Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * boot.c - Architecture-Specific Low-Level ACPI Boot Support | |
3 | * | |
4 | * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com> | |
5 | * Copyright (C) 2001 Jun Nakajima <jun.nakajima@intel.com> | |
6 | * | |
7 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
22 | * | |
23 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
24 | */ | |
25 | ||
26 | #include <linux/init.h> | |
1da177e4 | 27 | #include <linux/acpi.h> |
d66bea57 | 28 | #include <linux/acpi_pmtmr.h> |
1da177e4 | 29 | #include <linux/efi.h> |
73fea175 | 30 | #include <linux/cpumask.h> |
1da177e4 | 31 | #include <linux/module.h> |
aea00143 | 32 | #include <linux/dmi.h> |
b33fa1f3 | 33 | #include <linux/irq.h> |
5a0e3ad6 | 34 | #include <linux/slab.h> |
f0f4c343 AD |
35 | #include <linux/bootmem.h> |
36 | #include <linux/ioport.h> | |
a31f8205 | 37 | #include <linux/pci.h> |
1da177e4 | 38 | |
b72d0db9 | 39 | #include <asm/pci_x86.h> |
1da177e4 LT |
40 | #include <asm/pgtable.h> |
41 | #include <asm/io_apic.h> | |
42 | #include <asm/apic.h> | |
43 | #include <asm/io.h> | |
1da177e4 | 44 | #include <asm/mpspec.h> |
dfac2189 | 45 | #include <asm/smp.h> |
1da177e4 | 46 | |
e8924acb | 47 | static int __initdata acpi_force = 0; |
237889bf | 48 | u32 acpi_rsdt_forced; |
c636f753 | 49 | int acpi_disabled; |
df3bb57d AK |
50 | EXPORT_SYMBOL(acpi_disabled); |
51 | ||
1da177e4 | 52 | #ifdef CONFIG_X86_64 |
1dcdd3d1 | 53 | # include <asm/proto.h> |
0271f910 | 54 | # include <asm/numa_64.h> |
4be44fcd | 55 | #endif /* X86 */ |
1da177e4 LT |
56 | |
57 | #define BAD_MADT_ENTRY(entry, end) ( \ | |
58 | (!entry) || (unsigned long)entry + sizeof(*entry) > end || \ | |
5f3b1a8b | 59 | ((struct acpi_subtable_header *)entry)->length < sizeof(*entry)) |
1da177e4 LT |
60 | |
61 | #define PREFIX "ACPI: " | |
62 | ||
90d53909 | 63 | int acpi_noirq; /* skip ACPI IRQ initialization */ |
6e4be1ff YL |
64 | int acpi_pci_disabled; /* skip ACPI PCI scan and IRQ initialization */ |
65 | EXPORT_SYMBOL(acpi_pci_disabled); | |
1da177e4 LT |
66 | int acpi_ht __initdata = 1; /* enable HT */ |
67 | ||
68 | int acpi_lapic; | |
69 | int acpi_ioapic; | |
70 | int acpi_strict; | |
1da177e4 | 71 | |
5f3b1a8b | 72 | u8 acpi_sci_flags __initdata; |
1da177e4 LT |
73 | int acpi_sci_override_gsi __initdata; |
74 | int acpi_skip_timer_override __initdata; | |
fa18f477 | 75 | int acpi_use_timer_override __initdata; |
1da177e4 LT |
76 | |
77 | #ifdef CONFIG_X86_LOCAL_APIC | |
78 | static u64 acpi_lapic_addr __initdata = APIC_DEFAULT_PHYS_BASE; | |
79 | #endif | |
80 | ||
81 | #ifndef __HAVE_ARCH_CMPXCHG | |
82 | #warning ACPI uses CMPXCHG, i486 and later hardware | |
83 | #endif | |
84 | ||
1da177e4 LT |
85 | /* -------------------------------------------------------------------------- |
86 | Boot-time Configuration | |
87 | -------------------------------------------------------------------------- */ | |
88 | ||
89 | /* | |
90 | * The default interrupt routing model is PIC (8259). This gets | |
27b46d76 | 91 | * overridden if IOAPICs are enumerated (below). |
1da177e4 | 92 | */ |
4be44fcd | 93 | enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_PIC; |
1da177e4 | 94 | |
1da177e4 | 95 | |
988856ee EB |
96 | /* |
97 | * ISA irqs by default are the first 16 gsis but can be | |
98 | * any gsi as specified by an interrupt source override. | |
99 | */ | |
100 | static u32 isa_irq_to_gsi[NR_IRQS_LEGACY] __read_mostly = { | |
101 | 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 | |
102 | }; | |
103 | ||
104 | static unsigned int gsi_to_irq(unsigned int gsi) | |
105 | { | |
106 | unsigned int irq = gsi + NR_IRQS_LEGACY; | |
107 | unsigned int i; | |
108 | ||
109 | for (i = 0; i < NR_IRQS_LEGACY; i++) { | |
110 | if (isa_irq_to_gsi[i] == gsi) { | |
111 | return i; | |
112 | } | |
113 | } | |
114 | ||
115 | /* Provide an identity mapping of gsi == irq | |
116 | * except on truly weird platforms that have | |
117 | * non isa irqs in the first 16 gsis. | |
118 | */ | |
119 | if (gsi >= NR_IRQS_LEGACY) | |
120 | irq = gsi; | |
121 | else | |
122 | irq = gsi_end + 1 + gsi; | |
123 | ||
124 | return irq; | |
125 | } | |
126 | ||
127 | static u32 irq_to_gsi(int irq) | |
128 | { | |
129 | unsigned int gsi; | |
130 | ||
131 | if (irq < NR_IRQS_LEGACY) | |
132 | gsi = isa_irq_to_gsi[irq]; | |
133 | else if (irq <= gsi_end) | |
134 | gsi = irq; | |
135 | else if (irq <= (gsi_end + NR_IRQS_LEGACY)) | |
136 | gsi = irq - gsi_end; | |
137 | else | |
138 | gsi = 0xffffffff; | |
139 | ||
140 | return gsi; | |
141 | } | |
142 | ||
1da177e4 LT |
143 | /* |
144 | * Temporarily use the virtual area starting from FIX_IO_APIC_BASE_END, | |
145 | * to map the target physical address. The problem is that set_fixmap() | |
146 | * provides a single page, and it is possible that the page is not | |
147 | * sufficient. | |
148 | * By using this area, we can map up to MAX_IO_APICS pages temporarily, | |
149 | * i.e. until the next __va_range() call. | |
150 | * | |
151 | * Important Safety Note: The fixed I/O APIC page numbers are *subtracted* | |
152 | * from the fixed base. That's why we start at FIX_IO_APIC_BASE_END and | |
153 | * count idx down while incrementing the phys address. | |
154 | */ | |
2fdf0741 | 155 | char *__init __acpi_map_table(unsigned long phys, unsigned long size) |
1da177e4 | 156 | { |
1da177e4 | 157 | |
f34fa82b YL |
158 | if (!phys || !size) |
159 | return NULL; | |
160 | ||
7d97277b YL |
161 | return early_ioremap(phys, size); |
162 | } | |
163 | void __init __acpi_unmap_table(char *map, unsigned long size) | |
164 | { | |
165 | if (!map || !size) | |
166 | return; | |
1da177e4 | 167 | |
7d97277b | 168 | early_iounmap(map, size); |
1da177e4 | 169 | } |
1da177e4 | 170 | |
1da177e4 | 171 | #ifdef CONFIG_X86_LOCAL_APIC |
15a58ed1 | 172 | static int __init acpi_parse_madt(struct acpi_table_header *table) |
1da177e4 | 173 | { |
4be44fcd | 174 | struct acpi_table_madt *madt = NULL; |
1da177e4 | 175 | |
15a58ed1 | 176 | if (!cpu_has_apic) |
1da177e4 LT |
177 | return -EINVAL; |
178 | ||
15a58ed1 | 179 | madt = (struct acpi_table_madt *)table; |
1da177e4 LT |
180 | if (!madt) { |
181 | printk(KERN_WARNING PREFIX "Unable to map MADT\n"); | |
182 | return -ENODEV; | |
183 | } | |
184 | ||
ad363f80 AS |
185 | if (madt->address) { |
186 | acpi_lapic_addr = (u64) madt->address; | |
1da177e4 LT |
187 | |
188 | printk(KERN_DEBUG PREFIX "Local APIC address 0x%08x\n", | |
ad363f80 | 189 | madt->address); |
1da177e4 LT |
190 | } |
191 | ||
306db03b IM |
192 | default_acpi_madt_oem_check(madt->header.oem_id, |
193 | madt->header.oem_table_id); | |
4be44fcd | 194 | |
1da177e4 LT |
195 | return 0; |
196 | } | |
197 | ||
dfac2189 AS |
198 | static void __cpuinit acpi_register_lapic(int id, u8 enabled) |
199 | { | |
fb3bbd6a YL |
200 | unsigned int ver = 0; |
201 | ||
dfac2189 AS |
202 | if (!enabled) { |
203 | ++disabled_cpus; | |
204 | return; | |
205 | } | |
206 | ||
fb3bbd6a YL |
207 | if (boot_cpu_physical_apicid != -1U) |
208 | ver = apic_version[boot_cpu_physical_apicid]; | |
fb3bbd6a YL |
209 | |
210 | generic_processor_info(id, ver); | |
dfac2189 AS |
211 | } |
212 | ||
7237d3de SS |
213 | static int __init |
214 | acpi_parse_x2apic(struct acpi_subtable_header *header, const unsigned long end) | |
215 | { | |
216 | struct acpi_madt_local_x2apic *processor = NULL; | |
217 | ||
218 | processor = (struct acpi_madt_local_x2apic *)header; | |
219 | ||
220 | if (BAD_MADT_ENTRY(processor, end)) | |
221 | return -EINVAL; | |
222 | ||
223 | acpi_table_print_madt_entry(header); | |
