static u32 irq_to_gsi(int irq) | |
127 | { | |
128 | unsigned int gsi; | |
129 | ||
130 | if (irq < NR_IRQS_LEGACY) | |
131 | gsi = isa_irq_to_gsi[irq]; | |
a4384df3 | 132 | else if (irq < gsi_top) |
988856ee | 133 | gsi = irq; |
a4384df3 EB |
134 | else if (irq < (gsi_top + NR_IRQS_LEGACY)) |
135 | gsi = irq - gsi_top; | |
988856ee EB |
136 | else |
137 | gsi = 0xffffffff; | |
138 | ||
139 | return gsi; | |
140 | } | |
141 | ||
1da177e4 LT |
142 | /* |
143 | * Temporarily use the virtual area starting from FIX_IO_APIC_BASE_END, | |
144 | * to map the target physical address. The problem is that set_fixmap() | |
145 | * provides a single page, and it is possible that the page is not | |
146 | * sufficient. | |
147 | * By using this area, we can map up to MAX_IO_APICS pages temporarily, | |
148 | * i.e. until the next __va_range() call. | |
149 | * | |
150 | * Important Safety Note: The fixed I/O APIC page numbers are *subtracted* | |
151 | * from the fixed base. That's why we start at FIX_IO_APIC_BASE_END and | |
152 | * count idx down while incrementing the phys address. | |
153 | */ | |
2fdf0741 | 154 | char *__init __acpi_map_table(unsigned long phys, unsigned long size) |
1da177e4 | 155 | { |
1da177e4 | 156 | |
f34fa82b YL |
157 | if (!phys || !size) |
158 | return NULL; | |
159 | ||
7d97277b YL |
160 | return early_ioremap(phys, size); |
161 | } | |
162 | void __init __acpi_unmap_table(char *map, unsigned long size) | |
163 | { | |
164 | if (!map || !size) | |
165 | return; | |
1da177e4 | 166 | |
7d97277b | 167 | early_iounmap(map, size); |
1da177e4 | 168 | } |
1da177e4 | 169 | |
1da177e4 | 170 | #ifdef CONFIG_X86_LOCAL_APIC |
15a58ed1 | 171 | static int __init acpi_parse_madt(struct acpi_table_header *table) |
1da177e4 | 172 | { |
4be44fcd | 173 | struct acpi_table_madt *madt = NULL; |
1da177e4 | 174 | |
15a58ed1 | 175 | if (!cpu_has_apic) |
1da177e4 LT |
176 | return -EINVAL; |
177 | ||
15a58ed1 | 178 | madt = (struct acpi_table_madt *)table; |
1da177e4 LT |
179 | if (!madt) { |
180 | printk(KERN_WARNING PREFIX "Unable to map MADT\n"); | |
181 | return -ENODEV; | |
182 | } | |
183 | ||
ad363f80 AS |
184 | if (madt->address) { |
185 | acpi_lapic_addr = (u64) madt->address; | |
1da177e4 LT |
186 | |
187 | printk(KERN_DEBUG PREFIX "Local APIC address 0x%08x\n", | |
ad363f80 | 188 | madt->address); |
1da177e4 LT |
189 | } |
190 | ||
306db03b IM |
191 | default_acpi_madt_oem_check(madt->header.oem_id, |
192 | madt->header.oem_table_id); | |
4be44fcd | 193 | |
1da177e4 LT |
194 | return 0; |
195 | } | |
196 | ||
dfac2189 AS |
197 | static void __cpuinit acpi_register_lapic(int id, u8 enabled) |
198 | { | |
fb3bbd6a YL |
199 | unsigned int ver = 0; |
200 | ||
dfac2189 AS |
201 | if (!enabled) { |
202 | ++disabled_cpus; | |
203 | return; | |
204 | } | |
205 | ||
fb3bbd6a YL |
206 | if (boot_cpu_physical_apicid != -1U) |
207 | ver = apic_version[boot_cpu_physical_apicid]; | |
fb3bbd6a YL |
208 | |
209 | generic_processor_info(id, ver); | |
dfac2189 AS |
210 | } |
211 | ||
7237d3de SS |
212 | static int __init |
213 | acpi_parse_x2apic(struct acpi_subtable_header *header, const unsigned long end) | |
214 | { | |
215 | struct acpi_madt_local_x2apic *processor = NULL; | |
216 | ||
217 | processor = (struct acpi_madt_local_x2apic *)header; | |
218 | ||
219 | if (BAD_MADT_ENTRY(processor, end)) | |
220 | return -EINVAL; | |
221 | ||
222 | acpi_table_print_madt_entry(header); | |
223 | ||
224 | #ifdef CONFIG_X86_X2APIC | |
225 | /* | |
226 | * We need to register disabled CPU as well to permit | |
227 | * counting disabled CPUs. This allows us to size | |
228 | * cpus_possible_map more accurately, to permit | |
229 | * to not preallocating memory for all NR_CPUS | |
230 | * when we use CPU hotplug. | |
231 | */ | |
232 | acpi_register_lapic(processor->local_apic_id, /* APIC ID */ | |
233 | processor->lapic_flags & ACPI_MADT_ENABLED); | |
234 | #else | |
235 | printk(KERN_WARNING PREFIX "x2apic entry ignored\n"); | |
236 | #endif | |
237 | ||
238 | return 0; | |
239 | } | |
240 | ||
1da177e4 | 241 | static int __init |
5f3b1a8b | 242 | acpi_parse_lapic(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 243 | { |
5f3b1a8b | 244 | struct acpi_madt_local_apic *processor = NULL; |
1da177e4 | 245 | |
5f3b1a8b | 246 | processor = (struct acpi_madt_local_apic *)header; |
1da177e4 LT |
247 | |
248 | if (BAD_MADT_ENTRY(processor, end)) | |
249 | return -EINVAL; | |
250 | ||
251 | acpi_table_print_madt_entry(header); | |
252 | ||
7f66ae48 AR |
253 | /* |
254 | * We need to register disabled CPU as well to permit | |
255 | * counting disabled CPUs. This allows us to size | |
256 | * cpus_possible_map more accurately, to permit | |
257 | * to not preallocating memory for all NR_CPUS | |
258 | * when we use CPU hotplug. | |
259 | */ | |
dfac2189 AS |
260 | acpi_register_lapic(processor->id, /* APIC ID */ |
261 | processor->lapic_flags & ACPI_MADT_ENABLED); | |
1da177e4 LT |
262 | |
263 | return 0; | |
264 | } | |
265 | ||
ac049c1d JS |
266 | static int __init |
267 | acpi_parse_sapic(struct acpi_subtable_header *header, const unsigned long end) | |
268 | { | |
269 | struct acpi_madt_local_sapic *processor = NULL; | |
270 | ||
271 | processor = (struct acpi_madt_local_sapic *)header; | |
272 | ||
273 | if (BAD_MADT_ENTRY(processor, end)) | |
274 | return -EINVAL; | |
275 | ||
276 | acpi_table_print_madt_entry(header); | |
277 | ||
dfac2189 AS |
278 | acpi_register_lapic((processor->id << 8) | processor->eid,/* APIC ID */ |
279 | processor->lapic_flags & ACPI_MADT_ENABLED); | |
ac049c1d JS |
280 | |
281 | return 0; | |
282 | } | |
283 | ||
1da177e4 | 284 | static int __init |
5f3b1a8b | 285 | acpi_parse_lapic_addr_ovr(struct acpi_subtable_header * header, |
4be44fcd | 286 | const unsigned long end) |
1da177e4 | 287 | { |
5f3b1a8b | 288 | struct acpi_madt_local_apic_override *lapic_addr_ovr = NULL; |
1da177e4 | 289 | |
5f3b1a8b | 290 | lapic_addr_ovr = (struct acpi_madt_local_apic_override *)header; |
1da177e4 LT |
291 | |
292 | if (BAD_MADT_ENTRY(lapic_addr_ovr, end)) | |
293 | return -EINVAL; | |
294 | ||
295 | acpi_lapic_addr = lapic_addr_ovr->address; | |
296 | ||
297 | return 0; | |
298 | } | |
299 | ||
7237d3de SS |
300 | static int __init |
301 | acpi_parse_x2apic_nmi(struct acpi_subtable_header *header, | |
302 | const unsigned long end) | |
303 | { | |
304 | struct acpi_madt_local_x2apic_nmi *x2apic_nmi = NULL; | |
305 | ||
306 | x2apic_nmi = (struct acpi_madt_local_x2apic_nmi *)header; | |
307 | ||
308 | if (BAD_MADT_ENTRY(x2apic_nmi, end)) | |
309 | return -EINVAL; | |
310 | ||
311 | acpi_table_print_madt_entry(header); | |
312 | ||
313 | if (x2apic_nmi->lint != 1) | |
314 | printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n"); | |
315 | ||
316 | return 0; | |
317 | } | |
318 | ||
1da177e4 | 319 | static int __init |
5f3b1a8b | 320 | acpi_parse_lapic_nmi(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 321 | { |
5f3b1a8b | 322 | struct acpi_madt_local_apic_nmi *lapic_nmi = NULL; |
1da177e4 | 323 | |
5f3b1a8b | 324 | lapic_nmi = (struct acpi_madt_local_apic_nmi *)header; |
1da177e4 LT |
325 | |
326 | if (BAD_MADT_ENTRY(lapic_nmi, end)) | |
