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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 LT |
27 | #include <linux/acpi.h> |
28 | #include <linux/efi.h> | |
73fea175 | 29 | #include <linux/cpumask.h> |
1da177e4 | 30 | #include <linux/module.h> |
aea00143 | 31 | #include <linux/dmi.h> |
b33fa1f3 | 32 | #include <linux/irq.h> |
f0f4c343 AD |
33 | #include <linux/bootmem.h> |
34 | #include <linux/ioport.h> | |
1da177e4 LT |
35 | |
36 | #include <asm/pgtable.h> | |
37 | #include <asm/io_apic.h> | |
38 | #include <asm/apic.h> | |
39 | #include <asm/io.h> | |
1da177e4 LT |
40 | #include <asm/mpspec.h> |
41 | ||
e8924acb | 42 | static int __initdata acpi_force = 0; |
1a3f239d | 43 | |
df3bb57d AK |
44 | #ifdef CONFIG_ACPI |
45 | int acpi_disabled = 0; | |
46 | #else | |
47 | int acpi_disabled = 1; | |
48 | #endif | |
49 | EXPORT_SYMBOL(acpi_disabled); | |
50 | ||
1da177e4 LT |
51 | #ifdef CONFIG_X86_64 |
52 | ||
1da177e4 LT |
53 | #include <asm/proto.h> |
54 | ||
637029c6 LT |
55 | static inline int acpi_madt_oem_check(char *oem_id, char *oem_table_id) { return 0; } |
56 | ||
57 | ||
4be44fcd | 58 | #else /* X86 */ |
1da177e4 LT |
59 | |
60 | #ifdef CONFIG_X86_LOCAL_APIC | |
61 | #include <mach_apic.h> | |
62 | #include <mach_mpparse.h> | |
4be44fcd | 63 | #endif /* CONFIG_X86_LOCAL_APIC */ |
1da177e4 | 64 | |
4be44fcd | 65 | #endif /* X86 */ |
1da177e4 LT |
66 | |
67 | #define BAD_MADT_ENTRY(entry, end) ( \ | |
68 | (!entry) || (unsigned long)entry + sizeof(*entry) > end || \ | |
5f3b1a8b | 69 | ((struct acpi_subtable_header *)entry)->length < sizeof(*entry)) |
1da177e4 LT |
70 | |
71 | #define PREFIX "ACPI: " | |
72 | ||
90d53909 | 73 | int acpi_noirq; /* skip ACPI IRQ initialization */ |
4be44fcd | 74 | int acpi_pci_disabled __initdata; /* skip ACPI PCI scan and IRQ initialization */ |
1da177e4 LT |
75 | int acpi_ht __initdata = 1; /* enable HT */ |
76 | ||
77 | int acpi_lapic; | |
78 | int acpi_ioapic; | |
79 | int acpi_strict; | |
80 | EXPORT_SYMBOL(acpi_strict); | |
81 | ||
5f3b1a8b | 82 | u8 acpi_sci_flags __initdata; |
1da177e4 LT |
83 | int acpi_sci_override_gsi __initdata; |
84 | int acpi_skip_timer_override __initdata; | |
fa18f477 | 85 | int acpi_use_timer_override __initdata; |
1da177e4 LT |
86 | |
87 | #ifdef CONFIG_X86_LOCAL_APIC | |
88 | static u64 acpi_lapic_addr __initdata = APIC_DEFAULT_PHYS_BASE; | |
89 | #endif | |
90 | ||
91 | #ifndef __HAVE_ARCH_CMPXCHG | |
92 | #warning ACPI uses CMPXCHG, i486 and later hardware | |
93 | #endif | |
94 | ||
1da177e4 LT |
95 | /* -------------------------------------------------------------------------- |
96 | Boot-time Configuration | |
97 | -------------------------------------------------------------------------- */ | |
98 | ||
99 | /* | |
100 | * The default interrupt routing model is PIC (8259). This gets | |
101 | * overriden if IOAPICs are enumerated (below). | |
102 | */ | |
4be44fcd | 103 | enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_PIC; |
1da177e4 LT |
104 | |
105 | #ifdef CONFIG_X86_64 | |
106 | ||
107 | /* rely on all ACPI tables being in the direct mapping */ | |
108 | char *__acpi_map_table(unsigned long phys_addr, unsigned long size) | |
109 | { | |
110 | if (!phys_addr || !size) | |
4be44fcd | 111 | return NULL; |
1da177e4 | 112 | |
7a4a76cc | 113 | if (phys_addr+size <= (end_pfn_map << PAGE_SHIFT) + PAGE_SIZE) |
1da177e4 LT |
114 | return __va(phys_addr); |
115 | ||
116 | return NULL; | |
117 | } | |
118 | ||
119 | #else | |
120 | ||
121 | /* | |
122 | * Temporarily use the virtual area starting from FIX_IO_APIC_BASE_END, | |
123 | * to map the target physical address. The problem is that set_fixmap() | |
124 | * provides a single page, and it is possible that the page is not | |
125 | * sufficient. | |
126 | * By using this area, we can map up to MAX_IO_APICS pages temporarily, | |
127 | * i.e. until the next __va_range() call. | |
128 | * | |
129 | * Important Safety Note: The fixed I/O APIC page numbers are *subtracted* | |
130 | * from the fixed base. That's why we start at FIX_IO_APIC_BASE_END and | |
131 | * count idx down while incrementing the phys address. | |
132 | */ | |
133 | char *__acpi_map_table(unsigned long phys, unsigned long size) | |
134 | { | |
135 | unsigned long base, offset, mapped_size; | |
136 | int idx; | |
137 | ||
4be44fcd LB |
138 | if (phys + size < 8 * 1024 * 1024) |
139 | return __va(phys); | |
1da177e4 LT |
140 | |
141 | offset = phys & (PAGE_SIZE - 1); | |
142 | mapped_size = PAGE_SIZE - offset; | |
143 | set_fixmap(FIX_ACPI_END, phys); | |
144 | base = fix_to_virt(FIX_ACPI_END); | |
145 | ||
146 | /* | |
147 | * Most cases can be covered by the below. | |
148 | */ | |
149 | idx = FIX_ACPI_END; | |
150 | while (mapped_size < size) { | |
151 | if (--idx < FIX_ACPI_BEGIN) | |
152 | return NULL; /* cannot handle this */ | |
153 | phys += PAGE_SIZE; | |
154 | set_fixmap(idx, phys); | |
155 | mapped_size += PAGE_SIZE; | |
156 | } | |
157 | ||
4be44fcd | 158 | return ((unsigned char *)base + offset); |
1da177e4 LT |
159 | } |
160 | #endif | |
161 | ||
162 | #ifdef CONFIG_PCI_MMCONFIG | |
54549391 | 163 | /* The physical address of the MMCONFIG aperture. Set from ACPI tables. */ |
15a58ed1 | 164 | struct acpi_mcfg_allocation *pci_mmcfg_config; |
54549391 GKH |
165 | int pci_mmcfg_config_num; |
166 | ||
ceb6c468 | 167 | int __init acpi_parse_mcfg(struct acpi_table_header *header) |
1da177e4 LT |
168 | { |
169 | struct acpi_table_mcfg *mcfg; | |
54549391 GKH |
170 | unsigned long i; |
171 | int config_size; | |
1da177e4 | 172 | |
ceb6c468 | 173 | if (!header) |
1da177e4 LT |
174 | return -EINVAL; |
175 | ||
ceb6c468 | 176 | mcfg = (struct acpi_table_mcfg *)header; |
1da177e4 | 177 | |
54549391 GKH |