224 | ||
225 | #ifdef CONFIG_X86_X2APIC | |
226 | /* | |
227 | * We need to register disabled CPU as well to permit | |
228 | * counting disabled CPUs. This allows us to size | |
229 | * cpus_possible_map more accurately, to permit | |
230 | * to not preallocating memory for all NR_CPUS | |
231 | * when we use CPU hotplug. | |
232 | */ | |
233 | acpi_register_lapic(processor->local_apic_id, /* APIC ID */ | |
234 | processor->lapic_flags & ACPI_MADT_ENABLED); | |
235 | #else | |
236 | printk(KERN_WARNING PREFIX "x2apic entry ignored\n"); | |
237 | #endif | |
238 | ||
239 | return 0; | |
240 | } | |
241 | ||
1da177e4 | 242 | static int __init |
5f3b1a8b | 243 | acpi_parse_lapic(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 244 | { |
5f3b1a8b | 245 | struct acpi_madt_local_apic *processor = NULL; |
1da177e4 | 246 | |
5f3b1a8b | 247 | processor = (struct acpi_madt_local_apic *)header; |
1da177e4 LT |
248 | |
249 | if (BAD_MADT_ENTRY(processor, end)) | |
250 | return -EINVAL; | |
251 | ||
252 | acpi_table_print_madt_entry(header); | |
253 | ||
7f66ae48 AR |
254 | /* |
255 | * We need to register disabled CPU as well to permit | |
256 | * counting disabled CPUs. This allows us to size | |
257 | * cpus_possible_map more accurately, to permit | |
258 | * to not preallocating memory for all NR_CPUS | |
259 | * when we use CPU hotplug. | |
260 | */ | |
dfac2189 AS |
261 | acpi_register_lapic(processor->id, /* APIC ID */ |
262 | processor->lapic_flags & ACPI_MADT_ENABLED); | |
1da177e4 LT |
263 | |
264 | return 0; | |
265 | } | |
266 | ||
ac049c1d JS |
267 | static int __init |
268 | acpi_parse_sapic(struct acpi_subtable_header *header, const unsigned long end) | |
269 | { | |
270 | struct acpi_madt_local_sapic *processor = NULL; | |
271 | ||
272 | processor = (struct acpi_madt_local_sapic *)header; | |
273 | ||
274 | if (BAD_MADT_ENTRY(processor, end)) | |
275 | return -EINVAL; | |
276 | ||
277 | acpi_table_print_madt_entry(header); | |
278 | ||
dfac2189 AS |
279 | acpi_register_lapic((processor->id << 8) | processor->eid,/* APIC ID */ |
280 | processor->lapic_flags & ACPI_MADT_ENABLED); | |
ac049c1d JS |
281 | |
282 | return 0; | |
283 | } | |
284 | ||
1da177e4 | 285 | static int __init |
5f3b1a8b | 286 | acpi_parse_lapic_addr_ovr(struct acpi_subtable_header * header, |
4be44fcd | 287 | const unsigned long end) |
1da177e4 | 288 | { |
5f3b1a8b | 289 | struct acpi_madt_local_apic_override *lapic_addr_ovr = NULL; |
1da177e4 | 290 | |
5f3b1a8b | 291 | lapic_addr_ovr = (struct acpi_madt_local_apic_override *)header; |
1da177e4 LT |
292 | |
293 | if (BAD_MADT_ENTRY(lapic_addr_ovr, end)) | |
294 | return -EINVAL; | |
295 | ||
296 | acpi_lapic_addr = lapic_addr_ovr->address; | |
297 | ||
298 | return 0; | |
299 | } | |
300 | ||
7237d3de SS |
301 | static int __init |
302 | acpi_parse_x2apic_nmi(struct acpi_subtable_header *header, | |
303 | const unsigned long end) | |
304 | { | |
305 | struct acpi_madt_local_x2apic_nmi *x2apic_nmi = NULL; | |
306 | ||
307 | x2apic_nmi = (struct acpi_madt_local_x2apic_nmi *)header; | |
308 | ||
309 | if (BAD_MADT_ENTRY(x2apic_nmi, end)) | |
310 | return -EINVAL; | |
311 | ||
312 | acpi_table_print_madt_entry(header); | |
313 | ||
314 | if (x2apic_nmi->lint != 1) | |
315 | printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n"); | |
316 | ||
317 | return 0; | |
318 | } | |
319 | ||
1da177e4 | 320 | static int __init |
5f3b1a8b | 321 | acpi_parse_lapic_nmi(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 322 | { |
5f3b1a8b | 323 | struct acpi_madt_local_apic_nmi *lapic_nmi = NULL; |
1da177e4 | 324 | |
5f3b1a8b | 325 | lapic_nmi = (struct acpi_madt_local_apic_nmi *)header; |
1da177e4 LT |
326 | |
327 | if (BAD_MADT_ENTRY(lapic_nmi, end)) | |
328 | return -EINVAL; | |
329 | ||
330 | acpi_table_print_madt_entry(header); | |
331 | ||
332 | if (lapic_nmi->lint != 1) | |
333 | printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n"); | |
334 | ||
335 | return 0; | |
336 | } | |
337 | ||
4be44fcd | 338 | #endif /*CONFIG_X86_LOCAL_APIC */ |
1da177e4 | 339 | |
8466361a | 340 | #ifdef CONFIG_X86_IO_APIC |
1da177e4 LT |
341 | |
342 | static int __init | |
5f3b1a8b | 343 | acpi_parse_ioapic(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 344 | { |
5f3b1a8b | 345 | struct acpi_madt_io_apic *ioapic = NULL; |
1da177e4 | 346 | |
5f3b1a8b | 347 | ioapic = (struct acpi_madt_io_apic *)header; |
1da177e4 LT |
348 | |
349 | if (BAD_MADT_ENTRY(ioapic, end)) | |
350 | return -EINVAL; | |
4be44fcd | 351 | |
1da177e4 LT |
352 | acpi_table_print_madt_entry(header); |
353 | ||
4be44fcd LB |
354 | mp_register_ioapic(ioapic->id, |
355 | ioapic->address, ioapic->global_irq_base); | |
356 | ||
1da177e4 LT |
357 | return 0; |
358 | } | |
359 | ||
360 | /* | |
361 | * Parse Interrupt Source Override for the ACPI SCI | |
362 | */ | |
9d2062b8 | 363 | static void __init acpi_sci_ioapic_setup(u8 bus_irq, u16 polarity, u16 trigger, u32 gsi) |
1da177e4 LT |
364 | { |
365 | if (trigger == 0) /* compatible SCI trigger is level */ | |
366 | trigger = 3; | |
367 | ||
368 | if (polarity == 0) /* compatible SCI polarity is low */ | |
369 | polarity = 3; | |
370 | ||
371 | /* Command-line over-ride via acpi_sci= */ | |
5f3b1a8b AS |
372 | if (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) |
373 | trigger = (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) >> 2; | |
1da177e4 | 374 | |
5f3b1a8b AS |
375 | if (acpi_sci_flags & ACPI_MADT_POLARITY_MASK) |
376 | polarity = acpi_sci_flags & ACPI_MADT_POLARITY_MASK; | |
1da177e4 LT |
377 | |
378 | /* | |
4be44fcd | 379 | * mp_config_acpi_legacy_irqs() already setup IRQs < 16 |
1da177e4 LT |
380 | * If GSI is < 16, this will update its flags, |
381 | * else it will create a new mp_irqs[] entry. | |
382 | */ | |
9d2062b8 | 383 | mp_override_legacy_irq(bus_irq, polarity, trigger, gsi); |
1da177e4 LT |
384 | |
385 | /* | |
386 | * stash over-ride to indicate we've been here | |
cee324b1 | 387 | * and for later update of acpi_gbl_FADT |
1da177e4 | 388 | */ |
7bdd21ce | 389 | acpi_sci_override_gsi = gsi; |
1da177e4 LT |
390 | return; |
391 | } | |
392 | ||
393 | static int __init | |
5f3b1a8b | 394 | acpi_parse_int_src_ovr(struct acpi_subtable_header * header, |
4be44fcd | 395 | const unsigned long end) |
1da177e4 | 396 | { |
5f3b1a8b | 397 | struct acpi_madt_interrupt_override *intsrc = NULL; |
1da177e4 | 398 | |
5f3b1a8b | 399 | intsrc = (struct acpi_madt_interrupt_override *)header; |
1da177e4 LT |
400 | |
401 | if (BAD_MADT_ENTRY(intsrc, end)) | |
402 | return -EINVAL; | |
403 | ||
404 | acpi_table_print_madt_entry(header); | |
405 | ||
5f3b1a8b | 406 | if (intsrc->source_irq == acpi_gbl_FADT.sci_interrupt) { |
9d2062b8 | 407 | acpi_sci_ioapic_setup(intsrc->source_irq, |
5f3b1a8b | 408 | intsrc->inti_flags & ACPI_MADT_POLARITY_MASK, |
9d2062b8 EB |
409 | (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2, |
410 | intsrc->global_irq); | |
1da177e4 LT |
411 | return 0; |
412 | } | |
413 | ||
414 | if (acpi_skip_timer_override && | |
5f3b1a8b | 415 | intsrc->source_irq == 0 && intsrc->global_irq == 2) { |
4be44fcd LB |
416 | printk(PREFIX "BIOS IRQ0 pin2 override ignored.\n"); |
417 | return 0; | |
1da177e4 LT |
418 | } |
419 | ||
5f3b1a8b AS |
420 | mp_override_legacy_irq(intsrc->source_irq, |
421 | intsrc->inti_flags & ACPI_MADT_POLARITY_MASK, | |
422 | (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2, | |
423 | intsrc->global_irq); | |
1da177e4 LT |
424 | |
425 | return 0; | |
426 | } | |
427 | ||
1da177e4 | 428 | static int __init |