327 | return -EINVAL; | |
328 | ||
329 | acpi_table_print_madt_entry(header); | |
330 | ||
331 | if (lapic_nmi->lint != 1) | |
332 | printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n"); | |
333 | ||
334 | return 0; | |
335 | } | |
336 | ||
4be44fcd | 337 | #endif /*CONFIG_X86_LOCAL_APIC */ |
1da177e4 | 338 | |
8466361a | 339 | #ifdef CONFIG_X86_IO_APIC |
1da177e4 LT |
340 | |
341 | static int __init | |
5f3b1a8b | 342 | acpi_parse_ioapic(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 343 | { |
5f3b1a8b | 344 | struct acpi_madt_io_apic *ioapic = NULL; |
1da177e4 | 345 | |
5f3b1a8b | 346 | ioapic = (struct acpi_madt_io_apic *)header; |
1da177e4 LT |
347 | |
348 | if (BAD_MADT_ENTRY(ioapic, end)) | |
349 | return -EINVAL; | |
4be44fcd | 350 | |
1da177e4 LT |
351 | acpi_table_print_madt_entry(header); |
352 | ||
4be44fcd LB |
353 | mp_register_ioapic(ioapic->id, |
354 | ioapic->address, ioapic->global_irq_base); | |
355 | ||
1da177e4 LT |
356 | return 0; |
357 | } | |
358 | ||
359 | /* | |
360 | * Parse Interrupt Source Override for the ACPI SCI | |
361 | */ | |
9d2062b8 | 362 | static void __init acpi_sci_ioapic_setup(u8 bus_irq, u16 polarity, u16 trigger, u32 gsi) |
1da177e4 LT |
363 | { |
364 | if (trigger == 0) /* compatible SCI trigger is level */ | |
365 | trigger = 3; | |
366 | ||
367 | if (polarity == 0) /* compatible SCI polarity is low */ | |
368 | polarity = 3; | |
369 | ||
370 | /* Command-line over-ride via acpi_sci= */ | |
5f3b1a8b AS |
371 | if (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) |
372 | trigger = (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) >> 2; | |
1da177e4 | 373 | |
5f3b1a8b AS |
374 | if (acpi_sci_flags & ACPI_MADT_POLARITY_MASK) |
375 | polarity = acpi_sci_flags & ACPI_MADT_POLARITY_MASK; | |
1da177e4 LT |
376 | |
377 | /* | |
4be44fcd | 378 | * mp_config_acpi_legacy_irqs() already setup IRQs < 16 |
1da177e4 LT |
379 | * If GSI is < 16, this will update its flags, |
380 | * else it will create a new mp_irqs[] entry. | |
381 | */ | |
9d2062b8 | 382 | mp_override_legacy_irq(bus_irq, polarity, trigger, gsi); |
1da177e4 LT |
383 | |
384 | /* | |
385 | * stash over-ride to indicate we've been here | |
cee324b1 | 386 | * and for later update of acpi_gbl_FADT |
1da177e4 | 387 | */ |
7bdd21ce | 388 | acpi_sci_override_gsi = gsi; |
1da177e4 LT |
389 | return; |
390 | } | |
391 | ||
392 | static int __init | |
5f3b1a8b | 393 | acpi_parse_int_src_ovr(struct acpi_subtable_header * header, |
4be44fcd | 394 | const unsigned long end) |
1da177e4 | 395 | { |
5f3b1a8b | 396 | struct acpi_madt_interrupt_override *intsrc = NULL; |
1da177e4 | 397 | |
5f3b1a8b | 398 | intsrc = (struct acpi_madt_interrupt_override *)header; |
1da177e4 LT |
399 | |
400 | if (BAD_MADT_ENTRY(intsrc, end)) | |
401 | return -EINVAL; | |
402 | ||
403 | acpi_table_print_madt_entry(header); | |
404 | ||
5f3b1a8b | 405 | if (intsrc->source_irq == acpi_gbl_FADT.sci_interrupt) { |
9d2062b8 | 406 | acpi_sci_ioapic_setup(intsrc->source_irq, |
5f3b1a8b | 407 | intsrc->inti_flags & ACPI_MADT_POLARITY_MASK, |
9d2062b8 EB |
408 | (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2, |
409 | intsrc->global_irq); | |
1da177e4 LT |
410 | return 0; |
411 | } | |
412 | ||
413 | if (acpi_skip_timer_override && | |
5f3b1a8b | 414 | intsrc->source_irq == 0 && intsrc->global_irq == 2) { |
4be44fcd LB |
415 | printk(PREFIX "BIOS IRQ0 pin2 override ignored.\n"); |
416 | return 0; | |
1da177e4 LT |
417 | } |
418 | ||
5f3b1a8b AS |
419 | mp_override_legacy_irq(intsrc->source_irq, |
420 | intsrc->inti_flags & ACPI_MADT_POLARITY_MASK, | |
421 | (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2, | |
422 | intsrc->global_irq); | |
1da177e4 LT |
423 | |
424 | return 0; | |
425 | } | |
426 | ||
1da177e4 | 427 | static int __init |
5f3b1a8b | 428 | acpi_parse_nmi_src(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 429 | { |
5f3b1a8b | 430 | struct acpi_madt_nmi_source *nmi_src = NULL; |
1da177e4 | 431 | |
5f3b1a8b | 432 | nmi_src = (struct acpi_madt_nmi_source *)header; |
1da177e4 LT |
433 | |
434 | if (BAD_MADT_ENTRY(nmi_src, end)) | |
435 | return -EINVAL; | |
436 | ||
437 | acpi_table_print_madt_entry(header); | |
438 | ||
439 | /* TBD: Support nimsrc entries? */ | |
440 | ||
441 | return 0; | |
442 | } | |
443 | ||
4be44fcd | 444 | #endif /* CONFIG_X86_IO_APIC */ |
1da177e4 | 445 | |
1da177e4 LT |
446 | /* |
447 | * acpi_pic_sci_set_trigger() | |
5f3b1a8b | 448 | * |
1da177e4 LT |
449 | * use ELCR to set PIC-mode trigger type for SCI |
450 | * | |
451 | * If a PIC-mode SCI is not recognized or gives spurious IRQ7's | |
452 | * it may require Edge Trigger -- use "acpi_sci=edge" | |
453 | * | |
454 | * Port 0x4d0-4d1 are ECLR1 and ECLR2, the Edge/Level Control Registers | |
455 | * for the 8259 PIC. bit[n] = 1 means irq[n] is Level, otherwise Edge. | |
27b46d76 SA |
456 | * ECLR1 is IRQs 0-7 (IRQ 0, 1, 2 must be 0) |
457 | * ECLR2 is IRQs 8-15 (IRQ 8, 13 must be 0) | |
1da177e4 LT |
458 | */ |
459 | ||
4be44fcd | 460 | void __init acpi_pic_sci_set_trigger(unsigned int irq, u16 trigger) |
1da177e4 LT |
461 | { |
462 | unsigned int mask = 1 << irq; | |
463 | unsigned int old, new; | |
464 | ||
465 | /* Real old ELCR mask */ | |
466 | old = inb(0x4d0) | (inb(0x4d1) << 8); | |
467 | ||
468 | /* | |
27b46d76 | 469 | * If we use ACPI to set PCI IRQs, then we should clear ELCR |
1da177e4 LT |
470 | * since we will set it correctly as we enable the PCI irq |
471 | * routing. | |
472 | */ | |
473 | new = acpi_noirq ? old : 0; | |
474 | ||
475 | /* | |
476 | * Update SCI information in the ELCR, it isn't in the PCI | |
477 | * routing tables.. | |
478 | */ | |
479 | switch (trigger) { | |
4be44fcd | 480 | case 1: /* Edge - clear */ |
1da177e4 LT |
481 | new &= ~mask; |
482 | break; | |
4be44fcd | 483 | case 3: /* Level - set */ |
1da177e4 LT |
484 | new |= mask; |
485 | break; | |
486 | } | |
487 | ||
488 | if (old == new) | |
489 | return; | |
490 | ||
491 | printk(PREFIX "setting ELCR to %04x (from %04x)\n", new, old); | |
492 | outb(new, 0x4d0); | |
493 | outb(new >> 8, 0x4d1); | |
494 | } | |
495 | ||
1da177e4 LT |
496 | int acpi_gsi_to_irq(u32 gsi, unsigned int *irq) |
497 | { | |
988856ee | 498 | *irq = gsi_to_irq(gsi); |
18dce6ba YL |
499 | |
500 | #ifdef CONFIG_X86_IO_APIC | |
501 | if (acpi_irq_model == ACPI_IRQ_MODEL_IOAPIC) | |
502 | setup_IO_APIC_irq_extra(gsi); | |
503 | #endif | |
504 | ||
1da177e4 LT |
505 | return 0; |
506 | } | |
81e88fdc | 507 | EXPORT_SYMBOL_GPL(acpi_gsi_to_irq); |
1da177e4 | 508 | |
2c2df841 EB |
509 | int acpi_isa_irq_to_gsi(unsigned isa_irq, u32 *gsi) |
510 | { | |
511 | if (isa_irq >= 16) | |
512 | return -1; | |
988856ee | 513 | *gsi = irq_to_gsi(isa_irq); |
2c2df841 EB |
514 | return 0; |
515 | } | |
516 | ||
2f065aef JF |
517 | static int acpi_register_gsi_pic(struct device *dev, u32 gsi, |
518 | int trigger, int polarity) | |
1da177e4 | 519 | { |
1da177e4 LT |
520 | #ifdef CONFIG_PCI |
521 | /* | |
522 | * Make sure all (legacy) PCI IRQs are set as level-triggered. | |
523 | */ | |
2f065aef JF |
524 | if (trigger == ACPI_LEVEL_SENSITIVE) |
525 | eisa_set_level_irq(gsi); | |