178 | /* how many config structures do we have */ |
179 | pci_mmcfg_config_num = 0; | |
ceb6c468 | 180 | i = header->length - sizeof(struct acpi_table_mcfg); |
15a58ed1 | 181 | while (i >= sizeof(struct acpi_mcfg_allocation)) { |
54549391 | 182 | ++pci_mmcfg_config_num; |
15a58ed1 | 183 | i -= sizeof(struct acpi_mcfg_allocation); |
54549391 GKH |
184 | }; |
185 | if (pci_mmcfg_config_num == 0) { | |
186 | printk(KERN_ERR PREFIX "MMCONFIG has no entries\n"); | |
1da177e4 LT |
187 | return -ENODEV; |
188 | } | |
189 | ||
54549391 GKH |
190 | config_size = pci_mmcfg_config_num * sizeof(*pci_mmcfg_config); |
191 | pci_mmcfg_config = kmalloc(config_size, GFP_KERNEL); | |
192 | if (!pci_mmcfg_config) { | |
193 | printk(KERN_WARNING PREFIX | |
194 | "No memory for MCFG config tables\n"); | |
195 | return -ENOMEM; | |
196 | } | |
197 | ||
ad363f80 | 198 | memcpy(pci_mmcfg_config, &mcfg[1], config_size); |
54549391 | 199 | for (i = 0; i < pci_mmcfg_config_num; ++i) { |
15a58ed1 | 200 | if (pci_mmcfg_config[i].address > 0xFFFFFFFF) { |
54549391 GKH |
201 | printk(KERN_ERR PREFIX |
202 | "MMCONFIG not in low 4GB of memory\n"); | |
acc7c2e0 KR |
203 | kfree(pci_mmcfg_config); |
204 | pci_mmcfg_config_num = 0; | |
54549391 GKH |
205 | return -ENODEV; |
206 | } | |
207 | } | |
1da177e4 LT |
208 | |
209 | return 0; | |
210 | } | |
4be44fcd | 211 | #endif /* CONFIG_PCI_MMCONFIG */ |
1da177e4 LT |
212 | |
213 | #ifdef CONFIG_X86_LOCAL_APIC | |
15a58ed1 | 214 | static int __init acpi_parse_madt(struct acpi_table_header *table) |
1da177e4 | 215 | { |
4be44fcd | 216 | struct acpi_table_madt *madt = NULL; |
1da177e4 | 217 | |
15a58ed1 | 218 | if (!cpu_has_apic) |
1da177e4 LT |
219 | return -EINVAL; |
220 | ||
15a58ed1 | 221 | madt = (struct acpi_table_madt *)table; |
1da177e4 LT |
222 | if (!madt) { |
223 | printk(KERN_WARNING PREFIX "Unable to map MADT\n"); | |
224 | return -ENODEV; | |
225 | } | |
226 | ||
ad363f80 AS |
227 | if (madt->address) { |
228 | acpi_lapic_addr = (u64) madt->address; | |
1da177e4 LT |
229 | |
230 | printk(KERN_DEBUG PREFIX "Local APIC address 0x%08x\n", | |
ad363f80 | 231 | madt->address); |
1da177e4 LT |
232 | } |
233 | ||
234 | acpi_madt_oem_check(madt->header.oem_id, madt->header.oem_table_id); | |
4be44fcd | 235 | |
1da177e4 LT |
236 | return 0; |
237 | } | |
238 | ||
1da177e4 | 239 | static int __init |
5f3b1a8b | 240 | acpi_parse_lapic(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 241 | { |
5f3b1a8b | 242 | struct acpi_madt_local_apic *processor = NULL; |
1da177e4 | 243 | |
5f3b1a8b | 244 | processor = (struct acpi_madt_local_apic *)header; |
1da177e4 LT |
245 | |
246 | if (BAD_MADT_ENTRY(processor, end)) | |
247 | return -EINVAL; | |
248 | ||
249 | acpi_table_print_madt_entry(header); | |
250 | ||
7f66ae48 AR |
251 | /* |
252 | * We need to register disabled CPU as well to permit | |
253 | * counting disabled CPUs. This allows us to size | |
254 | * cpus_possible_map more accurately, to permit | |
255 | * to not preallocating memory for all NR_CPUS | |
256 | * when we use CPU hotplug. | |
257 | */ | |
4be44fcd | 258 | mp_register_lapic(processor->id, /* APIC ID */ |
5f3b1a8b | 259 | processor->lapic_flags & ACPI_MADT_ENABLED); /* Enabled? */ |
1da177e4 LT |
260 | |
261 | return 0; | |
262 | } | |
263 | ||
264 | static int __init | |
5f3b1a8b | 265 | acpi_parse_lapic_addr_ovr(struct acpi_subtable_header * header, |
4be44fcd | 266 | const unsigned long end) |
1da177e4 | 267 | { |
5f3b1a8b | 268 | struct acpi_madt_local_apic_override *lapic_addr_ovr = NULL; |
1da177e4 | 269 | |
5f3b1a8b | 270 | lapic_addr_ovr = (struct acpi_madt_local_apic_override *)header; |
1da177e4 LT |
271 | |
272 | if (BAD_MADT_ENTRY(lapic_addr_ovr, end)) | |
273 | return -EINVAL; | |
274 | ||
275 | acpi_lapic_addr = lapic_addr_ovr->address; | |
276 | ||
277 | return 0; | |
278 | } | |
279 | ||
280 | static int __init | |
5f3b1a8b | 281 | acpi_parse_lapic_nmi(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 282 | { |
5f3b1a8b | 283 | struct acpi_madt_local_apic_nmi *lapic_nmi = NULL; |
1da177e4 | 284 | |
5f3b1a8b | 285 | lapic_nmi = (struct acpi_madt_local_apic_nmi *)header; |
1da177e4 LT |
286 | |
287 | if (BAD_MADT_ENTRY(lapic_nmi, end)) | |
288 | return -EINVAL; | |
289 | ||
290 | acpi_table_print_madt_entry(header); | |
291 | ||
292 | if (lapic_nmi->lint != 1) | |
293 | printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n"); | |
294 | ||
295 | return 0; | |
296 | } | |
297 | ||
4be44fcd | 298 | #endif /*CONFIG_X86_LOCAL_APIC */ |
1da177e4 | 299 | |
8466361a | 300 | #ifdef CONFIG_X86_IO_APIC |
1da177e4 LT |
301 | |
302 | static int __init | |
5f3b1a8b | 303 | acpi_parse_ioapic(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 304 | { |
5f3b1a8b | 305 | struct acpi_madt_io_apic *ioapic = NULL; |
1da177e4 | 306 | |
5f3b1a8b | 307 | ioapic = (struct acpi_madt_io_apic *)header; |
1da177e4 LT |
308 | |
309 | if (BAD_MADT_ENTRY(ioapic, end)) | |
310 | return -EINVAL; | |
4be44fcd | 311 | |
1da177e4 LT |
312 | acpi_table_print_madt_entry(header); |
313 | ||
4be44fcd LB |
314 | mp_register_ioapic(ioapic->id, |
315 | ioapic->address, ioapic->global_irq_base); | |
316 | ||
1da177e4 LT |
317 | return 0; |
318 | } | |
319 | ||
320 | /* | |
321 | * Parse Interrupt Source Override for the ACPI SCI | |
322 | */ | |
e82c354b | 323 | static void __init acpi_sci_ioapic_setup(u32 gsi, u16 polarity, u16 trigger) |
1da177e4 LT |
324 | { |
325 | if (trigger == 0) /* compatible SCI trigger is level */ | |
326 | trigger = 3; | |
327 | ||
328 | if (polarity == 0) /* compatible SCI polarity is low */ | |
329 | polarity = 3; | |
330 | ||
331 | /* Command-line over-ride via acpi_sci= */ | |
5f3b1a8b AS |
332 | if (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) |