5f3b1a8b | 429 | acpi_parse_nmi_src(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 430 | { |
5f3b1a8b | 431 | struct acpi_madt_nmi_source *nmi_src = NULL; |
1da177e4 | 432 | |
5f3b1a8b | 433 | nmi_src = (struct acpi_madt_nmi_source *)header; |
1da177e4 LT |
434 | |
435 | if (BAD_MADT_ENTRY(nmi_src, end)) | |
436 | return -EINVAL; | |
437 | ||
438 | acpi_table_print_madt_entry(header); | |
439 | ||
440 | /* TBD: Support nimsrc entries? */ | |
441 | ||
442 | return 0; | |
443 | } | |
444 | ||
4be44fcd | 445 | #endif /* CONFIG_X86_IO_APIC */ |
1da177e4 | 446 | |
1da177e4 LT |
447 | /* |
448 | * acpi_pic_sci_set_trigger() | |
5f3b1a8b | 449 | * |
1da177e4 LT |
450 | * use ELCR to set PIC-mode trigger type for SCI |
451 | * | |
452 | * If a PIC-mode SCI is not recognized or gives spurious IRQ7's | |
453 | * it may require Edge Trigger -- use "acpi_sci=edge" | |
454 | * | |
455 | * Port 0x4d0-4d1 are ECLR1 and ECLR2, the Edge/Level Control Registers | |
456 | * for the 8259 PIC. bit[n] = 1 means irq[n] is Level, otherwise Edge. | |
27b46d76 SA |
457 | * ECLR1 is IRQs 0-7 (IRQ 0, 1, 2 must be 0) |
458 | * ECLR2 is IRQs 8-15 (IRQ 8, 13 must be 0) | |
1da177e4 LT |
459 | */ |
460 | ||
4be44fcd | 461 | void __init acpi_pic_sci_set_trigger(unsigned int irq, u16 trigger) |
1da177e4 LT |
462 | { |
463 | unsigned int mask = 1 << irq; | |
464 | unsigned int old, new; | |
465 | ||
466 | /* Real old ELCR mask */ | |
467 | old = inb(0x4d0) | (inb(0x4d1) << 8); | |
468 | ||
469 | /* | |
27b46d76 | 470 | * If we use ACPI to set PCI IRQs, then we should clear ELCR |
1da177e4 LT |
471 | * since we will set it correctly as we enable the PCI irq |
472 | * routing. | |
473 | */ | |
474 | new = acpi_noirq ? old : 0; | |
475 | ||
476 | /* | |
477 | * Update SCI information in the ELCR, it isn't in the PCI | |
478 | * routing tables.. | |
479 | */ | |
480 | switch (trigger) { | |
4be44fcd | 481 | case 1: /* Edge - clear */ |
1da177e4 LT |
482 | new &= ~mask; |
483 | break; | |
4be44fcd | 484 | case 3: /* Level - set */ |
1da177e4 LT |
485 | new |= mask; |
486 | break; | |
487 | } | |
488 | ||
489 | if (old == new) | |
490 | return; | |
491 | ||
492 | printk(PREFIX "setting ELCR to %04x (from %04x)\n", new, old); | |
493 | outb(new, 0x4d0); | |
494 | outb(new >> 8, 0x4d1); | |
495 | } | |
496 | ||
1da177e4 LT |
497 | int acpi_gsi_to_irq(u32 gsi, unsigned int *irq) |
498 | { | |
988856ee | 499 | *irq = gsi_to_irq(gsi); |
18dce6ba YL |
500 | |
501 | #ifdef CONFIG_X86_IO_APIC | |
502 | if (acpi_irq_model == ACPI_IRQ_MODEL_IOAPIC) | |
503 | setup_IO_APIC_irq_extra(gsi); | |
504 | #endif | |
505 | ||
1da177e4 LT |
506 | return 0; |
507 | } | |
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 | ||
1f3a6a15 KK |
517 | /* |
518 | * success: return IRQ number (>=0) | |
519 | * failure: return < 0 | |
520 | */ | |
e5198075 | 521 | int acpi_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity) |
1da177e4 LT |
522 | { |
523 | unsigned int irq; | |
524 | unsigned int plat_gsi = gsi; | |
525 | ||
526 | #ifdef CONFIG_PCI | |
527 | /* | |
528 | * Make sure all (legacy) PCI IRQs are set as level-triggered. | |
529 | */ | |
530 | if (acpi_irq_model == ACPI_IRQ_MODEL_PIC) { | |
e5198075 | 531 | if (trigger == ACPI_LEVEL_SENSITIVE) |
4be44fcd | 532 | eisa_set_level_irq(gsi); |
1da177e4 LT |
533 | } |
534 | #endif | |
535 | ||
536 | #ifdef CONFIG_X86_IO_APIC | |
537 | if (acpi_irq_model == ACPI_IRQ_MODEL_IOAPIC) { | |
e5198075 | 538 | plat_gsi = mp_register_gsi(dev, gsi, trigger, polarity); |
1da177e4 LT |
539 | } |
540 | #endif | |
988856ee | 541 | irq = gsi_to_irq(plat_gsi); |
18dce6ba | 542 | |
1da177e4 LT |
543 | return irq; |
544 | } | |
4be44fcd | 545 | |
1da177e4 LT |
546 | /* |
547 | * ACPI based hotplug support for CPU | |
548 | */ | |
549 | #ifdef CONFIG_ACPI_HOTPLUG_CPU | |
d8191fa4 | 550 | #include <acpi/processor.h> |
009cbadb | 551 | |
0271f910 HL |
552 | static void acpi_map_cpu2node(acpi_handle handle, int cpu, int physid) |
553 | { | |
554 | #ifdef CONFIG_ACPI_NUMA | |
555 | int nid; | |
556 | ||
557 | nid = acpi_get_node(handle); | |
558 | if (nid == -1 || !node_online(nid)) | |
559 | return; | |
560 | #ifdef CONFIG_X86_64 | |
561 | apicid_to_node[physid] = nid; | |
562 | numa_set_node(cpu, nid); | |
563 | #else /* CONFIG_X86_32 */ | |
564 | apicid_2_node[physid] = nid; | |
565 | cpu_to_node_map[cpu] = nid; | |
566 | #endif | |
567 | ||
568 | #endif | |
569 | } | |
009cbadb SR |
570 | |
571 | static int __cpuinit _acpi_map_lsapic(acpi_handle handle, int *pcpu) | |
1da177e4 | 572 | { |
73fea175 AR |
573 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
574 | union acpi_object *obj; | |
5f3b1a8b | 575 | struct acpi_madt_local_apic *lapic; |
ee943a82 | 576 | cpumask_var_t tmp_map, new_map; |
73fea175 AR |
577 | u8 physid; |
578 | int cpu; | |
ee943a82 | 579 | int retval = -ENOMEM; |
73fea175 AR |
580 | |
581 | if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer))) | |
582 | return -EINVAL; | |
583 | ||
584 | if (!buffer.length || !buffer.pointer) | |
585 | return -EINVAL; | |
586 | ||
587 | obj = buffer.pointer; | |
588 | if (obj->type != ACPI_TYPE_BUFFER || | |
589 | obj->buffer.length < sizeof(*lapic)) { | |
590 | kfree(buffer.pointer); | |
591 | return -EINVAL; | |
592 | } | |
593 | ||
5f3b1a8b | 594 | lapic = (struct acpi_madt_local_apic *)obj->buffer.pointer; |
73fea175 | 595 | |
5f3b1a8b AS |
596 | if (lapic->header.type != ACPI_MADT_TYPE_LOCAL_APIC || |
597 | !(lapic->lapic_flags & ACPI_MADT_ENABLED)) { | |
73fea175 AR |
598 | kfree(buffer.pointer); |
599 | return -EINVAL; | |
600 | } | |
601 | ||
602 | physid = lapic->id; | |
603 | ||
604 | kfree(buffer.pointer); | |
605 | buffer.length = ACPI_ALLOCATE_BUFFER; | |
606 | buffer.pointer = NULL; | |
607 | ||
ee943a82 RR |
608 | if (!alloc_cpumask_var(&tmp_map, GFP_KERNEL)) |
609 | goto out; | |
610 | ||
611 | if (!alloc_cpumask_var(&new_map, GFP_KERNEL)) | |
612 | goto free_tmp_map; | |
613 | ||
614 | cpumask_copy(tmp_map, cpu_present_mask); | |
dfac2189 | 615 | acpi_register_lapic(physid, lapic->lapic_flags & ACPI_MADT_ENABLED); |
73fea175 AR |
616 | |
617 | /* | |
618 | * If mp_register_lapic successfully generates a new logical cpu | |
619 | * number, then the following will get us exactly what was mapped | |
620 | */ | |
ee943a82 RR |
621 | cpumask_andnot(new_map, cpu_present_mask, tmp_map); |
622 | if (cpumask_empty(new_map)) { | |
73fea175 | 623 | printk ("Unable to map lapic to logical cpu number\n"); |
ee943a82 RR |
624 | retval = -EINVAL; |
625 | goto free_new_map; | |
73fea175 AR |
626 | } |
627 | ||
d8191fa4 AC |
628 | acpi_processor_set_pdc(handle); |
629 | ||
ee943a82 | 630 | cpu = cpumask_first(new_map); |
0271f910 | 631 | acpi_map_cpu2node(handle, cpu, physid); |
73fea175 AR |
632 | |
633 | *pcpu = cpu; | |
ee943a82 RR |
634 | retval = 0; |
635 | ||
636 | free_new_map: | |
637 | free_cpumask_var(new_map); | |
638 | free_tmp_map: | |
639 | free_cpumask_var(tmp_map); | |
640 | out: | |
641 | return retval; | |
1da177e4 | 642 | } |
1da177e4 | 643 | |
009cbadb SR |
644 | /* wrapper to silence section mismatch warning */ |
645 | int __ref acpi_map_lsapic(acpi_handle handle, int *pcpu) | |
646 | { | |
647 | return _acpi_map_lsapic(handle, pcpu); | |
648 | } | |
4be44fcd | 649 | EXPORT_SYMBOL(acpi_map_lsapic); |
1da177e4 | 650 | |
4be44fcd | 651 | int acpi_unmap_lsapic(int cpu) |
1da177e4 | 652 | { |
71fff5e6 | 653 | per_cpu(x86_cpu_to_apicid, cpu) = -1; |
9628937d | 654 | set_cpu_present(cpu, false); |
73fea175 AR |
655 | num_processors--; |
656 | ||
657 | return (0); | |