1da177e4 LT |
526 | #endif |
527 | ||
2f065aef JF |
528 | return gsi; |
529 | } | |
530 | ||
531 | static int acpi_register_gsi_ioapic(struct device *dev, u32 gsi, | |
532 | int trigger, int polarity) | |
533 | { | |
1da177e4 | 534 | #ifdef CONFIG_X86_IO_APIC |
2f065aef | 535 | gsi = mp_register_gsi(dev, gsi, trigger, polarity); |
1da177e4 | 536 | #endif |
2f065aef JF |
537 | |
538 | return gsi; | |
539 | } | |
540 | ||
90f6881e JF |
541 | int (*__acpi_register_gsi)(struct device *dev, u32 gsi, |
542 | int trigger, int polarity) = acpi_register_gsi_pic; | |
2f065aef JF |
543 | |
544 | /* | |
545 | * success: return IRQ number (>=0) | |
546 | * failure: return < 0 | |
547 | */ | |
548 | int acpi_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity) | |
549 | { | |
550 | unsigned int irq; | |
551 | unsigned int plat_gsi = gsi; | |
552 | ||
553 | plat_gsi = (*__acpi_register_gsi)(dev, gsi, trigger, polarity); | |
988856ee | 554 | irq = gsi_to_irq(plat_gsi); |
18dce6ba | 555 | |
1da177e4 LT |
556 | return irq; |
557 | } | |
4be44fcd | 558 | |
2f065aef JF |
559 | void __init acpi_set_irq_model_pic(void) |
560 | { | |
561 | acpi_irq_model = ACPI_IRQ_MODEL_PIC; | |
562 | __acpi_register_gsi = acpi_register_gsi_pic; | |
563 | acpi_ioapic = 0; | |
564 | } | |
565 | ||
566 | void __init acpi_set_irq_model_ioapic(void) | |
567 | { | |
568 | acpi_irq_model = ACPI_IRQ_MODEL_IOAPIC; | |
569 | __acpi_register_gsi = acpi_register_gsi_ioapic; | |
570 | acpi_ioapic = 1; | |
571 | } | |
572 | ||
1da177e4 LT |
573 | /* |
574 | * ACPI based hotplug support for CPU | |
575 | */ | |
576 | #ifdef CONFIG_ACPI_HOTPLUG_CPU | |
d8191fa4 | 577 | #include <acpi/processor.h> |
009cbadb | 578 | |
0271f910 HL |
579 | static void acpi_map_cpu2node(acpi_handle handle, int cpu, int physid) |
580 | { | |
581 | #ifdef CONFIG_ACPI_NUMA | |
582 | int nid; | |
583 | ||
584 | nid = acpi_get_node(handle); | |
585 | if (nid == -1 || !node_online(nid)) | |
586 | return; | |
587 | #ifdef CONFIG_X86_64 | |
588 | apicid_to_node[physid] = nid; | |
589 | numa_set_node(cpu, nid); | |
590 | #else /* CONFIG_X86_32 */ | |
591 | apicid_2_node[physid] = nid; | |
592 | cpu_to_node_map[cpu] = nid; | |
593 | #endif | |
594 | ||
595 | #endif | |
596 | } | |
009cbadb SR |
597 | |
598 | static int __cpuinit _acpi_map_lsapic(acpi_handle handle, int *pcpu) | |
1da177e4 | 599 | { |
73fea175 AR |
600 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
601 | union acpi_object *obj; | |
5f3b1a8b | 602 | struct acpi_madt_local_apic *lapic; |
ee943a82 | 603 | cpumask_var_t tmp_map, new_map; |
73fea175 AR |
604 | u8 physid; |
605 | int cpu; | |
ee943a82 | 606 | int retval = -ENOMEM; |
73fea175 AR |
607 | |
608 | if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer))) | |
609 | return -EINVAL; | |
610 | ||
611 | if (!buffer.length || !buffer.pointer) | |
612 | return -EINVAL; | |
613 | ||
614 | obj = buffer.pointer; | |
615 | if (obj->type != ACPI_TYPE_BUFFER || | |
616 | obj->buffer.length < sizeof(*lapic)) { | |
617 | kfree(buffer.pointer); | |
618 | return -EINVAL; | |
619 | } | |
620 | ||
5f3b1a8b | 621 | lapic = (struct acpi_madt_local_apic *)obj->buffer.pointer; |
73fea175 | 622 | |
5f3b1a8b AS |
623 | if (lapic->header.type != ACPI_MADT_TYPE_LOCAL_APIC || |
624 | !(lapic->lapic_flags & ACPI_MADT_ENABLED)) { | |
73fea175 AR |
625 | kfree(buffer.pointer); |
626 | return -EINVAL; | |
627 | } | |
628 | ||
629 | physid = lapic->id; | |
630 | ||
631 | kfree(buffer.pointer); | |
632 | buffer.length = ACPI_ALLOCATE_BUFFER; | |
633 | buffer.pointer = NULL; | |
634 | ||
ee943a82 RR |
635 | if (!alloc_cpumask_var(&tmp_map, GFP_KERNEL)) |
636 | goto out; | |
637 | ||
638 | if (!alloc_cpumask_var(&new_map, GFP_KERNEL)) | |
639 | goto free_tmp_map; | |
640 | ||
641 | cpumask_copy(tmp_map, cpu_present_mask); | |
dfac2189 | 642 | acpi_register_lapic(physid, lapic->lapic_flags & ACPI_MADT_ENABLED); |
73fea175 AR |
643 | |
644 | /* | |
645 | * If mp_register_lapic successfully generates a new logical cpu | |
646 | * number, then the following will get us exactly what was mapped | |
647 | */ | |
ee943a82 RR |
648 | cpumask_andnot(new_map, cpu_present_mask, tmp_map); |
649 | if (cpumask_empty(new_map)) { | |
73fea175 | 650 | printk ("Unable to map lapic to logical cpu number\n"); |
ee943a82 RR |
651 | retval = -EINVAL; |
652 | goto free_new_map; | |
73fea175 AR |
653 | } |
654 | ||
d8191fa4 AC |
655 | acpi_processor_set_pdc(handle); |
656 | ||
ee943a82 | 657 | cpu = cpumask_first(new_map); |
0271f910 | 658 | acpi_map_cpu2node(handle, cpu, physid); |
73fea175 AR |
659 | |
660 | *pcpu = cpu; | |
ee943a82 RR |
661 | retval = 0; |
662 | ||
663 | free_new_map: | |
664 | free_cpumask_var(new_map); | |
665 | free_tmp_map: | |
666 | free_cpumask_var(tmp_map); | |
667 | out: | |
668 | return retval; | |
1da177e4 | 669 | } |
1da177e4 | 670 | |
009cbadb SR |
671 | /* wrapper to silence section mismatch warning */ |
672 | int __ref acpi_map_lsapic(acpi_handle handle, int *pcpu) | |
673 | { | |
674 | return _acpi_map_lsapic(handle, pcpu); | |
675 | } | |
4be44fcd | 676 | EXPORT_SYMBOL(acpi_map_lsapic); |
1da177e4 | 677 | |
4be44fcd | 678 | int acpi_unmap_lsapic(int cpu) |
1da177e4 | 679 | { |
71fff5e6 | 680 | per_cpu(x86_cpu_to_apicid, cpu) = -1; |
9628937d | 681 | set_cpu_present(cpu, false); |
73fea175 AR |
682 | num_processors--; |
683 | ||
684 | return (0); | |
1da177e4 | 685 | } |
4be44fcd | 686 | |
1da177e4 | 687 | EXPORT_SYMBOL(acpi_unmap_lsapic); |
4be44fcd | 688 | #endif /* CONFIG_ACPI_HOTPLUG_CPU */ |
1da177e4 | 689 | |
4be44fcd | 690 | int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base) |
b1bb248a KK |
691 | { |
692 | /* TBD */ | |
693 | return -EINVAL; | |
694 | } | |
4be44fcd | 695 | |
b1bb248a KK |
696 | EXPORT_SYMBOL(acpi_register_ioapic); |
697 | ||
4be44fcd | 698 | int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base) |
b1bb248a KK |
699 | { |
700 | /* TBD */ | |
701 | return -EINVAL; | |
702 | } | |
4be44fcd | 703 | |
b1bb248a KK |
704 | EXPORT_SYMBOL(acpi_unregister_ioapic); |
705 | ||
5f3b1a8b | 706 | static int __init acpi_parse_sbf(struct acpi_table_header *table) |
1da177e4 | 707 | { |
5f3b1a8b | 708 | struct acpi_table_boot *sb; |
1da177e4 | 709 | |
5f3b1a8b | 710 | sb = (struct acpi_table_boot *)table; |
1da177e4 LT |
711 | if (!sb) { |
712 | printk(KERN_WARNING PREFIX "Unable to map SBF\n"); | |
713 | return -ENODEV; | |
714 | } | |
715 | ||
5f3b1a8b | 716 | sbf_port = sb->cmos_index; /* Save CMOS port */ |
1da177e4 LT |
717 | |
718 | return 0; | |
719 | } | |
720 | ||
1da177e4 | 721 | #ifdef CONFIG_HPET_TIMER |
2d0c87c3 | 722 | #include <asm/hpet.h> |
1da177e4 | 723 | |
a1dfd851 AD |
724 | static struct __initdata resource *hpet_res; |
725 | ||
5f3b1a8b | 726 | static int __init acpi_parse_hpet(struct acpi_table_header *table) |
1da177e4 LT |
727 | { |
728 | struct acpi_table_hpet *hpet_tbl; | |
729 | ||
5f3b1a8b | 730 | hpet_tbl = (struct acpi_table_hpet *)table; |
1da177e4 LT |
731 | if (!hpet_tbl) { |
732 | printk(KERN_WARNING PREFIX "Unable to map HPET\n"); | |
733 | return -ENODEV; | |
734 | } | |
735 | ||
ad363f80 | 736 | if (hpet_tbl->address.space_id != ACPI_SPACE_MEM) { |