333 | trigger = (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) >> 2; | |
1da177e4 | 334 | |
5f3b1a8b AS |
335 | if (acpi_sci_flags & ACPI_MADT_POLARITY_MASK) |
336 | polarity = acpi_sci_flags & ACPI_MADT_POLARITY_MASK; | |
1da177e4 LT |
337 | |
338 | /* | |
4be44fcd | 339 | * mp_config_acpi_legacy_irqs() already setup IRQs < 16 |
1da177e4 LT |
340 | * If GSI is < 16, this will update its flags, |
341 | * else it will create a new mp_irqs[] entry. | |
342 | */ | |
7bdd21ce | 343 | mp_override_legacy_irq(gsi, polarity, trigger, gsi); |
1da177e4 LT |
344 | |
345 | /* | |
346 | * stash over-ride to indicate we've been here | |
cee324b1 | 347 | * and for later update of acpi_gbl_FADT |
1da177e4 | 348 | */ |
7bdd21ce | 349 | acpi_sci_override_gsi = gsi; |
1da177e4 LT |
350 | return; |
351 | } | |
352 | ||
353 | static int __init | |
5f3b1a8b | 354 | acpi_parse_int_src_ovr(struct acpi_subtable_header * header, |
4be44fcd | 355 | const unsigned long end) |
1da177e4 | 356 | { |
5f3b1a8b | 357 | struct acpi_madt_interrupt_override *intsrc = NULL; |
1da177e4 | 358 | |
5f3b1a8b | 359 | intsrc = (struct acpi_madt_interrupt_override *)header; |
1da177e4 LT |
360 | |
361 | if (BAD_MADT_ENTRY(intsrc, end)) | |
362 | return -EINVAL; | |
363 | ||
364 | acpi_table_print_madt_entry(header); | |
365 | ||
5f3b1a8b | 366 | if (intsrc->source_irq == acpi_gbl_FADT.sci_interrupt) { |
7bdd21ce | 367 | acpi_sci_ioapic_setup(intsrc->global_irq, |
5f3b1a8b AS |
368 | intsrc->inti_flags & ACPI_MADT_POLARITY_MASK, |
369 | (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2); | |
1da177e4 LT |
370 | return 0; |
371 | } | |
372 | ||
373 | if (acpi_skip_timer_override && | |
5f3b1a8b | 374 | intsrc->source_irq == 0 && intsrc->global_irq == 2) { |
4be44fcd LB |
375 | printk(PREFIX "BIOS IRQ0 pin2 override ignored.\n"); |
376 | return 0; | |
1da177e4 LT |
377 | } |
378 | ||
5f3b1a8b AS |
379 | mp_override_legacy_irq(intsrc->source_irq, |
380 | intsrc->inti_flags & ACPI_MADT_POLARITY_MASK, | |
381 | (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2, | |
382 | intsrc->global_irq); | |
1da177e4 LT |
383 | |
384 | return 0; | |
385 | } | |
386 | ||
1da177e4 | 387 | static int __init |
5f3b1a8b | 388 | acpi_parse_nmi_src(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 389 | { |
5f3b1a8b | 390 | struct acpi_madt_nmi_source *nmi_src = NULL; |
1da177e4 | 391 | |
5f3b1a8b | 392 | nmi_src = (struct acpi_madt_nmi_source *)header; |
1da177e4 LT |
393 | |
394 | if (BAD_MADT_ENTRY(nmi_src, end)) | |
395 | return -EINVAL; | |
396 | ||
397 | acpi_table_print_madt_entry(header); | |
398 | ||
399 | /* TBD: Support nimsrc entries? */ | |
400 | ||
401 | return 0; | |
402 | } | |
403 | ||
4be44fcd | 404 | #endif /* CONFIG_X86_IO_APIC */ |
1da177e4 | 405 | |
1da177e4 LT |
406 | /* |
407 | * acpi_pic_sci_set_trigger() | |
5f3b1a8b | 408 | * |
1da177e4 LT |
409 | * use ELCR to set PIC-mode trigger type for SCI |
410 | * | |
411 | * If a PIC-mode SCI is not recognized or gives spurious IRQ7's | |
412 | * it may require Edge Trigger -- use "acpi_sci=edge" | |
413 | * | |
414 | * Port 0x4d0-4d1 are ECLR1 and ECLR2, the Edge/Level Control Registers | |
415 | * for the 8259 PIC. bit[n] = 1 means irq[n] is Level, otherwise Edge. | |
416 | * ECLR1 is IRQ's 0-7 (IRQ 0, 1, 2 must be 0) | |
417 | * ECLR2 is IRQ's 8-15 (IRQ 8, 13 must be 0) | |
418 | */ | |
419 | ||
4be44fcd | 420 | void __init acpi_pic_sci_set_trigger(unsigned int irq, u16 trigger) |
1da177e4 LT |
421 | { |
422 | unsigned int mask = 1 << irq; | |
423 | unsigned int old, new; | |
424 | ||
425 | /* Real old ELCR mask */ | |
426 | old = inb(0x4d0) | (inb(0x4d1) << 8); | |
427 | ||
428 | /* | |
429 | * If we use ACPI to set PCI irq's, then we should clear ELCR | |
430 | * since we will set it correctly as we enable the PCI irq | |
431 | * routing. | |
432 | */ | |
433 | new = acpi_noirq ? old : 0; | |
434 | ||
435 | /* | |
436 | * Update SCI information in the ELCR, it isn't in the PCI | |
437 | * routing tables.. | |
438 | */ | |
439 | switch (trigger) { | |
4be44fcd | 440 | case 1: /* Edge - clear */ |
1da177e4 LT |
441 | new &= ~mask; |
442 | break; | |
4be44fcd | 443 | case 3: /* Level - set */ |
1da177e4 LT |
444 | new |= mask; |
445 | break; | |
446 | } | |
447 | ||
448 | if (old == new) | |
449 | return; | |
450 | ||
451 | printk(PREFIX "setting ELCR to %04x (from %04x)\n", new, old); | |
452 | outb(new, 0x4d0); | |
453 | outb(new >> 8, 0x4d1); | |
454 | } | |
455 | ||
1da177e4 LT |
456 | int acpi_gsi_to_irq(u32 gsi, unsigned int *irq) |
457 | { | |
f023d764 | 458 | *irq = gsi; |
1da177e4 LT |
459 | return 0; |
460 | } | |
461 | ||
1f3a6a15 KK |
462 | /* |
463 | * success: return IRQ number (>=0) | |
464 | * failure: return < 0 | |
465 | */ | |
cb654695 | 466 | int acpi_register_gsi(u32 gsi, int triggering, int polarity) |
1da177e4 LT |
467 | { |
468 | unsigned int irq; | |
469 | unsigned int plat_gsi = gsi; | |
470 | ||
471 | #ifdef CONFIG_PCI | |
472 | /* | |
473 | * Make sure all (legacy) PCI IRQs are set as level-triggered. | |
474 | */ | |
475 | if (acpi_irq_model == ACPI_IRQ_MODEL_PIC) { | |
476 | extern void eisa_set_level_irq(unsigned int irq); | |
477 | ||
cb654695 | 478 | if (triggering == ACPI_LEVEL_SENSITIVE) |
4be44fcd | 479 | eisa_set_level_irq(gsi); |
1da177e4 LT |
480 | } |
481 | #endif | |
482 | ||
483 | #ifdef CONFIG_X86_IO_APIC | |
484 | if (acpi_irq_model == ACPI_IRQ_MODEL_IOAPIC) { | |
cb654695 | 485 | plat_gsi = mp_register_gsi(gsi, triggering, polarity); |
1da177e4 LT |
486 | } |
487 | #endif | |
488 | acpi_gsi_to_irq(plat_gsi, &irq); | |
489 | return irq; | |
490 | } | |
4be44fcd | 491 | |
1da177e4 LT |
492 | EXPORT_SYMBOL(acpi_register_gsi); |
493 | ||
494 | /* | |