1da177e4 | 658 | } |
4be44fcd | 659 | |
1da177e4 | 660 | EXPORT_SYMBOL(acpi_unmap_lsapic); |
4be44fcd | 661 | #endif /* CONFIG_ACPI_HOTPLUG_CPU */ |
1da177e4 | 662 | |
4be44fcd | 663 | int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base) |
b1bb248a KK |
664 | { |
665 | /* TBD */ | |
666 | return -EINVAL; | |
667 | } | |
4be44fcd | 668 | |
b1bb248a KK |
669 | EXPORT_SYMBOL(acpi_register_ioapic); |
670 | ||
4be44fcd | 671 | int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base) |
b1bb248a KK |
672 | { |
673 | /* TBD */ | |
674 | return -EINVAL; | |
675 | } | |
4be44fcd | 676 | |
b1bb248a KK |
677 | EXPORT_SYMBOL(acpi_unregister_ioapic); |
678 | ||
5f3b1a8b | 679 | static int __init acpi_parse_sbf(struct acpi_table_header *table) |
1da177e4 | 680 | { |
5f3b1a8b | 681 | struct acpi_table_boot *sb; |
1da177e4 | 682 | |
5f3b1a8b | 683 | sb = (struct acpi_table_boot *)table; |
1da177e4 LT |
684 | if (!sb) { |
685 | printk(KERN_WARNING PREFIX "Unable to map SBF\n"); | |
686 | return -ENODEV; | |
687 | } | |
688 | ||
5f3b1a8b | 689 | sbf_port = sb->cmos_index; /* Save CMOS port */ |
1da177e4 LT |
690 | |
691 | return 0; | |
692 | } | |
693 | ||
1da177e4 | 694 | #ifdef CONFIG_HPET_TIMER |
2d0c87c3 | 695 | #include <asm/hpet.h> |
1da177e4 | 696 | |
a1dfd851 AD |
697 | static struct __initdata resource *hpet_res; |
698 | ||
5f3b1a8b | 699 | static int __init acpi_parse_hpet(struct acpi_table_header *table) |
1da177e4 LT |
700 | { |
701 | struct acpi_table_hpet *hpet_tbl; | |
702 | ||
5f3b1a8b | 703 | hpet_tbl = (struct acpi_table_hpet *)table; |
1da177e4 LT |
704 | if (!hpet_tbl) { |
705 | printk(KERN_WARNING PREFIX "Unable to map HPET\n"); | |
706 | return -ENODEV; | |
707 | } | |
708 | ||
ad363f80 | 709 | if (hpet_tbl->address.space_id != ACPI_SPACE_MEM) { |
1da177e4 LT |
710 | printk(KERN_WARNING PREFIX "HPET timers must be located in " |
711 | "memory.\n"); | |
712 | return -1; | |
713 | } | |
f0f4c343 | 714 | |
2d0c87c3 | 715 | hpet_address = hpet_tbl->address.address; |
c8bc6f3c | 716 | hpet_blockid = hpet_tbl->sequence; |
f4df73c2 TG |
717 | |
718 | /* | |
719 | * Some broken BIOSes advertise HPET at 0x0. We really do not | |
720 | * want to allocate a resource there. | |
721 | */ | |
722 | if (!hpet_address) { | |
723 | printk(KERN_WARNING PREFIX | |
724 | "HPET id: %#x base: %#lx is invalid\n", | |
725 | hpet_tbl->id, hpet_address); | |
726 | return 0; | |
727 | } | |
728 | #ifdef CONFIG_X86_64 | |
729 | /* | |
730 | * Some even more broken BIOSes advertise HPET at | |
731 | * 0xfed0000000000000 instead of 0xfed00000. Fix it up and add | |
732 | * some noise: | |
733 | */ | |
734 | if (hpet_address == 0xfed0000000000000UL) { | |
735 | if (!hpet_force_user) { | |
736 | printk(KERN_WARNING PREFIX "HPET id: %#x " | |
737 | "base: 0xfed0000000000000 is bogus\n " | |
738 | "try hpet=force on the kernel command line to " | |
739 | "fix it up to 0xfed00000.\n", hpet_tbl->id); | |
740 | hpet_address = 0; | |
741 | return 0; | |
742 | } | |
743 | printk(KERN_WARNING PREFIX | |
744 | "HPET id: %#x base: 0xfed0000000000000 fixed up " | |
745 | "to 0xfed00000.\n", hpet_tbl->id); | |
746 | hpet_address >>= 32; | |
747 | } | |
748 | #endif | |
4be44fcd | 749 | printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n", |
2d0c87c3 | 750 | hpet_tbl->id, hpet_address); |
1da177e4 | 751 | |
a1dfd851 AD |
752 | /* |
753 | * Allocate and initialize the HPET firmware resource for adding into | |
754 | * the resource tree during the lateinit timeframe. | |
755 | */ | |
756 | #define HPET_RESOURCE_NAME_SIZE 9 | |
757 | hpet_res = alloc_bootmem(sizeof(*hpet_res) + HPET_RESOURCE_NAME_SIZE); | |
758 | ||
a1dfd851 AD |
759 | hpet_res->name = (void *)&hpet_res[1]; |
760 | hpet_res->flags = IORESOURCE_MEM; | |
761 | snprintf((char *)hpet_res->name, HPET_RESOURCE_NAME_SIZE, "HPET %u", | |
762 | hpet_tbl->sequence); | |
763 | ||
764 | hpet_res->start = hpet_address; | |
765 | hpet_res->end = hpet_address + (1 * 1024) - 1; | |
766 | ||
1da177e4 LT |
767 | return 0; |
768 | } | |
a1dfd851 AD |
769 | |
770 | /* | |
771 | * hpet_insert_resource inserts the HPET resources used into the resource | |
772 | * tree. | |
773 | */ | |
774 | static __init int hpet_insert_resource(void) | |
775 | { | |
776 | if (!hpet_res) | |
777 | return 1; | |
778 | ||
779 | return insert_resource(&iomem_resource, hpet_res); | |
780 | } | |
781 | ||
782 | late_initcall(hpet_insert_resource); | |
783 | ||
1da177e4 LT |
784 | #else |
785 | #define acpi_parse_hpet NULL | |
786 | #endif | |
787 | ||
5f3b1a8b | 788 | static int __init acpi_parse_fadt(struct acpi_table_header *table) |
1da177e4 | 789 | { |
90660ec3 | 790 | |
1da177e4 LT |
791 | #ifdef CONFIG_X86_PM_TIMER |
792 | /* detect the location of the ACPI PM Timer */ | |
5f3b1a8b | 793 | if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID) { |
1da177e4 | 794 | /* FADT rev. 2 */ |
5f3b1a8b | 795 | if (acpi_gbl_FADT.xpm_timer_block.space_id != |
4be44fcd | 796 | ACPI_ADR_SPACE_SYSTEM_IO) |
1da177e4 LT |
797 | return 0; |
798 | ||
5f3b1a8b | 799 | pmtmr_ioport = acpi_gbl_FADT.xpm_timer_block.address; |
e6e87b4b DSL |
800 | /* |
801 | * "X" fields are optional extensions to the original V1.0 | |
802 | * fields, so we must selectively expand V1.0 fields if the | |
803 | * corresponding X field is zero. | |
804 | */ | |
805 | if (!pmtmr_ioport) | |
5f3b1a8b | 806 | pmtmr_ioport = acpi_gbl_FADT.pm_timer_block; |
1da177e4 LT |
807 | } else { |
808 | /* FADT rev. 1 */ | |
5f3b1a8b | 809 | pmtmr_ioport = acpi_gbl_FADT.pm_timer_block; |
1da177e4 LT |
810 | } |
811 | if (pmtmr_ioport) | |
4be44fcd LB |
812 | printk(KERN_INFO PREFIX "PM-Timer IO Port: %#x\n", |
813 | pmtmr_ioport); | |
1da177e4 LT |
814 | #endif |
815 | return 0; | |
816 | } | |
817 | ||
1da177e4 LT |
818 | #ifdef CONFIG_X86_LOCAL_APIC |
819 | /* | |
820 | * Parse LAPIC entries in MADT | |
821 | * returns 0 on success, < 0 on error | |
822 | */ | |
31d2092e AS |
823 | |
824 | static void __init acpi_register_lapic_address(unsigned long address) | |
825 | { | |
826 | mp_lapic_addr = address; | |
827 | ||
828 | set_fixmap_nocache(FIX_APIC_BASE, address); | |
fb3bbd6a | 829 | if (boot_cpu_physical_apicid == -1U) { |
4c9961d5 | 830 | boot_cpu_physical_apicid = read_apic_id(); |
fb3bbd6a YL |
831 | apic_version[boot_cpu_physical_apicid] = |
832 | GET_APIC_VERSION(apic_read(APIC_LVR)); | |
fb3bbd6a | 833 | } |
31d2092e AS |
834 | } |
835 | ||
cbf9bd60 YL |
836 | static int __init early_acpi_parse_madt_lapic_addr_ovr(void) |
837 | { | |
838 | int count; | |
839 | ||
840 | if (!cpu_has_apic) | |
841 | return -ENODEV; | |
842 | ||
843 | /* | |
844 | * Note that the LAPIC address is obtained from the MADT (32-bit value) | |
845 | * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value). | |
846 | */ | |
847 | ||
848 | count = | |
849 | acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE, | |
850 | acpi_parse_lapic_addr_ovr, 0); | |
851 | if (count < 0) { | |
852 | printk(KERN_ERR PREFIX | |
853 | "Error parsing LAPIC address override entry\n"); | |
854 | return count; | |
855 | } | |
856 | ||
857 | acpi_register_lapic_address(acpi_lapic_addr); | |
858 | ||
859 | return count; | |
860 | } | |
861 | ||
4be44fcd | 862 | static int __init acpi_parse_madt_lapic_entries(void) |
1da177e4 LT |
863 | { |
864 | int count; | |
7237d3de | 865 | int x2count = 0; |
1da177e4 | 866 | |
0fcd2709 AK |
867 | if (!cpu_has_apic) |
868 | return -ENODEV; | |
869 | ||
5f3b1a8b | 870 | /* |
1da177e4 LT |
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 | ||
4be44fcd | 875 | count = |