1da177e4 LT |
737 | printk(KERN_WARNING PREFIX "HPET timers must be located in " |
738 | "memory.\n"); | |
739 | return -1; | |
740 | } | |
f0f4c343 | 741 | |
2d0c87c3 | 742 | hpet_address = hpet_tbl->address.address; |
c8bc6f3c | 743 | hpet_blockid = hpet_tbl->sequence; |
f4df73c2 TG |
744 | |
745 | /* | |
746 | * Some broken BIOSes advertise HPET at 0x0. We really do not | |
747 | * want to allocate a resource there. | |
748 | */ | |
749 | if (!hpet_address) { | |
750 | printk(KERN_WARNING PREFIX | |
751 | "HPET id: %#x base: %#lx is invalid\n", | |
752 | hpet_tbl->id, hpet_address); | |
753 | return 0; | |
754 | } | |
755 | #ifdef CONFIG_X86_64 | |
756 | /* | |
757 | * Some even more broken BIOSes advertise HPET at | |
758 | * 0xfed0000000000000 instead of 0xfed00000. Fix it up and add | |
759 | * some noise: | |
760 | */ | |
761 | if (hpet_address == 0xfed0000000000000UL) { | |
762 | if (!hpet_force_user) { | |
763 | printk(KERN_WARNING PREFIX "HPET id: %#x " | |
764 | "base: 0xfed0000000000000 is bogus\n " | |
765 | "try hpet=force on the kernel command line to " | |
766 | "fix it up to 0xfed00000.\n", hpet_tbl->id); | |
767 | hpet_address = 0; | |
768 | return 0; | |
769 | } | |
770 | printk(KERN_WARNING PREFIX | |
771 | "HPET id: %#x base: 0xfed0000000000000 fixed up " | |
772 | "to 0xfed00000.\n", hpet_tbl->id); | |
773 | hpet_address >>= 32; | |
774 | } | |
775 | #endif | |
4be44fcd | 776 | printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n", |
2d0c87c3 | 777 | hpet_tbl->id, hpet_address); |
1da177e4 | 778 | |
a1dfd851 AD |
779 | /* |
780 | * Allocate and initialize the HPET firmware resource for adding into | |
781 | * the resource tree during the lateinit timeframe. | |
782 | */ | |
783 | #define HPET_RESOURCE_NAME_SIZE 9 | |
784 | hpet_res = alloc_bootmem(sizeof(*hpet_res) + HPET_RESOURCE_NAME_SIZE); | |
785 | ||
a1dfd851 AD |
786 | hpet_res->name = (void *)&hpet_res[1]; |
787 | hpet_res->flags = IORESOURCE_MEM; | |
788 | snprintf((char *)hpet_res->name, HPET_RESOURCE_NAME_SIZE, "HPET %u", | |
789 | hpet_tbl->sequence); | |
790 | ||
791 | hpet_res->start = hpet_address; | |
792 | hpet_res->end = hpet_address + (1 * 1024) - 1; | |
793 | ||
1da177e4 LT |
794 | return 0; |
795 | } | |
a1dfd851 AD |
796 | |
797 | /* | |
798 | * hpet_insert_resource inserts the HPET resources used into the resource | |
799 | * tree. | |
800 | */ | |
801 | static __init int hpet_insert_resource(void) | |
802 | { | |
803 | if (!hpet_res) | |
804 | return 1; | |
805 | ||
806 | return insert_resource(&iomem_resource, hpet_res); | |
807 | } | |
808 | ||
809 | late_initcall(hpet_insert_resource); | |
810 | ||
1da177e4 LT |
811 | #else |
812 | #define acpi_parse_hpet NULL | |
813 | #endif | |
814 | ||
5f3b1a8b | 815 | static int __init acpi_parse_fadt(struct acpi_table_header *table) |
1da177e4 | 816 | { |
90660ec3 | 817 | |
1da177e4 LT |
818 | #ifdef CONFIG_X86_PM_TIMER |
819 | /* detect the location of the ACPI PM Timer */ | |
5f3b1a8b | 820 | if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID) { |
1da177e4 | 821 | /* FADT rev. 2 */ |
5f3b1a8b | 822 | if (acpi_gbl_FADT.xpm_timer_block.space_id != |
4be44fcd | 823 | ACPI_ADR_SPACE_SYSTEM_IO) |
1da177e4 LT |
824 | return 0; |
825 | ||
5f3b1a8b | 826 | pmtmr_ioport = acpi_gbl_FADT.xpm_timer_block.address; |
e6e87b4b DSL |
827 | /* |
828 | * "X" fields are optional extensions to the original V1.0 | |
829 | * fields, so we must selectively expand V1.0 fields if the | |
830 | * corresponding X field is zero. | |
831 | */ | |
832 | if (!pmtmr_ioport) | |
5f3b1a8b | 833 | pmtmr_ioport = acpi_gbl_FADT.pm_timer_block; |
1da177e4 LT |
834 | } else { |
835 | /* FADT rev. 1 */ | |
5f3b1a8b | 836 | pmtmr_ioport = acpi_gbl_FADT.pm_timer_block; |
1da177e4 LT |
837 | } |
838 | if (pmtmr_ioport) | |
4be44fcd LB |
839 | printk(KERN_INFO PREFIX "PM-Timer IO Port: %#x\n", |
840 | pmtmr_ioport); | |
1da177e4 LT |
841 | #endif |
842 | return 0; | |
843 | } | |
844 | ||
1da177e4 LT |
845 | #ifdef CONFIG_X86_LOCAL_APIC |
846 | /* | |
847 | * Parse LAPIC entries in MADT | |
848 | * returns 0 on success, < 0 on error | |
849 | */ | |
31d2092e AS |
850 | |
851 | static void __init acpi_register_lapic_address(unsigned long address) | |
852 | { | |
853 | mp_lapic_addr = address; | |
854 | ||
855 | set_fixmap_nocache(FIX_APIC_BASE, address); | |
fb3bbd6a | 856 | if (boot_cpu_physical_apicid == -1U) { |
4c9961d5 | 857 | boot_cpu_physical_apicid = read_apic_id(); |
fb3bbd6a YL |
858 | apic_version[boot_cpu_physical_apicid] = |
859 | GET_APIC_VERSION(apic_read(APIC_LVR)); | |
fb3bbd6a | 860 | } |
31d2092e AS |
861 | } |
862 | ||
cbf9bd60 YL |
863 | static int __init early_acpi_parse_madt_lapic_addr_ovr(void) |
864 | { | |
865 | int count; | |
866 | ||
867 | if (!cpu_has_apic) | |
868 | return -ENODEV; | |
869 | ||
870 | /* | |
871 | * Note that the LAPIC address is obtained from the MADT (32-bit value) | |
872 | * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value). | |
873 | */ | |
874 | ||
875 | count = | |
876 | acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE, | |
877 | acpi_parse_lapic_addr_ovr, 0); | |
878 | if (count < 0) { | |
879 | printk(KERN_ERR PREFIX | |
880 | "Error parsing LAPIC address override entry\n"); | |
881 | return count; | |
882 | } | |
883 | ||
884 | acpi_register_lapic_address(acpi_lapic_addr); | |
885 | ||
886 | return count; | |
887 | } | |
888 | ||
4be44fcd | 889 | static int __init acpi_parse_madt_lapic_entries(void) |
1da177e4 LT |
890 | { |
891 | int count; | |
7237d3de | 892 | int x2count = 0; |
1da177e4 | 893 | |
0fcd2709 AK |
894 | if (!cpu_has_apic) |
895 | return -ENODEV; | |
896 | ||
5f3b1a8b | 897 | /* |
1da177e4 LT |
898 | * Note that the LAPIC address is obtained from the MADT (32-bit value) |
899 | * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value). | |
900 | */ | |
901 | ||
4be44fcd | 902 | count = |
5f3b1a8b | 903 | acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE, |
4be44fcd | 904 | acpi_parse_lapic_addr_ovr, 0); |
1da177e4 | 905 | if (count < 0) { |
4be44fcd LB |
906 | printk(KERN_ERR PREFIX |
907 | "Error parsing LAPIC address override entry\n"); | |
1da177e4 LT |
908 | return count; |
909 | } | |
910 | ||
31d2092e | 911 | acpi_register_lapic_address(acpi_lapic_addr); |
1da177e4 | 912 | |
ac049c1d JS |
913 | count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_SAPIC, |
914 | acpi_parse_sapic, MAX_APICS); | |
915 | ||
7237d3de SS |
916 | if (!count) { |
917 | x2count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC, | |
918 | acpi_parse_x2apic, MAX_APICS); | |
ac049c1d JS |
919 | count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC, |
920 | acpi_parse_lapic, MAX_APICS); | |
7237d3de SS |
921 | } |
922 | if (!count && !x2count) { | |
1da177e4 LT |
923 | printk(KERN_ERR PREFIX "No LAPIC entries present\n"); |
924 | /* TBD: Cleanup to allow fallback to MPS */ | |
925 | return -ENODEV; | |
7237d3de | 926 | } else if (count < 0 || x2count < 0) { |
1da177e4 LT |
927 | printk(KERN_ERR PREFIX "Error parsing LAPIC entry\n"); |
928 | /* TBD: Cleanup to allow fallback to MPS */ | |
929 | return count; | |