495 | * ACPI based hotplug support for CPU | |
496 | */ | |
497 | #ifdef CONFIG_ACPI_HOTPLUG_CPU | |
4be44fcd | 498 | int acpi_map_lsapic(acpi_handle handle, int *pcpu) |
1da177e4 | 499 | { |
73fea175 AR |
500 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
501 | union acpi_object *obj; | |
5f3b1a8b | 502 | struct acpi_madt_local_apic *lapic; |
73fea175 AR |
503 | cpumask_t tmp_map, new_map; |
504 | u8 physid; | |
505 | int cpu; | |
506 | ||
507 | if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer))) | |
508 | return -EINVAL; | |
509 | ||
510 | if (!buffer.length || !buffer.pointer) | |
511 | return -EINVAL; | |
512 | ||
513 | obj = buffer.pointer; | |
514 | if (obj->type != ACPI_TYPE_BUFFER || | |
515 | obj->buffer.length < sizeof(*lapic)) { | |
516 | kfree(buffer.pointer); | |
517 | return -EINVAL; | |
518 | } | |
519 | ||
5f3b1a8b | 520 | lapic = (struct acpi_madt_local_apic *)obj->buffer.pointer; |
73fea175 | 521 | |
5f3b1a8b AS |
522 | if (lapic->header.type != ACPI_MADT_TYPE_LOCAL_APIC || |
523 | !(lapic->lapic_flags & ACPI_MADT_ENABLED)) { | |
73fea175 AR |
524 | kfree(buffer.pointer); |
525 | return -EINVAL; | |
526 | } | |
527 | ||
528 | physid = lapic->id; | |
529 | ||
530 | kfree(buffer.pointer); | |
531 | buffer.length = ACPI_ALLOCATE_BUFFER; | |
532 | buffer.pointer = NULL; | |
533 | ||
534 | tmp_map = cpu_present_map; | |
5f3b1a8b | 535 | mp_register_lapic(physid, lapic->lapic_flags & ACPI_MADT_ENABLED); |
73fea175 AR |
536 | |
537 | /* | |
538 | * If mp_register_lapic successfully generates a new logical cpu | |
539 | * number, then the following will get us exactly what was mapped | |
540 | */ | |
541 | cpus_andnot(new_map, cpu_present_map, tmp_map); | |
542 | if (cpus_empty(new_map)) { | |
543 | printk ("Unable to map lapic to logical cpu number\n"); | |
544 | return -EINVAL; | |
545 | } | |
546 | ||
547 | cpu = first_cpu(new_map); | |
548 | ||
549 | *pcpu = cpu; | |
550 | return 0; | |
1da177e4 | 551 | } |
1da177e4 | 552 | |
4be44fcd | 553 | EXPORT_SYMBOL(acpi_map_lsapic); |
1da177e4 | 554 | |
4be44fcd | 555 | int acpi_unmap_lsapic(int cpu) |
1da177e4 | 556 | { |
73fea175 AR |
557 | x86_cpu_to_apicid[cpu] = -1; |
558 | cpu_clear(cpu, cpu_present_map); | |
559 | num_processors--; | |
560 | ||
561 | return (0); | |
1da177e4 | 562 | } |
4be44fcd | 563 | |
1da177e4 | 564 | EXPORT_SYMBOL(acpi_unmap_lsapic); |
4be44fcd | 565 | #endif /* CONFIG_ACPI_HOTPLUG_CPU */ |
1da177e4 | 566 | |
4be44fcd | 567 | int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base) |
b1bb248a KK |
568 | { |
569 | /* TBD */ | |
570 | return -EINVAL; | |
571 | } | |
4be44fcd | 572 | |
b1bb248a KK |
573 | EXPORT_SYMBOL(acpi_register_ioapic); |
574 | ||
4be44fcd | 575 | int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base) |
b1bb248a KK |
576 | { |
577 | /* TBD */ | |
578 | return -EINVAL; | |
579 | } | |
4be44fcd | 580 | |
b1bb248a KK |
581 | EXPORT_SYMBOL(acpi_unregister_ioapic); |
582 | ||
1da177e4 | 583 | static unsigned long __init |
4be44fcd | 584 | acpi_scan_rsdp(unsigned long start, unsigned long length) |
1da177e4 | 585 | { |
4be44fcd LB |
586 | unsigned long offset = 0; |
587 | unsigned long sig_len = sizeof("RSD PTR ") - 1; | |
1da177e4 LT |
588 | |
589 | /* | |
590 | * Scan all 16-byte boundaries of the physical memory region for the | |
591 | * RSDP signature. | |
592 | */ | |
593 | for (offset = 0; offset < length; offset += 16) { | |
f6c2e333 | 594 | if (strncmp((char *)(phys_to_virt(start) + offset), "RSD PTR ", sig_len)) |
1da177e4 LT |
595 | continue; |
596 | return (start + offset); | |
597 | } | |
598 | ||
599 | return 0; | |
600 | } | |
601 | ||
5f3b1a8b | 602 | static int __init acpi_parse_sbf(struct acpi_table_header *table) |
1da177e4 | 603 | { |
5f3b1a8b | 604 | struct acpi_table_boot *sb; |
1da177e4 | 605 | |
5f3b1a8b | 606 | sb = (struct acpi_table_boot *)table; |
1da177e4 LT |
607 | if (!sb) { |
608 | printk(KERN_WARNING PREFIX "Unable to map SBF\n"); | |
609 | return -ENODEV; | |
610 | } | |
611 | ||
5f3b1a8b | 612 | sbf_port = sb->cmos_index; /* Save CMOS port */ |
1da177e4 LT |
613 | |
614 | return 0; | |
615 | } | |
616 | ||
1da177e4 LT |
617 | #ifdef CONFIG_HPET_TIMER |
618 | ||
5f3b1a8b | 619 | static int __init acpi_parse_hpet(struct acpi_table_header *table) |
1da177e4 LT |
620 | { |
621 | struct acpi_table_hpet *hpet_tbl; | |
f0f4c343 AD |
622 | struct resource *hpet_res; |
623 | resource_size_t res_start; | |
1da177e4 | 624 | |
5f3b1a8b | 625 | hpet_tbl = (struct acpi_table_hpet *)table; |
1da177e4 LT |
626 | if (!hpet_tbl) { |
627 | printk(KERN_WARNING PREFIX "Unable to map HPET\n"); | |
628 | return -ENODEV; | |
629 | } | |
630 | ||
ad363f80 | 631 | if (hpet_tbl->address.space_id != ACPI_SPACE_MEM) { |
1da177e4 LT |
632 | printk(KERN_WARNING PREFIX "HPET timers must be located in " |
633 | "memory.\n"); | |
634 | return -1; | |
635 | } | |
f0f4c343 AD |
636 | |
637 | #define HPET_RESOURCE_NAME_SIZE 9 | |
638 | hpet_res = alloc_bootmem(sizeof(*hpet_res) + HPET_RESOURCE_NAME_SIZE); | |
639 | if (hpet_res) { | |
640 | memset(hpet_res, 0, sizeof(*hpet_res)); | |
641 | hpet_res->name = (void *)&hpet_res[1]; | |
642 | hpet_res->flags = IORESOURCE_MEM | IORESOURCE_BUSY; | |
643 | snprintf((char *)hpet_res->name, HPET_RESOURCE_NAME_SIZE, | |
ad363f80 | 644 | "HPET %u", hpet_tbl->sequence); |
f0f4c343 AD |
645 | hpet_res->end = (1 * 1024) - 1; |
646 | } | |
647 | ||
ad363f80 AS |
648 | #ifdef CONFIG_X86_64 |
649 | vxtime.hpet_address = hpet_tbl->address.address; | |
1da177e4 | 650 | |
4be44fcd | 651 | printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n", |
ad363f80 | 652 | hpet_tbl->id, vxtime.hpet_address); |
f0f4c343 AD |
653 | |
654 | res_start = vxtime.hpet_address; | |