5f3b1a8b | 876 | acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE, |
4be44fcd | 877 | acpi_parse_lapic_addr_ovr, 0); |
1da177e4 | 878 | if (count < 0) { |
4be44fcd LB |
879 | printk(KERN_ERR PREFIX |
880 | "Error parsing LAPIC address override entry\n"); | |
1da177e4 LT |
881 | return count; |
882 | } | |
883 | ||
31d2092e | 884 | acpi_register_lapic_address(acpi_lapic_addr); |
1da177e4 | 885 | |
ac049c1d JS |
886 | count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_SAPIC, |
887 | acpi_parse_sapic, MAX_APICS); | |
888 | ||
7237d3de SS |
889 | if (!count) { |
890 | x2count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC, | |
891 | acpi_parse_x2apic, MAX_APICS); | |
ac049c1d JS |
892 | count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC, |
893 | acpi_parse_lapic, MAX_APICS); | |
7237d3de SS |
894 | } |
895 | if (!count && !x2count) { | |
1da177e4 LT |
896 | printk(KERN_ERR PREFIX "No LAPIC entries present\n"); |
897 | /* TBD: Cleanup to allow fallback to MPS */ | |
898 | return -ENODEV; | |
7237d3de | 899 | } else if (count < 0 || x2count < 0) { |
1da177e4 LT |
900 | printk(KERN_ERR PREFIX "Error parsing LAPIC entry\n"); |
901 | /* TBD: Cleanup to allow fallback to MPS */ | |
902 | return count; | |
903 | } | |
904 | ||
7237d3de SS |
905 | x2count = |
906 | acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC_NMI, | |
907 | acpi_parse_x2apic_nmi, 0); | |
4be44fcd | 908 | count = |
5f3b1a8b | 909 | acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI, acpi_parse_lapic_nmi, 0); |
7237d3de | 910 | if (count < 0 || x2count < 0) { |
1da177e4 LT |
911 | printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n"); |
912 | /* TBD: Cleanup to allow fallback to MPS */ | |
913 | return count; | |
914 | } | |
915 | return 0; | |
916 | } | |
4be44fcd | 917 | #endif /* CONFIG_X86_LOCAL_APIC */ |
1da177e4 | 918 | |
8466361a | 919 | #ifdef CONFIG_X86_IO_APIC |
11113f84 AS |
920 | #define MP_ISA_BUS 0 |
921 | ||
d49c4288 | 922 | #ifdef CONFIG_X86_ES7000 |
11113f84 AS |
923 | extern int es7000_plat; |
924 | #endif | |
925 | ||
c2c21745 JSR |
926 | static void assign_to_mp_irq(struct mpc_intsrc *m, |
927 | struct mpc_intsrc *mp_irq) | |
fcfa146e | 928 | { |
c2c21745 | 929 | memcpy(mp_irq, m, sizeof(struct mpc_intsrc)); |
fcfa146e YL |
930 | } |
931 | ||
c2c21745 JSR |
932 | static int mp_irq_cmp(struct mpc_intsrc *mp_irq, |
933 | struct mpc_intsrc *m) | |
fcfa146e | 934 | { |
c2c21745 | 935 | return memcmp(mp_irq, m, sizeof(struct mpc_intsrc)); |
fcfa146e YL |
936 | } |
937 | ||
c2c21745 | 938 | static void save_mp_irq(struct mpc_intsrc *m) |
fcfa146e YL |
939 | { |
940 | int i; | |
941 | ||
942 | for (i = 0; i < mp_irq_entries; i++) { | |
943 | if (!mp_irq_cmp(&mp_irqs[i], m)) | |
944 | return; | |
945 | } | |
946 | ||
947 | assign_to_mp_irq(m, &mp_irqs[mp_irq_entries]); | |
948 | if (++mp_irq_entries == MAX_IRQ_SOURCES) | |
949 | panic("Max # of irq sources exceeded!!\n"); | |
950 | } | |
951 | ||
11113f84 AS |
952 | void __init mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger, u32 gsi) |
953 | { | |
6df8809b YL |
954 | int ioapic; |
955 | int pin; | |
c2c21745 | 956 | struct mpc_intsrc mp_irq; |
11113f84 AS |
957 | |
958 | /* | |
959 | * Convert 'gsi' to 'ioapic.pin'. | |
960 | */ | |
961 | ioapic = mp_find_ioapic(gsi); | |
962 | if (ioapic < 0) | |
963 | return; | |
c3e137d1 | 964 | pin = mp_find_ioapic_pin(ioapic, gsi); |
11113f84 AS |
965 | |
966 | /* | |
967 | * TBD: This check is for faulty timer entries, where the override | |
968 | * erroneously sets the trigger to level, resulting in a HUGE | |
969 | * increase of timer interrupts! | |
970 | */ | |
971 | if ((bus_irq == 0) && (trigger == 3)) | |
972 | trigger = 1; | |
973 | ||
c2c21745 JSR |
974 | mp_irq.type = MP_INTSRC; |
975 | mp_irq.irqtype = mp_INT; | |
976 | mp_irq.irqflag = (trigger << 2) | polarity; | |
977 | mp_irq.srcbus = MP_ISA_BUS; | |
978 | mp_irq.srcbusirq = bus_irq; /* IRQ */ | |
979 | mp_irq.dstapic = mp_ioapics[ioapic].apicid; /* APIC ID */ | |
980 | mp_irq.dstirq = pin; /* INTIN# */ | |
11113f84 | 981 | |
fcfa146e | 982 | save_mp_irq(&mp_irq); |
988856ee EB |
983 | |
984 | isa_irq_to_gsi[bus_irq] = gsi; | |
11113f84 AS |
985 | } |
986 | ||
987 | void __init mp_config_acpi_legacy_irqs(void) | |
988 | { | |
6df8809b | 989 | int i; |
c2c21745 | 990 | struct mpc_intsrc mp_irq; |
11113f84 AS |
991 | |
992 | #if defined (CONFIG_MCA) || defined (CONFIG_EISA) | |
993 | /* | |
994 | * Fabricate the legacy ISA bus (bus #31). | |
995 | */ | |
996 | mp_bus_id_to_type[MP_ISA_BUS] = MP_BUS_ISA; | |
997 | #endif | |
998 | set_bit(MP_ISA_BUS, mp_bus_not_pci); | |
cfc1b9a6 | 999 | pr_debug("Bus #%d is ISA\n", MP_ISA_BUS); |
11113f84 | 1000 | |
d49c4288 | 1001 | #ifdef CONFIG_X86_ES7000 |
11113f84 AS |
1002 | /* |
1003 | * Older generations of ES7000 have no legacy identity mappings | |
1004 | */ | |
1005 | if (es7000_plat == 1) | |
1006 | return; | |
1007 | #endif | |
1008 | ||
11113f84 AS |
1009 | /* |
1010 | * Use the default configuration for the IRQs 0-15. Unless | |
1011 | * overridden by (MADT) interrupt source override entries. | |
1012 | */ | |
1013 | for (i = 0; i < 16; i++) { | |
0fd52670 EB |
1014 | int ioapic, pin; |
1015 | unsigned int dstapic; | |
11113f84 | 1016 | int idx; |
0fd52670 EB |
1017 | u32 gsi; |
1018 | ||
1019 | /* Locate the gsi that irq i maps to. */ | |
1020 | if (acpi_isa_irq_to_gsi(i, &gsi)) | |
1021 | continue; | |
1022 | ||
1023 | /* | |
1024 | * Locate the IOAPIC that manages the ISA IRQ. | |
1025 | */ | |
1026 | ioapic = mp_find_ioapic(gsi); | |
1027 | if (ioapic < 0) | |
1028 | continue; | |
1029 | pin = mp_find_ioapic_pin(ioapic, gsi); | |
1030 | dstapic = mp_ioapics[ioapic].apicid; | |
11113f84 AS |
1031 | |
1032 | for (idx = 0; idx < mp_irq_entries; idx++) { | |
c2c21745 | 1033 | struct mpc_intsrc *irq = mp_irqs + idx; |
11113f84 AS |
1034 | |
1035 | /* Do we already have a mapping for this ISA IRQ? */ | |
c2c21745 | 1036 | if (irq->srcbus == MP_ISA_BUS && irq->srcbusirq == i) |
11113f84 AS |
1037 | break; |
1038 | ||
1039 | /* Do we already have a mapping for this IOAPIC pin */ | |
0fd52670 | 1040 | if (irq->dstapic == dstapic && irq->dstirq == pin) |
11113f84 AS |
1041 | break; |
1042 | } | |
1043 | ||
1044 | if (idx != mp_irq_entries) { | |
1045 | printk(KERN_DEBUG "ACPI: IRQ%d used by override.\n", i); | |
1046 | continue; /* IRQ already used */ | |
1047 | } | |
1048 | ||
c2c21745 JSR |
1049 | mp_irq.type = MP_INTSRC; |
1050 | mp_irq.irqflag = 0; /* Conforming */ | |
1051 | mp_irq.srcbus = MP_ISA_BUS; | |
1052 | mp_irq.dstapic = dstapic; | |
1053 | mp_irq.irqtype = mp_INT; | |
1054 | mp_irq.srcbusirq = i; /* Identity mapped */ | |
0fd52670 | 1055 | mp_irq.dstirq = pin; |
11113f84 | 1056 | |
fcfa146e | 1057 | save_mp_irq(&mp_irq); |
11113f84 AS |
1058 | } |
1059 | } | |
1060 | ||
e5198075 | 1061 | static int mp_config_acpi_gsi(struct device *dev, u32 gsi, int trigger, |
a31f8205 YL |
1062 | int polarity) |
1063 | { | |
1064 | #ifdef CONFIG_X86_MPPARSE | |
1065 | struct mpc_intsrc mp_irq; | |
1066 | struct pci_dev *pdev; | |
1067 | unsigned char number; | |
1068 | unsigned int devfn; | |
1069 | int ioapic; | |
1070 | u8 pin; | |
1071 | ||
1072 | if (!acpi_ioapic) | |
1073 | return 0; | |
1074 | if (!dev) | |
1075 | return 0; | |
1076 | if (dev->bus != &pci_bus_type) | |
1077 | return 0; | |
1078 | ||
1079 | pdev = to_pci_dev(dev); | |
1080 | number = pdev->bus->number; | |
1081 | devfn = pdev->devfn; | |
1082 | pin = pdev->pin; | |
1083 | /* print the entry should happen on mptable identically */ | |