930 | } | |
931 | ||
7237d3de SS |
932 | x2count = |
933 | acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC_NMI, | |
934 | acpi_parse_x2apic_nmi, 0); | |
4be44fcd | 935 | count = |
5f3b1a8b | 936 | acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI, acpi_parse_lapic_nmi, 0); |
7237d3de | 937 | if (count < 0 || x2count < 0) { |
1da177e4 LT |
938 | printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n"); |
939 | /* TBD: Cleanup to allow fallback to MPS */ | |
940 | return count; | |
941 | } | |
942 | return 0; | |
943 | } | |
4be44fcd | 944 | #endif /* CONFIG_X86_LOCAL_APIC */ |
1da177e4 | 945 | |
8466361a | 946 | #ifdef CONFIG_X86_IO_APIC |
11113f84 AS |
947 | #define MP_ISA_BUS 0 |
948 | ||
d49c4288 | 949 | #ifdef CONFIG_X86_ES7000 |
11113f84 AS |
950 | extern int es7000_plat; |
951 | #endif | |
952 | ||
c2c21745 JSR |
953 | static void assign_to_mp_irq(struct mpc_intsrc *m, |
954 | struct mpc_intsrc *mp_irq) | |
fcfa146e | 955 | { |
c2c21745 | 956 | memcpy(mp_irq, m, sizeof(struct mpc_intsrc)); |
fcfa146e YL |
957 | } |
958 | ||
c2c21745 JSR |
959 | static int mp_irq_cmp(struct mpc_intsrc *mp_irq, |
960 | struct mpc_intsrc *m) | |
fcfa146e | 961 | { |
c2c21745 | 962 | return memcmp(mp_irq, m, sizeof(struct mpc_intsrc)); |
fcfa146e YL |
963 | } |
964 | ||
c2c21745 | 965 | static void save_mp_irq(struct mpc_intsrc *m) |
fcfa146e YL |
966 | { |
967 | int i; | |
968 | ||
969 | for (i = 0; i < mp_irq_entries; i++) { | |
970 | if (!mp_irq_cmp(&mp_irqs[i], m)) | |
971 | return; | |
972 | } | |
973 | ||
974 | assign_to_mp_irq(m, &mp_irqs[mp_irq_entries]); | |
975 | if (++mp_irq_entries == MAX_IRQ_SOURCES) | |
976 | panic("Max # of irq sources exceeded!!\n"); | |
977 | } | |
978 | ||
11113f84 AS |
979 | void __init mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger, u32 gsi) |
980 | { | |
6df8809b YL |
981 | int ioapic; |
982 | int pin; | |
c2c21745 | 983 | struct mpc_intsrc mp_irq; |
11113f84 AS |
984 | |
985 | /* | |
986 | * Convert 'gsi' to 'ioapic.pin'. | |
987 | */ | |
988 | ioapic = mp_find_ioapic(gsi); | |
989 | if (ioapic < 0) | |
990 | return; | |
c3e137d1 | 991 | pin = mp_find_ioapic_pin(ioapic, gsi); |
11113f84 AS |
992 | |
993 | /* | |
994 | * TBD: This check is for faulty timer entries, where the override | |
995 | * erroneously sets the trigger to level, resulting in a HUGE | |
996 | * increase of timer interrupts! | |
997 | */ | |
998 | if ((bus_irq == 0) && (trigger == 3)) | |
999 | trigger = 1; | |
1000 | ||
c2c21745 JSR |
1001 | mp_irq.type = MP_INTSRC; |
1002 | mp_irq.irqtype = mp_INT; | |
1003 | mp_irq.irqflag = (trigger << 2) | polarity; | |
1004 | mp_irq.srcbus = MP_ISA_BUS; | |
1005 | mp_irq.srcbusirq = bus_irq; /* IRQ */ | |
1006 | mp_irq.dstapic = mp_ioapics[ioapic].apicid; /* APIC ID */ | |
1007 | mp_irq.dstirq = pin; /* INTIN# */ | |
11113f84 | 1008 | |
fcfa146e | 1009 | save_mp_irq(&mp_irq); |
988856ee EB |
1010 | |
1011 | isa_irq_to_gsi[bus_irq] = gsi; | |
11113f84 AS |
1012 | } |
1013 | ||
1014 | void __init mp_config_acpi_legacy_irqs(void) | |
1015 | { | |
6df8809b | 1016 | int i; |
c2c21745 | 1017 | struct mpc_intsrc mp_irq; |
11113f84 AS |
1018 | |
1019 | #if defined (CONFIG_MCA) || defined (CONFIG_EISA) | |
1020 | /* | |
1021 | * Fabricate the legacy ISA bus (bus #31). | |
1022 | */ | |
1023 | mp_bus_id_to_type[MP_ISA_BUS] = MP_BUS_ISA; | |
1024 | #endif | |
1025 | set_bit(MP_ISA_BUS, mp_bus_not_pci); | |
cfc1b9a6 | 1026 | pr_debug("Bus #%d is ISA\n", MP_ISA_BUS); |
11113f84 | 1027 | |
d49c4288 | 1028 | #ifdef CONFIG_X86_ES7000 |
11113f84 AS |
1029 | /* |
1030 | * Older generations of ES7000 have no legacy identity mappings | |
1031 | */ | |
1032 | if (es7000_plat == 1) | |
1033 | return; | |
1034 | #endif | |
1035 | ||
11113f84 AS |
1036 | /* |
1037 | * Use the default configuration for the IRQs 0-15. Unless | |
1038 | * overridden by (MADT) interrupt source override entries. | |
1039 | */ | |
1040 | for (i = 0; i < 16; i++) { | |
0fd52670 EB |
1041 | int ioapic, pin; |
1042 | unsigned int dstapic; | |
11113f84 | 1043 | int idx; |
0fd52670 EB |
1044 | u32 gsi; |
1045 | ||
1046 | /* Locate the gsi that irq i maps to. */ | |
1047 | if (acpi_isa_irq_to_gsi(i, &gsi)) | |
1048 | continue; | |
1049 | ||
1050 | /* | |
1051 | * Locate the IOAPIC that manages the ISA IRQ. | |
1052 | */ | |
1053 | ioapic = mp_find_ioapic(gsi); | |
1054 | if (ioapic < 0) | |
1055 | continue; | |
1056 | pin = mp_find_ioapic_pin(ioapic, gsi); | |
1057 | dstapic = mp_ioapics[ioapic].apicid; | |
11113f84 AS |
1058 | |
1059 | for (idx = 0; idx < mp_irq_entries; idx++) { | |
c2c21745 | 1060 | struct mpc_intsrc *irq = mp_irqs + idx; |
11113f84 AS |
1061 | |
1062 | /* Do we already have a mapping for this ISA IRQ? */ | |
c2c21745 | 1063 | if (irq->srcbus == MP_ISA_BUS && irq->srcbusirq == i) |
11113f84 AS |
1064 | break; |
1065 | ||
1066 | /* Do we already have a mapping for this IOAPIC pin */ | |
0fd52670 | 1067 | if (irq->dstapic == dstapic && irq->dstirq == pin) |
11113f84 AS |
1068 | break; |
1069 | } | |
1070 | ||
1071 | if (idx != mp_irq_entries) { | |
1072 | printk(KERN_DEBUG "ACPI: IRQ%d used by override.\n", i); | |
1073 | continue; /* IRQ already used */ | |
1074 | } | |
1075 | ||
c2c21745 JSR |
1076 | mp_irq.type = MP_INTSRC; |
1077 | mp_irq.irqflag = 0; /* Conforming */ | |
1078 | mp_irq.srcbus = MP_ISA_BUS; | |
1079 | mp_irq.dstapic = dstapic; | |
1080 | mp_irq.irqtype = mp_INT; | |
1081 | mp_irq.srcbusirq = i; /* Identity mapped */ | |
0fd52670 | 1082 | mp_irq.dstirq = pin; |
11113f84 | 1083 | |
fcfa146e | 1084 | save_mp_irq(&mp_irq); |
11113f84 AS |
1085 | } |
1086 | } | |
1087 | ||
e5198075 | 1088 | static int mp_config_acpi_gsi(struct device *dev, u32 gsi, int trigger, |
a31f8205 YL |
1089 | int polarity) |
1090 | { | |
1091 | #ifdef CONFIG_X86_MPPARSE | |
1092 | struct mpc_intsrc mp_irq; | |
1093 | struct pci_dev *pdev; | |
1094 | unsigned char number; | |
1095 | unsigned int devfn; | |
1096 | int ioapic; | |
1097 | u8 pin; | |
1098 | ||
1099 | if (!acpi_ioapic) | |
1100 | return 0; | |
1101 | if (!dev) | |
1102 | return 0; | |
1103 | if (dev->bus != &pci_bus_type) | |
1104 | return 0; | |
1105 | ||
1106 | pdev = to_pci_dev(dev); | |
1107 | number = pdev->bus->number; | |
1108 | devfn = pdev->devfn; | |
1109 | pin = pdev->pin; | |
1110 | /* print the entry should happen on mptable identically */ | |
1111 | mp_irq.type = MP_INTSRC; | |
1112 | mp_irq.irqtype = mp_INT; | |
e5198075 | 1113 | mp_irq.irqflag = (trigger == ACPI_EDGE_SENSITIVE ? 4 : 0x0c) | |
a31f8205 YL |
1114 | (polarity == ACPI_ACTIVE_HIGH ? 1 : 3); |
1115 | mp_irq.srcbus = number; | |
1116 | mp_irq.srcbusirq = (((devfn >> 3) & 0x1f) << 2) | ((pin - 1) & 3); | |
1117 | ioapic = mp_find_ioapic(gsi); | |
bdfe8ac1 | 1118 | mp_irq.dstapic = mp_ioapics[ioapic].apicid; |
a31f8205 YL |
1119 | mp_irq.dstirq = mp_find_ioapic_pin(ioapic, gsi); |
1120 | ||
1121 | save_mp_irq(&mp_irq); | |
1122 | #endif | |
1123 | return 0; | |
1124 | } | |
1125 | ||
e5198075 | 1126 | int mp_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity) |
11113f84 AS |
1127 | { |
1128 | int ioapic; | |
1129 | int ioapic_pin; | |
e5198075 | 1130 | struct io_apic_irq_attr irq_attr; |