ad363f80 | 655 | #else /* X86 */ |
1da177e4 LT |
656 | { |
657 | extern unsigned long hpet_address; | |
658 | ||
ad363f80 | 659 | hpet_address = hpet_tbl->address.address; |
1da177e4 | 660 | printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n", |
ad363f80 | 661 | hpet_tbl->id, hpet_address); |
f0f4c343 AD |
662 | |
663 | res_start = hpet_address; | |
1da177e4 | 664 | } |
ad363f80 | 665 | #endif /* X86 */ |
1da177e4 | 666 | |
f0f4c343 AD |
667 | if (hpet_res) { |
668 | hpet_res->start = res_start; | |
669 | hpet_res->end += res_start; | |
670 | insert_resource(&iomem_resource, hpet_res); | |
671 | } | |
672 | ||
1da177e4 LT |
673 | return 0; |
674 | } | |
675 | #else | |
676 | #define acpi_parse_hpet NULL | |
677 | #endif | |
678 | ||
679 | #ifdef CONFIG_X86_PM_TIMER | |
680 | extern u32 pmtmr_ioport; | |
681 | #endif | |
682 | ||
5f3b1a8b | 683 | static int __init acpi_parse_fadt(struct acpi_table_header *table) |
1da177e4 | 684 | { |
90660ec3 | 685 | |
1da177e4 LT |
686 | #ifdef CONFIG_X86_PM_TIMER |
687 | /* detect the location of the ACPI PM Timer */ | |
5f3b1a8b | 688 | if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID) { |
1da177e4 | 689 | /* FADT rev. 2 */ |
5f3b1a8b | 690 | if (acpi_gbl_FADT.xpm_timer_block.space_id != |
4be44fcd | 691 | ACPI_ADR_SPACE_SYSTEM_IO) |
1da177e4 LT |
692 | return 0; |
693 | ||
5f3b1a8b | 694 | pmtmr_ioport = acpi_gbl_FADT.xpm_timer_block.address; |
e6e87b4b DSL |
695 | /* |
696 | * "X" fields are optional extensions to the original V1.0 | |
697 | * fields, so we must selectively expand V1.0 fields if the | |
698 | * corresponding X field is zero. | |
699 | */ | |
700 | if (!pmtmr_ioport) | |
5f3b1a8b | 701 | pmtmr_ioport = acpi_gbl_FADT.pm_timer_block; |
1da177e4 LT |
702 | } else { |
703 | /* FADT rev. 1 */ | |
5f3b1a8b | 704 | pmtmr_ioport = acpi_gbl_FADT.pm_timer_block; |
1da177e4 LT |
705 | } |
706 | if (pmtmr_ioport) | |
4be44fcd LB |
707 | printk(KERN_INFO PREFIX "PM-Timer IO Port: %#x\n", |
708 | pmtmr_ioport); | |
1da177e4 LT |
709 | #endif |
710 | return 0; | |
711 | } | |
712 | ||
4be44fcd | 713 | unsigned long __init acpi_find_rsdp(void) |
1da177e4 | 714 | { |
4be44fcd | 715 | unsigned long rsdp_phys = 0; |
1da177e4 LT |
716 | |
717 | if (efi_enabled) { | |
b2c99e3c BH |
718 | if (efi.acpi20 != EFI_INVALID_TABLE_ADDR) |
719 | return efi.acpi20; | |
720 | else if (efi.acpi != EFI_INVALID_TABLE_ADDR) | |
721 | return efi.acpi; | |
1da177e4 LT |
722 | } |
723 | /* | |
724 | * Scan memory looking for the RSDP signature. First search EBDA (low | |
725 | * memory) paragraphs and then search upper memory (E0000-FFFFF). | |
726 | */ | |
4be44fcd | 727 | rsdp_phys = acpi_scan_rsdp(0, 0x400); |
1da177e4 | 728 | if (!rsdp_phys) |
4be44fcd | 729 | rsdp_phys = acpi_scan_rsdp(0xE0000, 0x20000); |
1da177e4 LT |
730 | |
731 | return rsdp_phys; | |
732 | } | |
733 | ||
734 | #ifdef CONFIG_X86_LOCAL_APIC | |
735 | /* | |
736 | * Parse LAPIC entries in MADT | |
737 | * returns 0 on success, < 0 on error | |
738 | */ | |
4be44fcd | 739 | static int __init acpi_parse_madt_lapic_entries(void) |
1da177e4 LT |
740 | { |
741 | int count; | |
742 | ||
0fcd2709 AK |
743 | if (!cpu_has_apic) |
744 | return -ENODEV; | |
745 | ||
5f3b1a8b | 746 | /* |
1da177e4 LT |
747 | * Note that the LAPIC address is obtained from the MADT (32-bit value) |
748 | * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value). | |
749 | */ | |
750 | ||
4be44fcd | 751 | count = |
5f3b1a8b | 752 | acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE, |
4be44fcd | 753 | acpi_parse_lapic_addr_ovr, 0); |
1da177e4 | 754 | if (count < 0) { |
4be44fcd LB |
755 | printk(KERN_ERR PREFIX |
756 | "Error parsing LAPIC address override entry\n"); | |
1da177e4 LT |
757 | return count; |
758 | } | |
759 | ||
760 | mp_register_lapic_address(acpi_lapic_addr); | |
761 | ||
5f3b1a8b | 762 | count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC, acpi_parse_lapic, |
4be44fcd LB |
763 | MAX_APICS); |
764 | if (!count) { | |
1da177e4 LT |
765 | printk(KERN_ERR PREFIX "No LAPIC entries present\n"); |
766 | /* TBD: Cleanup to allow fallback to MPS */ | |
767 | return -ENODEV; | |
4be44fcd | 768 | } else if (count < 0) { |
1da177e4 LT |
769 | printk(KERN_ERR PREFIX "Error parsing LAPIC entry\n"); |
770 | /* TBD: Cleanup to allow fallback to MPS */ | |
771 | return count; | |
772 | } | |
773 | ||
4be44fcd | 774 | count = |
5f3b1a8b | 775 | acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI, acpi_parse_lapic_nmi, 0); |
1da177e4 LT |
776 | if (count < 0) { |
777 | printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n"); | |
778 | /* TBD: Cleanup to allow fallback to MPS */ | |
779 | return count; | |
780 | } | |
781 | return 0; | |
782 | } | |
4be44fcd | 783 | #endif /* CONFIG_X86_LOCAL_APIC */ |
1da177e4 | 784 | |
8466361a | 785 | #ifdef CONFIG_X86_IO_APIC |
1da177e4 LT |
786 | /* |
787 | * Parse IOAPIC related entries in MADT | |
788 | * returns 0 on success, < 0 on error | |
789 | */ | |
4be44fcd | 790 | static int __init acpi_parse_madt_ioapic_entries(void) |
1da177e4 LT |
791 | { |
792 | int count; | |
793 | ||
794 | /* | |
795 | * ACPI interpreter is required to complete interrupt setup, | |
796 | * so if it is off, don't enumerate the io-apics with ACPI. | |
797 | * If MPS is present, it will handle them, | |
798 | * otherwise the system will stay in PIC mode | |
799 | */ | |
800 | if (acpi_disabled || acpi_noirq) { | |
801 | return -ENODEV; | |
4be44fcd | 802 | } |
1da177e4 | 803 | |
5f3b1a8b | 804 | if (!cpu_has_apic) |
d3b6a349 AK |
805 | return -ENODEV; |
806 | ||
1da177e4 | 807 | /* |
4be44fcd | 808 | * if "noapic" boot option, don't look for IO-APICs |
1da177e4 LT |
809 | */ |
810 | if (skip_ioapic_setup) { | |