1084 | mp_irq.type = MP_INTSRC; | |
1085 | mp_irq.irqtype = mp_INT; | |
e5198075 | 1086 | mp_irq.irqflag = (trigger == ACPI_EDGE_SENSITIVE ? 4 : 0x0c) | |
a31f8205 YL |
1087 | (polarity == ACPI_ACTIVE_HIGH ? 1 : 3); |
1088 | mp_irq.srcbus = number; | |
1089 | mp_irq.srcbusirq = (((devfn >> 3) & 0x1f) << 2) | ((pin - 1) & 3); | |
1090 | ioapic = mp_find_ioapic(gsi); | |
bdfe8ac1 | 1091 | mp_irq.dstapic = mp_ioapics[ioapic].apicid; |
a31f8205 YL |
1092 | mp_irq.dstirq = mp_find_ioapic_pin(ioapic, gsi); |
1093 | ||
1094 | save_mp_irq(&mp_irq); | |
1095 | #endif | |
1096 | return 0; | |
1097 | } | |
1098 | ||
e5198075 | 1099 | int mp_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity) |
11113f84 AS |
1100 | { |
1101 | int ioapic; | |
1102 | int ioapic_pin; | |
e5198075 | 1103 | struct io_apic_irq_attr irq_attr; |
11113f84 AS |
1104 | |
1105 | if (acpi_irq_model != ACPI_IRQ_MODEL_IOAPIC) | |
1106 | return gsi; | |
11113f84 AS |
1107 | |
1108 | /* Don't set up the ACPI SCI because it's already set up */ | |
1109 | if (acpi_gbl_FADT.sci_interrupt == gsi) | |
1110 | return gsi; | |
1111 | ||
1112 | ioapic = mp_find_ioapic(gsi); | |
1113 | if (ioapic < 0) { | |
1114 | printk(KERN_WARNING "No IOAPIC for GSI %u\n", gsi); | |
1115 | return gsi; | |
1116 | } | |
1117 | ||
c3e137d1 | 1118 | ioapic_pin = mp_find_ioapic_pin(ioapic, gsi); |
11113f84 | 1119 | |
11113f84 AS |
1120 | if (ioapic_pin > MP_MAX_IOAPIC_PIN) { |
1121 | printk(KERN_ERR "Invalid reference to IOAPIC pin " | |
bdfe8ac1 | 1122 | "%d-%d\n", mp_ioapics[ioapic].apicid, |
11113f84 AS |
1123 | ioapic_pin); |
1124 | return gsi; | |
1125 | } | |
f1bdb523 YL |
1126 | |
1127 | if (enable_update_mptable) | |
1128 | mp_config_acpi_gsi(dev, gsi, trigger, polarity); | |
b9e0353f | 1129 | |
e5198075 YL |
1130 | set_io_apic_irq_attr(&irq_attr, ioapic, ioapic_pin, |
1131 | trigger == ACPI_EDGE_SENSITIVE ? 0 : 1, | |
1132 | polarity == ACPI_ACTIVE_HIGH ? 0 : 1); | |
988856ee | 1133 | io_apic_set_pci_routing(dev, gsi_to_irq(gsi), &irq_attr); |
b9e0353f | 1134 | |
11113f84 AS |
1135 | return gsi; |
1136 | } | |
1137 | ||
1da177e4 LT |
1138 | /* |
1139 | * Parse IOAPIC related entries in MADT | |
1140 | * returns 0 on success, < 0 on error | |
1141 | */ | |
4be44fcd | 1142 | static int __init acpi_parse_madt_ioapic_entries(void) |
1da177e4 LT |
1143 | { |
1144 | int count; | |
1145 | ||
1146 | /* | |
1147 | * ACPI interpreter is required to complete interrupt setup, | |
1148 | * so if it is off, don't enumerate the io-apics with ACPI. | |
1149 | * If MPS is present, it will handle them, | |
1150 | * otherwise the system will stay in PIC mode | |
1151 | */ | |
6b2b171a | 1152 | if (acpi_disabled || acpi_noirq) |
1da177e4 | 1153 | return -ENODEV; |
1da177e4 | 1154 | |
5f3b1a8b | 1155 | if (!cpu_has_apic) |
d3b6a349 AK |
1156 | return -ENODEV; |
1157 | ||
1da177e4 | 1158 | /* |
4be44fcd | 1159 | * if "noapic" boot option, don't look for IO-APICs |
1da177e4 LT |
1160 | */ |
1161 | if (skip_ioapic_setup) { | |
1162 | printk(KERN_INFO PREFIX "Skipping IOAPIC probe " | |
4be44fcd | 1163 | "due to 'noapic' option.\n"); |
1da177e4 LT |
1164 | return -ENODEV; |
1165 | } | |
1166 | ||
4be44fcd | 1167 | count = |
5f3b1a8b | 1168 | acpi_table_parse_madt(ACPI_MADT_TYPE_IO_APIC, acpi_parse_ioapic, |
4be44fcd | 1169 | MAX_IO_APICS); |
1da177e4 LT |
1170 | if (!count) { |
1171 | printk(KERN_ERR PREFIX "No IOAPIC entries present\n"); | |
1172 | return -ENODEV; | |
4be44fcd | 1173 | } else if (count < 0) { |
1da177e4 LT |
1174 | printk(KERN_ERR PREFIX "Error parsing IOAPIC entry\n"); |
1175 | return count; | |
1176 | } | |
1177 | ||
4be44fcd | 1178 | count = |
5f3b1a8b | 1179 | acpi_table_parse_madt(ACPI_MADT_TYPE_INTERRUPT_OVERRIDE, acpi_parse_int_src_ovr, |
71f521bb | 1180 | nr_irqs); |
1da177e4 | 1181 | if (count < 0) { |
4be44fcd LB |
1182 | printk(KERN_ERR PREFIX |
1183 | "Error parsing interrupt source overrides entry\n"); | |
1da177e4 LT |
1184 | /* TBD: Cleanup to allow fallback to MPS */ |
1185 | return count; | |
1186 | } | |
1187 | ||
1188 | /* | |
1189 | * If BIOS did not supply an INT_SRC_OVR for the SCI | |
1190 | * pretend we got one so we can set the SCI flags. | |
1191 | */ | |
1192 | if (!acpi_sci_override_gsi) | |
9d2062b8 EB |
1193 | acpi_sci_ioapic_setup(acpi_gbl_FADT.sci_interrupt, 0, 0, |
1194 | acpi_gbl_FADT.sci_interrupt); | |
1da177e4 | 1195 | |
af901ca1 | 1196 | /* Fill in identity legacy mappings where no override */ |
1da177e4 LT |
1197 | mp_config_acpi_legacy_irqs(); |
1198 | ||
4be44fcd | 1199 | count = |
5f3b1a8b | 1200 | acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE, acpi_parse_nmi_src, |
71f521bb | 1201 | nr_irqs); |
1da177e4 LT |
1202 | if (count < 0) { |
1203 | printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n"); | |
1204 | /* TBD: Cleanup to allow fallback to MPS */ | |
1205 | return count; | |
1206 | } | |
1207 | ||
1208 | return 0; | |
1209 | } | |
1210 | #else | |
1211 | static inline int acpi_parse_madt_ioapic_entries(void) | |
1212 | { | |
1213 | return -1; | |
1214 | } | |
8466361a | 1215 | #endif /* !CONFIG_X86_IO_APIC */ |
1da177e4 | 1216 | |
cbf9bd60 YL |
1217 | static void __init early_acpi_process_madt(void) |
1218 | { | |
1219 | #ifdef CONFIG_X86_LOCAL_APIC | |
1220 | int error; | |
1221 | ||
1222 | if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) { | |
1223 | ||
1224 | /* | |
1225 | * Parse MADT LAPIC entries | |
1226 | */ | |
1227 | error = early_acpi_parse_madt_lapic_addr_ovr(); | |
1228 | if (!error) { | |
1229 | acpi_lapic = 1; | |
1230 | smp_found_config = 1; | |
1231 | } | |
1232 | if (error == -EINVAL) { | |
1233 | /* | |
1234 | * Dell Precision Workstation 410, 610 come here. | |
1235 | */ | |
1236 | printk(KERN_ERR PREFIX | |
1237 | "Invalid BIOS MADT, disabling ACPI\n"); | |
1238 | disable_acpi(); | |
1239 | } | |
1240 | } | |
1241 | #endif | |
1242 | } | |
1243 | ||
4be44fcd | 1244 | static void __init acpi_process_madt(void) |
1da177e4 LT |
1245 | { |
1246 | #ifdef CONFIG_X86_LOCAL_APIC | |
7f8f97c3 | 1247 | int error; |
1da177e4 | 1248 | |
7f8f97c3 | 1249 | if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) { |
1da177e4 LT |
1250 | |
1251 | /* | |
1252 | * Parse MADT LAPIC entries | |
1253 | */ | |
1254 | error = acpi_parse_madt_lapic_entries(); | |
1255 | if (!error) { | |
1256 | acpi_lapic = 1; | |
1257 | ||
1258 | /* | |
1259 | * Parse MADT IO-APIC entries | |
1260 | */ | |
1261 | error = acpi_parse_madt_ioapic_entries(); | |
1262 | if (!error) { | |
1263 | acpi_irq_model = ACPI_IRQ_MODEL_IOAPIC; | |
1da177e4 LT |
1264 | acpi_ioapic = 1; |
1265 | ||
1266 | smp_found_config = 1; | |
1da177e4 LT |
1267 | } |
1268 | } | |
1269 | if (error == -EINVAL) { | |
1270 | /* | |
1271 | * Dell Precision Workstation 410, 610 come here. | |
1272 | */ | |
4be44fcd LB |
1273 | printk(KERN_ERR PREFIX |
1274 | "Invalid BIOS MADT, disabling ACPI\n"); | |
1da177e4 LT |
1275 | disable_acpi(); |
1276 | } | |
7b37b5fd LB |
1277 | } else { |
1278 | /* | |
1279 | * ACPI found no MADT, and so ACPI wants UP PIC mode. | |
1280 | * In the event an MPS table was found, forget it. | |
1281 | * Boot with "acpi=off" to use MPS on such a system. | |
1282 | */ | |
1283 | if (smp_found_config) { | |
1284 | printk(KERN_WARNING PREFIX | |
1285 | "No APIC-table, disabling MPS\n"); | |
1286 | smp_found_config = 0; | |
1287 | } | |
1da177e4 | 1288 | } |
69b88afa YL |
1289 | |
1290 | /* | |
1291 | * ACPI supports both logical (e.g. Hyper-Threading) and physical | |
1292 | * processors, where MPS only supports physical. | |