11113f84 AS |
1131 | |
1132 | if (acpi_irq_model != ACPI_IRQ_MODEL_IOAPIC) | |
1133 | return gsi; | |
11113f84 AS |
1134 | |
1135 | /* Don't set up the ACPI SCI because it's already set up */ | |
1136 | if (acpi_gbl_FADT.sci_interrupt == gsi) | |
1137 | return gsi; | |
1138 | ||
1139 | ioapic = mp_find_ioapic(gsi); | |
1140 | if (ioapic < 0) { | |
1141 | printk(KERN_WARNING "No IOAPIC for GSI %u\n", gsi); | |
1142 | return gsi; | |
1143 | } | |
1144 | ||
c3e137d1 | 1145 | ioapic_pin = mp_find_ioapic_pin(ioapic, gsi); |
11113f84 | 1146 | |
11113f84 AS |
1147 | if (ioapic_pin > MP_MAX_IOAPIC_PIN) { |
1148 | printk(KERN_ERR "Invalid reference to IOAPIC pin " | |
bdfe8ac1 | 1149 | "%d-%d\n", mp_ioapics[ioapic].apicid, |
11113f84 AS |
1150 | ioapic_pin); |
1151 | return gsi; | |
1152 | } | |
f1bdb523 YL |
1153 | |
1154 | if (enable_update_mptable) | |
1155 | mp_config_acpi_gsi(dev, gsi, trigger, polarity); | |
b9e0353f | 1156 | |
e5198075 YL |
1157 | set_io_apic_irq_attr(&irq_attr, ioapic, ioapic_pin, |
1158 | trigger == ACPI_EDGE_SENSITIVE ? 0 : 1, | |
1159 | polarity == ACPI_ACTIVE_HIGH ? 0 : 1); | |
988856ee | 1160 | io_apic_set_pci_routing(dev, gsi_to_irq(gsi), &irq_attr); |
b9e0353f | 1161 | |
11113f84 AS |
1162 | return gsi; |
1163 | } | |
1164 | ||
1da177e4 LT |
1165 | /* |
1166 | * Parse IOAPIC related entries in MADT | |
1167 | * returns 0 on success, < 0 on error | |
1168 | */ | |
4be44fcd | 1169 | static int __init acpi_parse_madt_ioapic_entries(void) |
1da177e4 LT |
1170 | { |
1171 | int count; | |
1172 | ||
1173 | /* | |
1174 | * ACPI interpreter is required to complete interrupt setup, | |
1175 | * so if it is off, don't enumerate the io-apics with ACPI. | |
1176 | * If MPS is present, it will handle them, | |
1177 | * otherwise the system will stay in PIC mode | |
1178 | */ | |
6b2b171a | 1179 | if (acpi_disabled || acpi_noirq) |
1da177e4 | 1180 | return -ENODEV; |
1da177e4 | 1181 | |
5f3b1a8b | 1182 | if (!cpu_has_apic) |
d3b6a349 AK |
1183 | return -ENODEV; |
1184 | ||
1da177e4 | 1185 | /* |
4be44fcd | 1186 | * if "noapic" boot option, don't look for IO-APICs |
1da177e4 LT |
1187 | */ |
1188 | if (skip_ioapic_setup) { | |
1189 | printk(KERN_INFO PREFIX "Skipping IOAPIC probe " | |
4be44fcd | 1190 | "due to 'noapic' option.\n"); |
1da177e4 LT |
1191 | return -ENODEV; |
1192 | } | |
1193 | ||
4be44fcd | 1194 | count = |
5f3b1a8b | 1195 | acpi_table_parse_madt(ACPI_MADT_TYPE_IO_APIC, acpi_parse_ioapic, |
4be44fcd | 1196 | MAX_IO_APICS); |
1da177e4 LT |
1197 | if (!count) { |
1198 | printk(KERN_ERR PREFIX "No IOAPIC entries present\n"); | |
1199 | return -ENODEV; | |
4be44fcd | 1200 | } else if (count < 0) { |
1da177e4 LT |
1201 | printk(KERN_ERR PREFIX "Error parsing IOAPIC entry\n"); |
1202 | return count; | |
1203 | } | |
1204 | ||
4be44fcd | 1205 | count = |
5f3b1a8b | 1206 | acpi_table_parse_madt(ACPI_MADT_TYPE_INTERRUPT_OVERRIDE, acpi_parse_int_src_ovr, |
71f521bb | 1207 | nr_irqs); |
1da177e4 | 1208 | if (count < 0) { |
4be44fcd LB |
1209 | printk(KERN_ERR PREFIX |
1210 | "Error parsing interrupt source overrides entry\n"); | |
1da177e4 LT |
1211 | /* TBD: Cleanup to allow fallback to MPS */ |
1212 | return count; | |
1213 | } | |
1214 | ||
1215 | /* | |
1216 | * If BIOS did not supply an INT_SRC_OVR for the SCI | |
1217 | * pretend we got one so we can set the SCI flags. | |
1218 | */ | |
1219 | if (!acpi_sci_override_gsi) | |
9d2062b8 EB |
1220 | acpi_sci_ioapic_setup(acpi_gbl_FADT.sci_interrupt, 0, 0, |
1221 | acpi_gbl_FADT.sci_interrupt); | |
1da177e4 | 1222 | |
af901ca1 | 1223 | /* Fill in identity legacy mappings where no override */ |
1da177e4 LT |
1224 | mp_config_acpi_legacy_irqs(); |
1225 | ||
4be44fcd | 1226 | count = |
5f3b1a8b | 1227 | acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE, acpi_parse_nmi_src, |
71f521bb | 1228 | nr_irqs); |
1da177e4 LT |
1229 | if (count < 0) { |
1230 | printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n"); | |
1231 | /* TBD: Cleanup to allow fallback to MPS */ | |
1232 | return count; | |
1233 | } | |
1234 | ||
1235 | return 0; | |
1236 | } | |
1237 | #else | |
1238 | static inline int acpi_parse_madt_ioapic_entries(void) | |
1239 | { | |
1240 | return -1; | |
1241 | } | |
8466361a | 1242 | #endif /* !CONFIG_X86_IO_APIC */ |
1da177e4 | 1243 | |
cbf9bd60 YL |
1244 | static void __init early_acpi_process_madt(void) |
1245 | { | |
1246 | #ifdef CONFIG_X86_LOCAL_APIC | |
1247 | int error; | |
1248 | ||
1249 | if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) { | |
1250 | ||
1251 | /* | |
1252 | * Parse MADT LAPIC entries | |
1253 | */ | |
1254 | error = early_acpi_parse_madt_lapic_addr_ovr(); | |
1255 | if (!error) { | |
1256 | acpi_lapic = 1; | |
1257 | smp_found_config = 1; | |
1258 | } | |
1259 | if (error == -EINVAL) { | |
1260 | /* | |
1261 | * Dell Precision Workstation 410, 610 come here. | |
1262 | */ | |
1263 | printk(KERN_ERR PREFIX | |
1264 | "Invalid BIOS MADT, disabling ACPI\n"); | |
1265 | disable_acpi(); | |
1266 | } | |
1267 | } | |
1268 | #endif | |
1269 | } | |
1270 | ||
4be44fcd | 1271 | static void __init acpi_process_madt(void) |
1da177e4 LT |
1272 | { |
1273 | #ifdef CONFIG_X86_LOCAL_APIC | |
7f8f97c3 | 1274 | int error; |
1da177e4 | 1275 | |
7f8f97c3 | 1276 | if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) { |
1da177e4 LT |
1277 | |
1278 | /* | |
1279 | * Parse MADT LAPIC entries | |
1280 | */ | |
1281 | error = acpi_parse_madt_lapic_entries(); | |
1282 | if (!error) { | |
1283 | acpi_lapic = 1; | |
1284 | ||
1285 | /* | |
1286 | * Parse MADT IO-APIC entries | |
1287 | */ | |
1288 | error = acpi_parse_madt_ioapic_entries(); | |
1289 | if (!error) { | |
2f065aef | 1290 | acpi_set_irq_model_ioapic(); |
1da177e4 LT |
1291 | |
1292 | smp_found_config = 1; | |
1da177e4 LT |
1293 | } |
1294 | } | |
1295 | if (error == -EINVAL) { | |
1296 | /* | |
1297 | * Dell Precision Workstation 410, 610 come here. | |
1298 | */ | |
4be44fcd LB |
1299 | printk(KERN_ERR PREFIX |
1300 | "Invalid BIOS MADT, disabling ACPI\n"); | |
1da177e4 LT |
1301 | disable_acpi(); |
1302 | } | |
7b37b5fd LB |
1303 | } else { |
1304 | /* | |
1305 | * ACPI found no MADT, and so ACPI wants UP PIC mode. | |
1306 | * In the event an MPS table was found, forget it. | |
1307 | * Boot with "acpi=off" to use MPS on such a system. | |
1308 | */ | |
1309 | if (smp_found_config) { | |
1310 | printk(KERN_WARNING PREFIX | |
1311 | "No APIC-table, disabling MPS\n"); | |
1312 | smp_found_config = 0; | |
1313 | } | |
1da177e4 | 1314 | } |
69b88afa YL |
1315 | |
1316 | /* | |
1317 | * ACPI supports both logical (e.g. Hyper-Threading) and physical | |
1318 | * processors, where MPS only supports physical. | |
1319 | */ | |
1320 | if (acpi_lapic && acpi_ioapic) | |
1321 | printk(KERN_INFO "Using ACPI (MADT) for SMP configuration " | |
1322 | "information\n"); | |
1323 | else if (acpi_lapic) | |
1324 | printk(KERN_INFO "Using ACPI for processor (LAPIC) " | |
1325 | "configuration information\n"); | |
1da177e4 LT |
1326 | #endif |
1327 | return; | |
1328 | } | |
1329 | ||
1855256c | 1330 | static int __init disable_acpi_irq(const struct dmi_system_id *d) |