811 | printk(KERN_INFO PREFIX "Skipping IOAPIC probe " | |
4be44fcd | 812 | "due to 'noapic' option.\n"); |
1da177e4 LT |
813 | return -ENODEV; |
814 | } | |
815 | ||
4be44fcd | 816 | count = |
5f3b1a8b | 817 | acpi_table_parse_madt(ACPI_MADT_TYPE_IO_APIC, acpi_parse_ioapic, |
4be44fcd | 818 | MAX_IO_APICS); |
1da177e4 LT |
819 | if (!count) { |
820 | printk(KERN_ERR PREFIX "No IOAPIC entries present\n"); | |
821 | return -ENODEV; | |
4be44fcd | 822 | } else if (count < 0) { |
1da177e4 LT |
823 | printk(KERN_ERR PREFIX "Error parsing IOAPIC entry\n"); |
824 | return count; | |
825 | } | |
826 | ||
4be44fcd | 827 | count = |
5f3b1a8b | 828 | acpi_table_parse_madt(ACPI_MADT_TYPE_INTERRUPT_OVERRIDE, acpi_parse_int_src_ovr, |
4be44fcd | 829 | NR_IRQ_VECTORS); |
1da177e4 | 830 | if (count < 0) { |
4be44fcd LB |
831 | printk(KERN_ERR PREFIX |
832 | "Error parsing interrupt source overrides entry\n"); | |
1da177e4 LT |
833 | /* TBD: Cleanup to allow fallback to MPS */ |
834 | return count; | |
835 | } | |
836 | ||
837 | /* | |
838 | * If BIOS did not supply an INT_SRC_OVR for the SCI | |
839 | * pretend we got one so we can set the SCI flags. | |
840 | */ | |
841 | if (!acpi_sci_override_gsi) | |
cee324b1 | 842 | acpi_sci_ioapic_setup(acpi_gbl_FADT.sci_interrupt, 0, 0); |
1da177e4 LT |
843 | |
844 | /* Fill in identity legacy mapings where no override */ | |
845 | mp_config_acpi_legacy_irqs(); | |
846 | ||
4be44fcd | 847 | count = |
5f3b1a8b | 848 | acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE, acpi_parse_nmi_src, |
4be44fcd | 849 | NR_IRQ_VECTORS); |
1da177e4 LT |
850 | if (count < 0) { |
851 | printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n"); | |
852 | /* TBD: Cleanup to allow fallback to MPS */ | |
853 | return count; | |
854 | } | |
855 | ||
856 | return 0; | |
857 | } | |
858 | #else | |
859 | static inline int acpi_parse_madt_ioapic_entries(void) | |
860 | { | |
861 | return -1; | |
862 | } | |
8466361a | 863 | #endif /* !CONFIG_X86_IO_APIC */ |
1da177e4 | 864 | |
4be44fcd | 865 | static void __init acpi_process_madt(void) |
1da177e4 LT |
866 | { |
867 | #ifdef CONFIG_X86_LOCAL_APIC | |
868 | int count, error; | |
869 | ||
5f3b1a8b | 870 | count = acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt); |
1da177e4 LT |
871 | if (count >= 1) { |
872 | ||
873 | /* | |
874 | * Parse MADT LAPIC entries | |
875 | */ | |
876 | error = acpi_parse_madt_lapic_entries(); | |
877 | if (!error) { | |
878 | acpi_lapic = 1; | |
879 | ||
911a62d4 VP |
880 | #ifdef CONFIG_X86_GENERICARCH |
881 | generic_bigsmp_probe(); | |
882 | #endif | |
1da177e4 LT |
883 | /* |
884 | * Parse MADT IO-APIC entries | |
885 | */ | |
886 | error = acpi_parse_madt_ioapic_entries(); | |
887 | if (!error) { | |
888 | acpi_irq_model = ACPI_IRQ_MODEL_IOAPIC; | |
889 | acpi_irq_balance_set(NULL); | |
890 | acpi_ioapic = 1; | |
891 | ||
892 | smp_found_config = 1; | |
893 | clustered_apic_check(); | |
894 | } | |
895 | } | |
896 | if (error == -EINVAL) { | |
897 | /* | |
898 | * Dell Precision Workstation 410, 610 come here. | |
899 | */ | |
4be44fcd LB |
900 | printk(KERN_ERR PREFIX |
901 | "Invalid BIOS MADT, disabling ACPI\n"); | |
1da177e4 LT |
902 | disable_acpi(); |
903 | } | |
904 | } | |
905 | #endif | |
906 | return; | |
907 | } | |
908 | ||
aea00143 AP |
909 | #ifdef __i386__ |
910 | ||
aea00143 AP |
911 | static int __init disable_acpi_irq(struct dmi_system_id *d) |
912 | { | |
913 | if (!acpi_force) { | |
914 | printk(KERN_NOTICE "%s detected: force use of acpi=noirq\n", | |
915 | d->ident); | |
916 | acpi_noirq_set(); | |
917 | } | |
918 | return 0; | |
919 | } | |
920 | ||
921 | static int __init disable_acpi_pci(struct dmi_system_id *d) | |
922 | { | |
923 | if (!acpi_force) { | |
924 | printk(KERN_NOTICE "%s detected: force use of pci=noacpi\n", | |
925 | d->ident); | |
926 | acpi_disable_pci(); | |
927 | } | |
928 | return 0; | |
929 | } | |
aea00143 AP |
930 | |
931 | static int __init dmi_disable_acpi(struct dmi_system_id *d) | |
932 | { | |
933 | if (!acpi_force) { | |
4be44fcd | 934 | printk(KERN_NOTICE "%s detected: acpi off\n", d->ident); |
aea00143 AP |
935 | disable_acpi(); |
936 | } else { | |
937 | printk(KERN_NOTICE | |
938 | "Warning: DMI blacklist says broken, but acpi forced\n"); | |
939 | } | |
940 | return 0; | |
941 | } | |
942 | ||
943 | /* | |
944 | * Limit ACPI to CPU enumeration for HT | |
945 | */ | |
946 | static int __init force_acpi_ht(struct dmi_system_id *d) | |
947 | { | |
948 | if (!acpi_force) { | |
4be44fcd LB |
949 | printk(KERN_NOTICE "%s detected: force use of acpi=ht\n", |
950 | d->ident); | |
aea00143 AP |
951 | disable_acpi(); |
952 | acpi_ht = 1; | |
953 | } else { | |
954 | printk(KERN_NOTICE | |
955 | "Warning: acpi=force overrules DMI blacklist: acpi=ht\n"); | |
956 | } | |
957 | return 0; | |
958 | } | |
959 | ||
960 | /* | |
961 | * If your system is blacklisted here, but you find that acpi=force | |
962 | * works for you, please contact acpi-devel@sourceforge.net | |
963 | */ | |
964 | static struct dmi_system_id __initdata acpi_dmi_table[] = { | |
965 | /* | |
966 | * Boxes that need ACPI disabled | |
967 | */ | |
968 | { | |
4be44fcd LB |
969 | .callback = dmi_disable_acpi, |
970 | .ident = "IBM Thinkpad", | |
971 | .matches = { | |
972 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), | |
973 | DMI_MATCH(DMI_BOARD_NAME, "2629H1G"), | |
974 | }, | |
975 | }, | |
aea00143 AP |
976 | |
977 | /* | |
978 | * Boxes that need acpi=ht | |
979 | */ | |
980 | { | |
4be44fcd LB |
981 | .callback = force_acpi_ht, |
982 | .ident = "FSC Primergy T850", | |
983 | .matches = { | |
984 | DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), | |
985 | DMI_MATCH(DMI_PRODUCT_NAME, "PRIMERGY T850"), | |