1293 | */ | |
1294 | if (acpi_lapic && acpi_ioapic) | |
1295 | printk(KERN_INFO "Using ACPI (MADT) for SMP configuration " | |
1296 | "information\n"); | |
1297 | else if (acpi_lapic) | |
1298 | printk(KERN_INFO "Using ACPI for processor (LAPIC) " | |
1299 | "configuration information\n"); | |
1da177e4 LT |
1300 | #endif |
1301 | return; | |
1302 | } | |
1303 | ||
1855256c | 1304 | static int __init disable_acpi_irq(const struct dmi_system_id *d) |
aea00143 AP |
1305 | { |
1306 | if (!acpi_force) { | |
1307 | printk(KERN_NOTICE "%s detected: force use of acpi=noirq\n", | |
1308 | d->ident); | |
1309 | acpi_noirq_set(); | |
1310 | } | |
1311 | return 0; | |
1312 | } | |
1313 | ||
1855256c | 1314 | static int __init disable_acpi_pci(const struct dmi_system_id *d) |
aea00143 AP |
1315 | { |
1316 | if (!acpi_force) { | |
1317 | printk(KERN_NOTICE "%s detected: force use of pci=noacpi\n", | |
1318 | d->ident); | |
1319 | acpi_disable_pci(); | |
1320 | } | |
1321 | return 0; | |
1322 | } | |
aea00143 | 1323 | |
1855256c | 1324 | static int __init dmi_disable_acpi(const struct dmi_system_id *d) |
aea00143 AP |
1325 | { |
1326 | if (!acpi_force) { | |
4be44fcd | 1327 | printk(KERN_NOTICE "%s detected: acpi off\n", d->ident); |
aea00143 AP |
1328 | disable_acpi(); |
1329 | } else { | |
1330 | printk(KERN_NOTICE | |
1331 | "Warning: DMI blacklist says broken, but acpi forced\n"); | |
1332 | } | |
1333 | return 0; | |
1334 | } | |
1335 | ||
e2079c43 RW |
1336 | /* |
1337 | * Force ignoring BIOS IRQ0 pin2 override | |
1338 | */ | |
1339 | static int __init dmi_ignore_irq0_timer_override(const struct dmi_system_id *d) | |
1340 | { | |
8d89adf4 IM |
1341 | /* |
1342 | * The ati_ixp4x0_rev() early PCI quirk should have set | |
1343 | * the acpi_skip_timer_override flag already: | |
1344 | */ | |
1345 | if (!acpi_skip_timer_override) { | |
1346 | WARN(1, KERN_ERR "ati_ixp4x0 quirk not complete.\n"); | |
1347 | pr_notice("%s detected: Ignoring BIOS IRQ0 pin2 override\n", | |
1348 | d->ident); | |
1349 | acpi_skip_timer_override = 1; | |
1350 | } | |
e2079c43 RW |
1351 | return 0; |
1352 | } | |
1353 | ||
aea00143 AP |
1354 | /* |
1355 | * If your system is blacklisted here, but you find that acpi=force | |
5b4c0b6f | 1356 | * works for you, please contact linux-acpi@vger.kernel.org |
aea00143 AP |
1357 | */ |
1358 | static struct dmi_system_id __initdata acpi_dmi_table[] = { | |
1359 | /* | |
1360 | * Boxes that need ACPI disabled | |
1361 | */ | |
1362 | { | |
4be44fcd LB |
1363 | .callback = dmi_disable_acpi, |
1364 | .ident = "IBM Thinkpad", | |
1365 | .matches = { | |
1366 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), | |
1367 | DMI_MATCH(DMI_BOARD_NAME, "2629H1G"), | |
1368 | }, | |
1369 | }, | |
aea00143 | 1370 | |
aea00143 AP |
1371 | /* |
1372 | * Boxes that need ACPI PCI IRQ routing disabled | |
1373 | */ | |
1374 | { | |
4be44fcd LB |
1375 | .callback = disable_acpi_irq, |
1376 | .ident = "ASUS A7V", | |
1377 | .matches = { | |
1378 | DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC"), | |
1379 | DMI_MATCH(DMI_BOARD_NAME, "<A7V>"), | |
1380 | /* newer BIOS, Revision 1011, does work */ | |
1381 | DMI_MATCH(DMI_BIOS_VERSION, | |
1382 | "ASUS A7V ACPI BIOS Revision 1007"), | |
1383 | }, | |
1384 | }, | |
74586fca LB |
1385 | { |
1386 | /* | |
1387 | * Latest BIOS for IBM 600E (1.16) has bad pcinum | |
1388 | * for LPC bridge, which is needed for the PCI | |
1389 | * interrupt links to work. DSDT fix is in bug 5966. | |
1390 | * 2645, 2646 model numbers are shared with 600/600E/600X | |
1391 | */ | |
1392 | .callback = disable_acpi_irq, | |
1393 | .ident = "IBM Thinkpad 600 Series 2645", | |
1394 | .matches = { | |
1395 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), | |
1396 | DMI_MATCH(DMI_BOARD_NAME, "2645"), | |
1397 | }, | |
1398 | }, | |
1399 | { | |
1400 | .callback = disable_acpi_irq, | |
1401 | .ident = "IBM Thinkpad 600 Series 2646", | |
1402 | .matches = { | |
1403 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), | |
1404 | DMI_MATCH(DMI_BOARD_NAME, "2646"), | |
1405 | }, | |
1406 | }, | |
aea00143 AP |
1407 | /* |
1408 | * Boxes that need ACPI PCI IRQ routing and PCI scan disabled | |
1409 | */ | |
4be44fcd LB |
1410 | { /* _BBN 0 bug */ |
1411 | .callback = disable_acpi_pci, | |
1412 | .ident = "ASUS PR-DLS", | |
1413 | .matches = { | |
1414 | DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), | |
1415 | DMI_MATCH(DMI_BOARD_NAME, "PR-DLS"), | |
1416 | DMI_MATCH(DMI_BIOS_VERSION, | |
1417 | "ASUS PR-DLS ACPI BIOS Revision 1010"), | |
1418 | DMI_MATCH(DMI_BIOS_DATE, "03/21/2003") | |
1419 | }, | |
1420 | }, | |
aea00143 | 1421 | { |
4be44fcd LB |
1422 | .callback = disable_acpi_pci, |
1423 | .ident = "Acer TravelMate 36x Laptop", | |
1424 | .matches = { | |
1425 | DMI_MATCH(DMI_SYS_VENDOR, "Acer"), | |
1426 | DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 360"), | |
1427 | }, | |
1428 | }, | |
35af2821 AH |
1429 | {} |
1430 | }; | |
1431 | ||
1432 | /* second table for DMI checks that should run after early-quirks */ | |
1433 | static struct dmi_system_id __initdata acpi_dmi_table_late[] = { | |
e2079c43 RW |
1434 | /* |
1435 | * HP laptops which use a DSDT reporting as HP/SB400/10000, | |
1436 | * which includes some code which overrides all temperature | |
1437 | * trip points to 16C if the INTIN2 input of the I/O APIC | |
1438 | * is enabled. This input is incorrectly designated the | |
1439 | * ISA IRQ 0 via an interrupt source override even though | |
1440 | * it is wired to the output of the master 8259A and INTIN0 | |
1441 | * is not connected at all. Force ignoring BIOS IRQ0 pin2 | |
1442 | * override in that cases. | |
1443 | */ | |
e84956f9 RW |
1444 | { |
1445 | .callback = dmi_ignore_irq0_timer_override, | |
1446 | .ident = "HP nx6115 laptop", | |
1447 | .matches = { | |
1448 | DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), | |
1449 | DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6115"), | |
1450 | }, | |
1451 | }, | |
e2079c43 RW |
1452 | { |
1453 | .callback = dmi_ignore_irq0_timer_override, | |
1454 | .ident = "HP NX6125 laptop", | |
1455 | .matches = { | |
1456 | DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), | |
1457 | DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6125"), | |
1458 | }, | |
1459 | }, | |
1460 | { | |
1461 | .callback = dmi_ignore_irq0_timer_override, | |
1462 | .ident = "HP NX6325 laptop", | |
1463 | .matches = { | |
1464 | DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), | |
1465 | DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6325"), | |
1466 | }, | |
1467 | }, | |
e84956f9 RW |
1468 | { |
1469 | .callback = dmi_ignore_irq0_timer_override, | |
1470 | .ident = "HP 6715b laptop", | |
1471 | .matches = { | |
1472 | DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), | |
1473 | DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq 6715b"), | |
1474 | }, | |
1475 | }, | |
4be44fcd | 1476 | {} |
aea00143 AP |
1477 | }; |
1478 | ||
1da177e4 LT |
1479 | /* |
1480 | * acpi_boot_table_init() and acpi_boot_init() | |
1481 | * called from setup_arch(), always. | |
1482 | * 1. checksums all tables | |
1483 | * 2. enumerates lapics | |
1484 | * 3. enumerates io-apics | |
1485 | * | |
1486 | * acpi_table_init() is separate to allow reading SRAT without | |
1487 | * other side effects. | |
1488 | * | |
1489 | * side effects of acpi_boot_init: | |
1490 | * acpi_lapic = 1 if LAPIC found | |
1491 | * acpi_ioapic = 1 if IOAPIC found | |
1492 | * if (acpi_lapic && acpi_ioapic) smp_found_config = 1; | |