aea00143 AP |
1331 | { |
1332 | if (!acpi_force) { | |
1333 | printk(KERN_NOTICE "%s detected: force use of acpi=noirq\n", | |
1334 | d->ident); | |
1335 | acpi_noirq_set(); | |
1336 | } | |
1337 | return 0; | |
1338 | } | |
1339 | ||
1855256c | 1340 | static int __init disable_acpi_pci(const struct dmi_system_id *d) |
aea00143 AP |
1341 | { |
1342 | if (!acpi_force) { | |
1343 | printk(KERN_NOTICE "%s detected: force use of pci=noacpi\n", | |
1344 | d->ident); | |
1345 | acpi_disable_pci(); | |
1346 | } | |
1347 | return 0; | |
1348 | } | |
aea00143 | 1349 | |
1855256c | 1350 | static int __init dmi_disable_acpi(const struct dmi_system_id *d) |
aea00143 AP |
1351 | { |
1352 | if (!acpi_force) { | |
4be44fcd | 1353 | printk(KERN_NOTICE "%s detected: acpi off\n", d->ident); |
aea00143 AP |
1354 | disable_acpi(); |
1355 | } else { | |
1356 | printk(KERN_NOTICE | |
1357 | "Warning: DMI blacklist says broken, but acpi forced\n"); | |
1358 | } | |
1359 | return 0; | |
1360 | } | |
1361 | ||
e2079c43 RW |
1362 | /* |
1363 | * Force ignoring BIOS IRQ0 pin2 override | |
1364 | */ | |
1365 | static int __init dmi_ignore_irq0_timer_override(const struct dmi_system_id *d) | |
1366 | { | |
8d89adf4 IM |
1367 | /* |
1368 | * The ati_ixp4x0_rev() early PCI quirk should have set | |
1369 | * the acpi_skip_timer_override flag already: | |
1370 | */ | |
1371 | if (!acpi_skip_timer_override) { | |
1372 | WARN(1, KERN_ERR "ati_ixp4x0 quirk not complete.\n"); | |
1373 | pr_notice("%s detected: Ignoring BIOS IRQ0 pin2 override\n", | |
1374 | d->ident); | |
1375 | acpi_skip_timer_override = 1; | |
1376 | } | |
e2079c43 RW |
1377 | return 0; |
1378 | } | |
1379 | ||
aea00143 AP |
1380 | /* |
1381 | * If your system is blacklisted here, but you find that acpi=force | |
5b4c0b6f | 1382 | * works for you, please contact linux-acpi@vger.kernel.org |
aea00143 AP |
1383 | */ |
1384 | static struct dmi_system_id __initdata acpi_dmi_table[] = { | |
1385 | /* | |
1386 | * Boxes that need ACPI disabled | |
1387 | */ | |
1388 | { | |
4be44fcd LB |
1389 | .callback = dmi_disable_acpi, |
1390 | .ident = "IBM Thinkpad", | |
1391 | .matches = { | |
1392 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), | |
1393 | DMI_MATCH(DMI_BOARD_NAME, "2629H1G"), | |
1394 | }, | |
1395 | }, | |
aea00143 | 1396 | |
aea00143 AP |
1397 | /* |
1398 | * Boxes that need ACPI PCI IRQ routing disabled | |
1399 | */ | |
1400 | { | |
4be44fcd LB |
1401 | .callback = disable_acpi_irq, |
1402 | .ident = "ASUS A7V", | |
1403 | .matches = { | |
1404 | DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC"), | |
1405 | DMI_MATCH(DMI_BOARD_NAME, "<A7V>"), | |
1406 | /* newer BIOS, Revision 1011, does work */ | |
1407 | DMI_MATCH(DMI_BIOS_VERSION, | |
1408 | "ASUS A7V ACPI BIOS Revision 1007"), | |
1409 | }, | |
1410 | }, | |
74586fca LB |
1411 | { |
1412 | /* | |
1413 | * Latest BIOS for IBM 600E (1.16) has bad pcinum | |
1414 | * for LPC bridge, which is needed for the PCI | |
1415 | * interrupt links to work. DSDT fix is in bug 5966. | |
1416 | * 2645, 2646 model numbers are shared with 600/600E/600X | |
1417 | */ | |
1418 | .callback = disable_acpi_irq, | |
1419 | .ident = "IBM Thinkpad 600 Series 2645", | |
1420 | .matches = { | |
1421 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), | |
1422 | DMI_MATCH(DMI_BOARD_NAME, "2645"), | |
1423 | }, | |
1424 | }, | |
1425 | { | |
1426 | .callback = disable_acpi_irq, | |
1427 | .ident = "IBM Thinkpad 600 Series 2646", | |
1428 | .matches = { | |
1429 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), | |
1430 | DMI_MATCH(DMI_BOARD_NAME, "2646"), | |
1431 | }, | |
1432 | }, | |
aea00143 AP |
1433 | /* |
1434 | * Boxes that need ACPI PCI IRQ routing and PCI scan disabled | |
1435 | */ | |
4be44fcd LB |
1436 | { /* _BBN 0 bug */ |
1437 | .callback = disable_acpi_pci, | |
1438 | .ident = "ASUS PR-DLS", | |
1439 | .matches = { | |
1440 | DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), | |
1441 | DMI_MATCH(DMI_BOARD_NAME, "PR-DLS"), | |
1442 | DMI_MATCH(DMI_BIOS_VERSION, | |
1443 | "ASUS PR-DLS ACPI BIOS Revision 1010"), | |
1444 | DMI_MATCH(DMI_BIOS_DATE, "03/21/2003") | |
1445 | }, | |
1446 | }, | |
aea00143 | 1447 | { |
4be44fcd LB |
1448 | .callback = disable_acpi_pci, |
1449 | .ident = "Acer TravelMate 36x Laptop", | |
1450 | .matches = { | |
1451 | DMI_MATCH(DMI_SYS_VENDOR, "Acer"), | |
1452 | DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 360"), | |
1453 | }, | |
1454 | }, | |
35af2821 AH |
1455 | {} |
1456 | }; | |
1457 | ||
1458 | /* second table for DMI checks that should run after early-quirks */ | |
1459 | static struct dmi_system_id __initdata acpi_dmi_table_late[] = { | |
e2079c43 RW |
1460 | /* |
1461 | * HP laptops which use a DSDT reporting as HP/SB400/10000, | |
1462 | * which includes some code which overrides all temperature | |
1463 | * trip points to 16C if the INTIN2 input of the I/O APIC | |
1464 | * is enabled. This input is incorrectly designated the | |
1465 | * ISA IRQ 0 via an interrupt source override even though | |
1466 | * it is wired to the output of the master 8259A and INTIN0 | |
1467 | * is not connected at all. Force ignoring BIOS IRQ0 pin2 | |
1468 | * override in that cases. | |
1469 | */ | |
e84956f9 RW |
1470 | { |
1471 | .callback = dmi_ignore_irq0_timer_override, | |
1472 | .ident = "HP nx6115 laptop", | |
1473 | .matches = { | |
1474 | DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), | |
1475 | DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6115"), | |
1476 | }, | |
1477 | }, | |
e2079c43 RW |
1478 | { |
1479 | .callback = dmi_ignore_irq0_timer_override, | |
1480 | .ident = "HP NX6125 laptop", | |
1481 | .matches = { | |
1482 | DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), | |
1483 | DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6125"), | |
1484 | }, | |
1485 | }, | |
1486 | { | |
1487 | .callback = dmi_ignore_irq0_timer_override, | |
1488 | .ident = "HP NX6325 laptop", | |
1489 | .matches = { | |
1490 | DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), | |
1491 | DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6325"), | |
1492 | }, | |
1493 | }, | |
e84956f9 RW |
1494 | { |
1495 | .callback = dmi_ignore_irq0_timer_override, | |
1496 | .ident = "HP 6715b laptop", | |
1497 | .matches = { | |
1498 | DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), | |
1499 | DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq 6715b"), | |
1500 | }, | |
1501 | }, | |
4be44fcd | 1502 | {} |
aea00143 AP |
1503 | }; |
1504 | ||
1da177e4 LT |
1505 | /* |
1506 | * acpi_boot_table_init() and acpi_boot_init() | |
1507 | * called from setup_arch(), always. | |
1508 | * 1. checksums all tables | |
1509 | * 2. enumerates lapics | |
1510 | * 3. enumerates io-apics | |
1511 | * | |
1512 | * acpi_table_init() is separate to allow reading SRAT without | |
1513 | * other side effects. | |
1514 | * | |
1515 | * side effects of acpi_boot_init: | |
1516 | * acpi_lapic = 1 if LAPIC found | |
1517 | * acpi_ioapic = 1 if IOAPIC found | |
1518 | * if (acpi_lapic && acpi_ioapic) smp_found_config = 1; | |
1519 | * if acpi_blacklisted() acpi_disabled = 1; | |