986 | }, | |
987 | }, | |
aea00143 | 988 | { |
4be44fcd LB |
989 | .callback = force_acpi_ht, |
990 | .ident = "DELL GX240", | |
991 | .matches = { | |
992 | DMI_MATCH(DMI_BOARD_VENDOR, "Dell Computer Corporation"), | |
993 | DMI_MATCH(DMI_BOARD_NAME, "OptiPlex GX240"), | |
994 | }, | |
995 | }, | |
aea00143 | 996 | { |
4be44fcd LB |
997 | .callback = force_acpi_ht, |
998 | .ident = "HP VISUALIZE NT Workstation", | |
999 | .matches = { | |
1000 | DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"), | |
1001 | DMI_MATCH(DMI_PRODUCT_NAME, "HP VISUALIZE NT Workstation"), | |
1002 | }, | |
1003 | }, | |
aea00143 | 1004 | { |
4be44fcd LB |
1005 | .callback = force_acpi_ht, |
1006 | .ident = "Compaq Workstation W8000", | |
1007 | .matches = { | |
1008 | DMI_MATCH(DMI_SYS_VENDOR, "Compaq"), | |
1009 | DMI_MATCH(DMI_PRODUCT_NAME, "Workstation W8000"), | |
1010 | }, | |
1011 | }, | |
aea00143 | 1012 | { |
4be44fcd LB |
1013 | .callback = force_acpi_ht, |
1014 | .ident = "ASUS P4B266", | |
1015 | .matches = { | |
1016 | DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), | |
1017 | DMI_MATCH(DMI_BOARD_NAME, "P4B266"), | |
1018 | }, | |
1019 | }, | |
aea00143 | 1020 | { |
4be44fcd LB |
1021 | .callback = force_acpi_ht, |
1022 | .ident = "ASUS P2B-DS", | |
1023 | .matches = { | |
1024 | DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), | |
1025 | DMI_MATCH(DMI_BOARD_NAME, "P2B-DS"), | |
1026 | }, | |
1027 | }, | |
aea00143 | 1028 | { |
4be44fcd LB |
1029 | .callback = force_acpi_ht, |
1030 | .ident = "ASUS CUR-DLS", | |
1031 | .matches = { | |
1032 | DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), | |
1033 | DMI_MATCH(DMI_BOARD_NAME, "CUR-DLS"), | |
1034 | }, | |
1035 | }, | |
aea00143 | 1036 | { |
4be44fcd LB |
1037 | .callback = force_acpi_ht, |
1038 | .ident = "ABIT i440BX-W83977", | |
1039 | .matches = { | |
1040 | DMI_MATCH(DMI_BOARD_VENDOR, "ABIT <http://www.abit.com>"), | |
1041 | DMI_MATCH(DMI_BOARD_NAME, "i440BX-W83977 (BP6)"), | |
1042 | }, | |
1043 | }, | |
aea00143 | 1044 | { |
4be44fcd LB |
1045 | .callback = force_acpi_ht, |
1046 | .ident = "IBM Bladecenter", | |
1047 | .matches = { | |
1048 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), | |
1049 | DMI_MATCH(DMI_BOARD_NAME, "IBM eServer BladeCenter HS20"), | |
1050 | }, | |
1051 | }, | |
aea00143 | 1052 | { |
4be44fcd LB |
1053 | .callback = force_acpi_ht, |
1054 | .ident = "IBM eServer xSeries 360", | |
1055 | .matches = { | |
1056 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), | |
1057 | DMI_MATCH(DMI_BOARD_NAME, "eServer xSeries 360"), | |
1058 | }, | |
1059 | }, | |
aea00143 | 1060 | { |
4be44fcd LB |
1061 | .callback = force_acpi_ht, |
1062 | .ident = "IBM eserver xSeries 330", | |
1063 | .matches = { | |
1064 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), | |
1065 | DMI_MATCH(DMI_BOARD_NAME, "eserver xSeries 330"), | |
1066 | }, | |
1067 | }, | |
aea00143 | 1068 | { |
4be44fcd LB |
1069 | .callback = force_acpi_ht, |
1070 | .ident = "IBM eserver xSeries 440", | |
1071 | .matches = { | |
1072 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), | |
1073 | DMI_MATCH(DMI_PRODUCT_NAME, "eserver xSeries 440"), | |
1074 | }, | |
1075 | }, | |
aea00143 | 1076 | |
aea00143 AP |
1077 | /* |
1078 | * Boxes that need ACPI PCI IRQ routing disabled | |
1079 | */ | |
1080 | { | |
4be44fcd LB |
1081 | .callback = disable_acpi_irq, |
1082 | .ident = "ASUS A7V", | |
1083 | .matches = { | |
1084 | DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC"), | |
1085 | DMI_MATCH(DMI_BOARD_NAME, "<A7V>"), | |
1086 | /* newer BIOS, Revision 1011, does work */ | |
1087 | DMI_MATCH(DMI_BIOS_VERSION, | |
1088 | "ASUS A7V ACPI BIOS Revision 1007"), | |
1089 | }, | |
1090 | }, | |
aea00143 AP |
1091 | |
1092 | /* | |
1093 | * Boxes that need ACPI PCI IRQ routing and PCI scan disabled | |
1094 | */ | |
4be44fcd LB |
1095 | { /* _BBN 0 bug */ |
1096 | .callback = disable_acpi_pci, | |
1097 | .ident = "ASUS PR-DLS", | |
1098 | .matches = { | |
1099 | DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), | |
1100 | DMI_MATCH(DMI_BOARD_NAME, "PR-DLS"), | |
1101 | DMI_MATCH(DMI_BIOS_VERSION, | |
1102 | "ASUS PR-DLS ACPI BIOS Revision 1010"), | |
1103 | DMI_MATCH(DMI_BIOS_DATE, "03/21/2003") | |
1104 | }, | |
1105 | }, | |
aea00143 | 1106 | { |
4be44fcd LB |
1107 | .callback = disable_acpi_pci, |
1108 | .ident = "Acer TravelMate 36x Laptop", | |
1109 | .matches = { | |
1110 | DMI_MATCH(DMI_SYS_VENDOR, "Acer"), | |
1111 | DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 360"), | |
1112 | }, | |
1113 | }, | |
4be44fcd | 1114 | {} |
aea00143 AP |
1115 | }; |
1116 | ||
4be44fcd | 1117 | #endif /* __i386__ */ |
aea00143 | 1118 | |
1da177e4 LT |
1119 | /* |
1120 | * acpi_boot_table_init() and acpi_boot_init() | |
1121 | * called from setup_arch(), always. | |
1122 | * 1. checksums all tables | |
1123 | * 2. enumerates lapics | |
1124 | * 3. enumerates io-apics | |
1125 | * | |
1126 | * acpi_table_init() is separate to allow reading SRAT without | |
1127 | * other side effects. | |
1128 | * | |
1129 | * side effects of acpi_boot_init: | |
1130 | * acpi_lapic = 1 if LAPIC found | |
1131 | * acpi_ioapic = 1 if IOAPIC found | |
1132 | * if (acpi_lapic && acpi_ioapic) smp_found_config = 1; | |
1133 | * if acpi_blacklisted() acpi_disabled = 1; | |
1134 | * acpi_irq_model=... | |
1135 | * ... | |
1136 | * | |
1137 | * return value: (currently ignored) | |
1138 | * 0: success | |
1139 | * !0: failure | |
1140 | */ | |
1141 | ||
4be44fcd | 1142 | int __init acpi_boot_table_init(void) |
1da177e4 LT |
1143 | { |
1144 | int error; | |
1145 | ||
aea00143 AP |
1146 | #ifdef __i386__ |
1147 | dmi_check_system(acpi_dmi_table); | |
1148 | #endif | |
1149 | ||