1493 | * if acpi_blacklisted() acpi_disabled = 1; | |
1494 | * acpi_irq_model=... | |
1495 | * ... | |
1da177e4 LT |
1496 | */ |
1497 | ||
8558e394 | 1498 | void __init acpi_boot_table_init(void) |
1da177e4 | 1499 | { |
aea00143 | 1500 | dmi_check_system(acpi_dmi_table); |
aea00143 | 1501 | |
1da177e4 LT |
1502 | /* |
1503 | * If acpi_disabled, bail out | |
1504 | * One exception: acpi=ht continues far enough to enumerate LAPICs | |
1505 | */ | |
1506 | if (acpi_disabled && !acpi_ht) | |
8558e394 | 1507 | return; |
1da177e4 | 1508 | |
5f3b1a8b | 1509 | /* |
1da177e4 LT |
1510 | * Initialize the ACPI boot-time table parser. |
1511 | */ | |
8558e394 | 1512 | if (acpi_table_init()) { |
1da177e4 | 1513 | disable_acpi(); |
8558e394 | 1514 | return; |
1da177e4 | 1515 | } |
1da177e4 | 1516 | |
5f3b1a8b | 1517 | acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf); |
1da177e4 LT |
1518 | |
1519 | /* | |
1520 | * blacklist may disable ACPI entirely | |
1521 | */ | |
8558e394 | 1522 | if (acpi_blacklisted()) { |
1da177e4 LT |
1523 | if (acpi_force) { |
1524 | printk(KERN_WARNING PREFIX "acpi=force override\n"); | |
1525 | } else { | |
1526 | printk(KERN_WARNING PREFIX "Disabling ACPI support\n"); | |
1527 | disable_acpi(); | |
8558e394 | 1528 | return; |
1da177e4 LT |
1529 | } |
1530 | } | |
cbf9bd60 YL |
1531 | } |
1532 | ||
1533 | int __init early_acpi_boot_init(void) | |
1534 | { | |
1535 | /* | |
1536 | * If acpi_disabled, bail out | |
1537 | * One exception: acpi=ht continues far enough to enumerate LAPICs | |
1538 | */ | |
1539 | if (acpi_disabled && !acpi_ht) | |
1540 | return 1; | |
1541 | ||
1542 | /* | |
1543 | * Process the Multiple APIC Description Table (MADT), if present | |
1544 | */ | |
1545 | early_acpi_process_madt(); | |
1da177e4 LT |
1546 | |
1547 | return 0; | |
1548 | } | |
1549 | ||
1da177e4 LT |
1550 | int __init acpi_boot_init(void) |
1551 | { | |
35af2821 AH |
1552 | /* those are executed after early-quirks are executed */ |
1553 | dmi_check_system(acpi_dmi_table_late); | |
1554 | ||
1da177e4 LT |
1555 | /* |
1556 | * If acpi_disabled, bail out | |
1557 | * One exception: acpi=ht continues far enough to enumerate LAPICs | |
1558 | */ | |
1559 | if (acpi_disabled && !acpi_ht) | |
4be44fcd | 1560 | return 1; |
1da177e4 | 1561 | |
5f3b1a8b | 1562 | acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf); |
1da177e4 LT |
1563 | |
1564 | /* | |
1565 | * set sci_int and PM timer address | |
1566 | */ | |
ceb6c468 | 1567 | acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt); |
1da177e4 LT |
1568 | |
1569 | /* | |
1570 | * Process the Multiple APIC Description Table (MADT), if present | |
1571 | */ | |
1572 | acpi_process_madt(); | |
1573 | ||
5f3b1a8b | 1574 | acpi_table_parse(ACPI_SIG_HPET, acpi_parse_hpet); |
1da177e4 | 1575 | |
b72d0db9 TG |
1576 | if (!acpi_noirq) |
1577 | x86_init.pci.init = pci_acpi_init; | |
1578 | ||
1da177e4 LT |
1579 | return 0; |
1580 | } | |
1a3f239d RR |
1581 | |
1582 | static int __init parse_acpi(char *arg) | |
1583 | { | |
1584 | if (!arg) | |
1585 | return -EINVAL; | |
1586 | ||
1587 | /* "acpi=off" disables both ACPI table parsing and interpreter */ | |
1588 | if (strcmp(arg, "off") == 0) { | |
1589 | disable_acpi(); | |
1590 | } | |
1591 | /* acpi=force to over-ride black-list */ | |
1592 | else if (strcmp(arg, "force") == 0) { | |
1593 | acpi_force = 1; | |
1594 | acpi_ht = 1; | |
1595 | acpi_disabled = 0; | |
1596 | } | |
1597 | /* acpi=strict disables out-of-spec workarounds */ | |
1598 | else if (strcmp(arg, "strict") == 0) { | |
1599 | acpi_strict = 1; | |
1600 | } | |
1601 | /* Limit ACPI just to boot-time to enable HT */ | |
1602 | else if (strcmp(arg, "ht") == 0) { | |
4c81ba49 LB |
1603 | if (!acpi_force) { |
1604 | printk(KERN_WARNING "acpi=ht will be removed in Linux-2.6.35\n"); | |
1a3f239d | 1605 | disable_acpi(); |
4c81ba49 | 1606 | } |
1a3f239d RR |
1607 | acpi_ht = 1; |
1608 | } | |
237889bf ZY |
1609 | /* acpi=rsdt use RSDT instead of XSDT */ |
1610 | else if (strcmp(arg, "rsdt") == 0) { | |
1611 | acpi_rsdt_forced = 1; | |
1612 | } | |
1a3f239d RR |
1613 | /* "acpi=noirq" disables ACPI interrupt routing */ |
1614 | else if (strcmp(arg, "noirq") == 0) { | |
1615 | acpi_noirq_set(); | |
1616 | } else { | |
1617 | /* Core will printk when we return error. */ | |
1618 | return -EINVAL; | |
1619 | } | |
1620 | return 0; | |
1621 | } | |
1622 | early_param("acpi", parse_acpi); | |
1623 | ||
1624 | /* FIXME: Using pci= for an ACPI parameter is a travesty. */ | |
1625 | static int __init parse_pci(char *arg) | |
1626 | { | |
1627 | if (arg && strcmp(arg, "noacpi") == 0) | |
1628 | acpi_disable_pci(); | |
1629 | return 0; | |
1630 | } | |
1631 | early_param("pci", parse_pci); | |
1632 | ||
3c999f14 YL |
1633 | int __init acpi_mps_check(void) |
1634 | { | |
1635 | #if defined(CONFIG_X86_LOCAL_APIC) && !defined(CONFIG_X86_MPPARSE) | |
1636 | /* mptable code is not built-in*/ | |
1637 | if (acpi_disabled || acpi_noirq) { | |
1638 | printk(KERN_WARNING "MPS support code is not built-in.\n" | |
1639 | "Using acpi=off or acpi=noirq or pci=noacpi " | |
1640 | "may have problem\n"); | |
1641 | return 1; | |
1642 | } | |
1643 | #endif | |
1644 | return 0; | |
1645 | } | |
1646 | ||
1a3f239d RR |
1647 | #ifdef CONFIG_X86_IO_APIC |
1648 | static int __init parse_acpi_skip_timer_override(char *arg) | |
1649 | { | |
1650 | acpi_skip_timer_override = 1; | |
1651 | return 0; | |
1652 | } | |
1653 | early_param("acpi_skip_timer_override", parse_acpi_skip_timer_override); | |
fa18f477 AK |
1654 | |
1655 | static int __init parse_acpi_use_timer_override(char *arg) | |
1656 | { | |
1657 | acpi_use_timer_override = 1; | |
1658 | return 0; | |
1659 | } | |
1660 | early_param("acpi_use_timer_override", parse_acpi_use_timer_override); | |
1a3f239d RR |
1661 | #endif /* CONFIG_X86_IO_APIC */ |
1662 | ||
1663 | static int __init setup_acpi_sci(char *s) | |
1664 | { | |
1665 | if (!s) | |
1666 | return -EINVAL; | |
1667 | if (!strcmp(s, "edge")) | |
5f3b1a8b AS |
1668 | acpi_sci_flags = ACPI_MADT_TRIGGER_EDGE | |
1669 | (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK); | |
1a3f239d | 1670 | else if (!strcmp(s, "level")) |
5f3b1a8b AS |
1671 | acpi_sci_flags = ACPI_MADT_TRIGGER_LEVEL | |
1672 | (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK); | |
1a3f239d | 1673 | else if (!strcmp(s, "high")) |
5f3b1a8b AS |
1674 | acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_HIGH | |
1675 | (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK); | |
1a3f239d | 1676 | else if (!strcmp(s, "low")) |
5f3b1a8b AS |
1677 | acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_LOW | |
1678 | (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK); | |
1a3f239d RR |
1679 | else |
1680 | return -EINVAL; | |
1681 | return 0; | |
1682 | } | |
1683 | early_param("acpi_sci", setup_acpi_sci); | |
d0a9081b AM |
1684 | |
1685 | int __acpi_acquire_global_lock(unsigned int *lock) | |
1686 | { | |
1687 | unsigned int old, new, val; | |
1688 | do { | |
1689 | old = *lock; | |
1690 | new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1)); | |
1691 | val = cmpxchg(lock, old, new); | |
1692 | } while (unlikely (val != old)); | |
1693 | return (new < 3) ? -1 : 0; | |
1694 | } | |
1695 | ||
1696 | int __acpi_release_global_lock(unsigned int *lock) | |
1697 | { | |
1698 | unsigned int old, new, val; | |
1699 | do { | |
1700 | old = *lock; | |
1701 | new = old & ~0x3; | |
1702 | val = cmpxchg(lock, old, new); | |
1703 | } while (unlikely (val != old)); | |
1704 | return old & 0x1; | |
1705 | } |