1520 | * acpi_irq_model=... | |
1521 | * ... | |
1da177e4 LT |
1522 | */ |
1523 | ||
8558e394 | 1524 | void __init acpi_boot_table_init(void) |
1da177e4 | 1525 | { |
aea00143 | 1526 | dmi_check_system(acpi_dmi_table); |
aea00143 | 1527 | |
1da177e4 LT |
1528 | /* |
1529 | * If acpi_disabled, bail out | |
1da177e4 | 1530 | */ |
68ca4069 | 1531 | if (acpi_disabled) |
8558e394 | 1532 | return; |
1da177e4 | 1533 | |
5f3b1a8b | 1534 | /* |
1da177e4 LT |
1535 | * Initialize the ACPI boot-time table parser. |
1536 | */ | |
8558e394 | 1537 | if (acpi_table_init()) { |
1da177e4 | 1538 | disable_acpi(); |
8558e394 | 1539 | return; |
1da177e4 | 1540 | } |
1da177e4 | 1541 | |
5f3b1a8b | 1542 | acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf); |
1da177e4 LT |
1543 | |
1544 | /* | |
1545 | * blacklist may disable ACPI entirely | |
1546 | */ | |
8558e394 | 1547 | if (acpi_blacklisted()) { |
1da177e4 LT |
1548 | if (acpi_force) { |
1549 | printk(KERN_WARNING PREFIX "acpi=force override\n"); | |
1550 | } else { | |
1551 | printk(KERN_WARNING PREFIX "Disabling ACPI support\n"); | |
1552 | disable_acpi(); | |
8558e394 | 1553 | return; |
1da177e4 LT |
1554 | } |
1555 | } | |
cbf9bd60 YL |
1556 | } |
1557 | ||
1558 | int __init early_acpi_boot_init(void) | |
1559 | { | |
1560 | /* | |
1561 | * If acpi_disabled, bail out | |
cbf9bd60 | 1562 | */ |
68ca4069 | 1563 | if (acpi_disabled) |
cbf9bd60 YL |
1564 | return 1; |
1565 | ||
1566 | /* | |
1567 | * Process the Multiple APIC Description Table (MADT), if present | |
1568 | */ | |
1569 | early_acpi_process_madt(); | |
1da177e4 LT |
1570 | |
1571 | return 0; | |
1572 | } | |
1573 | ||
1da177e4 LT |
1574 | int __init acpi_boot_init(void) |
1575 | { | |
35af2821 AH |
1576 | /* those are executed after early-quirks are executed */ |
1577 | dmi_check_system(acpi_dmi_table_late); | |
1578 | ||
1da177e4 LT |
1579 | /* |
1580 | * If acpi_disabled, bail out | |
1da177e4 | 1581 | */ |
68ca4069 | 1582 | if (acpi_disabled) |
4be44fcd | 1583 | return 1; |
1da177e4 | 1584 | |
5f3b1a8b | 1585 | acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf); |
1da177e4 LT |
1586 | |
1587 | /* | |
1588 | * set sci_int and PM timer address | |
1589 | */ | |
ceb6c468 | 1590 | acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt); |
1da177e4 LT |
1591 | |
1592 | /* | |
1593 | * Process the Multiple APIC Description Table (MADT), if present | |
1594 | */ | |
1595 | acpi_process_madt(); | |
1596 | ||
5f3b1a8b | 1597 | acpi_table_parse(ACPI_SIG_HPET, acpi_parse_hpet); |
1da177e4 | 1598 | |
b72d0db9 TG |
1599 | if (!acpi_noirq) |
1600 | x86_init.pci.init = pci_acpi_init; | |
1601 | ||
1da177e4 LT |
1602 | return 0; |
1603 | } | |
1a3f239d RR |
1604 | |
1605 | static int __init parse_acpi(char *arg) | |
1606 | { | |
1607 | if (!arg) | |
1608 | return -EINVAL; | |
1609 | ||
1610 | /* "acpi=off" disables both ACPI table parsing and interpreter */ | |
1611 | if (strcmp(arg, "off") == 0) { | |
1612 | disable_acpi(); | |
1613 | } | |
1614 | /* acpi=force to over-ride black-list */ | |
1615 | else if (strcmp(arg, "force") == 0) { | |
1616 | acpi_force = 1; | |
1a3f239d RR |
1617 | acpi_disabled = 0; |
1618 | } | |
1619 | /* acpi=strict disables out-of-spec workarounds */ | |
1620 | else if (strcmp(arg, "strict") == 0) { | |
1621 | acpi_strict = 1; | |
1622 | } | |
237889bf ZY |
1623 | /* acpi=rsdt use RSDT instead of XSDT */ |
1624 | else if (strcmp(arg, "rsdt") == 0) { | |
1625 | acpi_rsdt_forced = 1; | |
1626 | } | |
1a3f239d RR |
1627 | /* "acpi=noirq" disables ACPI interrupt routing */ |
1628 | else if (strcmp(arg, "noirq") == 0) { | |
1629 | acpi_noirq_set(); | |
aa2110cb LM |
1630 | } |
1631 | /* "acpi=copy_dsdt" copys DSDT */ | |
1632 | else if (strcmp(arg, "copy_dsdt") == 0) { | |
1633 | acpi_gbl_copy_dsdt_locally = 1; | |
1a3f239d RR |
1634 | } else { |
1635 | /* Core will printk when we return error. */ | |
1636 | return -EINVAL; | |
1637 | } | |
1638 | return 0; | |
1639 | } | |
1640 | early_param("acpi", parse_acpi); | |
1641 | ||
1642 | /* FIXME: Using pci= for an ACPI parameter is a travesty. */ | |
1643 | static int __init parse_pci(char *arg) | |
1644 | { | |
1645 | if (arg && strcmp(arg, "noacpi") == 0) | |
1646 | acpi_disable_pci(); | |
1647 | return 0; | |
1648 | } | |
1649 | early_param("pci", parse_pci); | |
1650 | ||
3c999f14 YL |
1651 | int __init acpi_mps_check(void) |
1652 | { | |
1653 | #if defined(CONFIG_X86_LOCAL_APIC) && !defined(CONFIG_X86_MPPARSE) | |
1654 | /* mptable code is not built-in*/ | |
1655 | if (acpi_disabled || acpi_noirq) { | |
1656 | printk(KERN_WARNING "MPS support code is not built-in.\n" | |
1657 | "Using acpi=off or acpi=noirq or pci=noacpi " | |
1658 | "may have problem\n"); | |
1659 | return 1; | |
1660 | } | |
1661 | #endif | |
1662 | return 0; | |
1663 | } | |
1664 | ||
1a3f239d RR |
1665 | #ifdef CONFIG_X86_IO_APIC |
1666 | static int __init parse_acpi_skip_timer_override(char *arg) | |
1667 | { | |
1668 | acpi_skip_timer_override = 1; | |
1669 | return 0; | |
1670 | } | |
1671 | early_param("acpi_skip_timer_override", parse_acpi_skip_timer_override); | |
fa18f477 AK |
1672 | |
1673 | static int __init parse_acpi_use_timer_override(char *arg) | |
1674 | { | |
1675 | acpi_use_timer_override = 1; | |
1676 | return 0; | |
1677 | } | |
1678 | early_param("acpi_use_timer_override", parse_acpi_use_timer_override); | |
1a3f239d RR |
1679 | #endif /* CONFIG_X86_IO_APIC */ |
1680 | ||
1681 | static int __init setup_acpi_sci(char *s) | |
1682 | { | |
1683 | if (!s) | |
1684 | return -EINVAL; | |
1685 | if (!strcmp(s, "edge")) | |
5f3b1a8b AS |
1686 | acpi_sci_flags = ACPI_MADT_TRIGGER_EDGE | |
1687 | (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK); | |
1a3f239d | 1688 | else if (!strcmp(s, "level")) |
5f3b1a8b AS |
1689 | acpi_sci_flags = ACPI_MADT_TRIGGER_LEVEL | |
1690 | (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK); | |
1a3f239d | 1691 | else if (!strcmp(s, "high")) |
5f3b1a8b AS |
1692 | acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_HIGH | |
1693 | (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK); | |
1a3f239d | 1694 | else if (!strcmp(s, "low")) |
5f3b1a8b AS |
1695 | acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_LOW | |
1696 | (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK); | |
1a3f239d RR |
1697 | else |
1698 | return -EINVAL; | |
1699 | return 0; | |
1700 | } | |
1701 | early_param("acpi_sci", setup_acpi_sci); | |
d0a9081b AM |
1702 | |
1703 | int __acpi_acquire_global_lock(unsigned int *lock) | |
1704 | { | |
1705 | unsigned int old, new, val; | |
1706 | do { | |
1707 | old = *lock; | |
1708 | new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1)); | |
1709 | val = cmpxchg(lock, old, new); | |
1710 | } while (unlikely (val != old)); | |
1711 | return (new < 3) ? -1 : 0; | |
1712 | } | |
1713 | ||
1714 | int __acpi_release_global_lock(unsigned int *lock) | |
1715 | { | |
1716 | unsigned int old, new, val; | |
1717 | do { | |
1718 | old = *lock; | |
1719 | new = old & ~0x3; | |
1720 | val = cmpxchg(lock, old, new); | |
1721 | } while (unlikely (val != old)); | |
1722 | return old & 0x1; | |
1723 | } |