1da177e4 LT |
1150 | /* |
1151 | * If acpi_disabled, bail out | |
1152 | * One exception: acpi=ht continues far enough to enumerate LAPICs | |
1153 | */ | |
1154 | if (acpi_disabled && !acpi_ht) | |
4be44fcd | 1155 | return 1; |
1da177e4 | 1156 | |
5f3b1a8b | 1157 | /* |
1da177e4 LT |
1158 | * Initialize the ACPI boot-time table parser. |
1159 | */ | |
1160 | error = acpi_table_init(); | |
1161 | if (error) { | |
1162 | disable_acpi(); | |
1163 | return error; | |
1164 | } | |
1da177e4 | 1165 | |
5f3b1a8b | 1166 | acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf); |
1da177e4 LT |
1167 | |
1168 | /* | |
1169 | * blacklist may disable ACPI entirely | |
1170 | */ | |
1171 | error = acpi_blacklisted(); | |
1172 | if (error) { | |
1da177e4 LT |
1173 | if (acpi_force) { |
1174 | printk(KERN_WARNING PREFIX "acpi=force override\n"); | |
1175 | } else { | |
1176 | printk(KERN_WARNING PREFIX "Disabling ACPI support\n"); | |
1177 | disable_acpi(); | |
1178 | return error; | |
1179 | } | |
1180 | } | |
1181 | ||
1182 | return 0; | |
1183 | } | |
1184 | ||
1da177e4 LT |
1185 | int __init acpi_boot_init(void) |
1186 | { | |
1187 | /* | |
1188 | * If acpi_disabled, bail out | |
1189 | * One exception: acpi=ht continues far enough to enumerate LAPICs | |
1190 | */ | |
1191 | if (acpi_disabled && !acpi_ht) | |
4be44fcd | 1192 | return 1; |
1da177e4 | 1193 | |
5f3b1a8b | 1194 | acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf); |
1da177e4 LT |
1195 | |
1196 | /* | |
1197 | * set sci_int and PM timer address | |
1198 | */ | |
ceb6c468 | 1199 | acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt); |
1da177e4 LT |
1200 | |
1201 | /* | |
1202 | * Process the Multiple APIC Description Table (MADT), if present | |
1203 | */ | |
1204 | acpi_process_madt(); | |
1205 | ||
5f3b1a8b | 1206 | acpi_table_parse(ACPI_SIG_HPET, acpi_parse_hpet); |
1da177e4 LT |
1207 | |
1208 | return 0; | |
1209 | } | |
1a3f239d RR |
1210 | |
1211 | static int __init parse_acpi(char *arg) | |
1212 | { | |
1213 | if (!arg) | |
1214 | return -EINVAL; | |
1215 | ||
1216 | /* "acpi=off" disables both ACPI table parsing and interpreter */ | |
1217 | if (strcmp(arg, "off") == 0) { | |
1218 | disable_acpi(); | |
1219 | } | |
1220 | /* acpi=force to over-ride black-list */ | |
1221 | else if (strcmp(arg, "force") == 0) { | |
1222 | acpi_force = 1; | |
1223 | acpi_ht = 1; | |
1224 | acpi_disabled = 0; | |
1225 | } | |
1226 | /* acpi=strict disables out-of-spec workarounds */ | |
1227 | else if (strcmp(arg, "strict") == 0) { | |
1228 | acpi_strict = 1; | |
1229 | } | |
1230 | /* Limit ACPI just to boot-time to enable HT */ | |
1231 | else if (strcmp(arg, "ht") == 0) { | |
1232 | if (!acpi_force) | |
1233 | disable_acpi(); | |
1234 | acpi_ht = 1; | |
1235 | } | |
1236 | /* "acpi=noirq" disables ACPI interrupt routing */ | |
1237 | else if (strcmp(arg, "noirq") == 0) { | |
1238 | acpi_noirq_set(); | |
1239 | } else { | |
1240 | /* Core will printk when we return error. */ | |
1241 | return -EINVAL; | |
1242 | } | |
1243 | return 0; | |
1244 | } | |
1245 | early_param("acpi", parse_acpi); | |
1246 | ||
1247 | /* FIXME: Using pci= for an ACPI parameter is a travesty. */ | |
1248 | static int __init parse_pci(char *arg) | |
1249 | { | |
1250 | if (arg && strcmp(arg, "noacpi") == 0) | |
1251 | acpi_disable_pci(); | |
1252 | return 0; | |
1253 | } | |
1254 | early_param("pci", parse_pci); | |
1255 | ||
1256 | #ifdef CONFIG_X86_IO_APIC | |
1257 | static int __init parse_acpi_skip_timer_override(char *arg) | |
1258 | { | |
1259 | acpi_skip_timer_override = 1; | |
1260 | return 0; | |
1261 | } | |
1262 | early_param("acpi_skip_timer_override", parse_acpi_skip_timer_override); | |
fa18f477 AK |
1263 | |
1264 | static int __init parse_acpi_use_timer_override(char *arg) | |
1265 | { | |
1266 | acpi_use_timer_override = 1; | |
1267 | return 0; | |
1268 | } | |
1269 | early_param("acpi_use_timer_override", parse_acpi_use_timer_override); | |
1a3f239d RR |
1270 | #endif /* CONFIG_X86_IO_APIC */ |
1271 | ||
1272 | static int __init setup_acpi_sci(char *s) | |
1273 | { | |
1274 | if (!s) | |
1275 | return -EINVAL; | |
1276 | if (!strcmp(s, "edge")) | |
5f3b1a8b AS |
1277 | acpi_sci_flags = ACPI_MADT_TRIGGER_EDGE | |
1278 | (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK); | |
1a3f239d | 1279 | else if (!strcmp(s, "level")) |
5f3b1a8b AS |
1280 | acpi_sci_flags = ACPI_MADT_TRIGGER_LEVEL | |
1281 | (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK); | |
1a3f239d | 1282 | else if (!strcmp(s, "high")) |
5f3b1a8b AS |
1283 | acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_HIGH | |
1284 | (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK); | |
1a3f239d | 1285 | else if (!strcmp(s, "low")) |
5f3b1a8b AS |
1286 | acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_LOW | |
1287 | (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK); | |
1a3f239d RR |
1288 | else |
1289 | return -EINVAL; | |
1290 | return 0; | |
1291 | } | |
1292 | early_param("acpi_sci", setup_acpi_sci); | |
d0a9081b AM |
1293 | |
1294 | int __acpi_acquire_global_lock(unsigned int *lock) | |
1295 | { | |
1296 | unsigned int old, new, val; | |
1297 | do { | |
1298 | old = *lock; | |
1299 | new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1)); | |
1300 | val = cmpxchg(lock, old, new); | |
1301 | } while (unlikely (val != old)); | |
1302 | return (new < 3) ? -1 : 0; | |
1303 | } | |
1304 | ||
1305 | int __acpi_release_global_lock(unsigned int *lock) | |
1306 | { | |
1307 | unsigned int old, new, val; | |
1308 | do { | |
1309 | old = *lock; | |
1310 | new = old & ~0x3; | |
1311 | val = cmpxchg(lock, old, new); | |
1312 | } while (unlikely (val != old)); | |
1313 | return old & 0x1; | |
1314 | } |