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1da177e4 LT |
1 | /* |
2 | * boot.c - Architecture-Specific Low-Level ACPI Boot Support | |
3 | * | |
4 | * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com> | |
5 | * Copyright (C) 2001 Jun Nakajima <jun.nakajima@intel.com> | |
6 | * | |
7 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
22 | * | |
23 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
24 | */ | |
25 | ||
26 | #include <linux/init.h> | |
1da177e4 | 27 | #include <linux/acpi.h> |
d66bea57 | 28 | #include <linux/acpi_pmtmr.h> |
1da177e4 | 29 | #include <linux/efi.h> |
73fea175 | 30 | #include <linux/cpumask.h> |
1da177e4 | 31 | #include <linux/module.h> |
aea00143 | 32 | #include <linux/dmi.h> |
b33fa1f3 | 33 | #include <linux/irq.h> |
f0f4c343 AD |
34 | #include <linux/bootmem.h> |
35 | #include <linux/ioport.h> | |
1da177e4 LT |
36 | |
37 | #include <asm/pgtable.h> | |
38 | #include <asm/io_apic.h> | |
39 | #include <asm/apic.h> | |
40 | #include <asm/io.h> | |
1da177e4 LT |
41 | #include <asm/mpspec.h> |
42 | ||
e8924acb | 43 | static int __initdata acpi_force = 0; |
1a3f239d | 44 | |
df3bb57d AK |
45 | #ifdef CONFIG_ACPI |
46 | int acpi_disabled = 0; | |
47 | #else | |
48 | int acpi_disabled = 1; | |
49 | #endif | |
50 | EXPORT_SYMBOL(acpi_disabled); | |
51 | ||
1da177e4 LT |
52 | #ifdef CONFIG_X86_64 |
53 | ||
1da177e4 LT |
54 | #include <asm/proto.h> |
55 | ||
637029c6 LT |
56 | static inline int acpi_madt_oem_check(char *oem_id, char *oem_table_id) { return 0; } |
57 | ||
58 | ||
4be44fcd | 59 | #else /* X86 */ |
1da177e4 LT |
60 | |
61 | #ifdef CONFIG_X86_LOCAL_APIC | |
62 | #include <mach_apic.h> | |
63 | #include <mach_mpparse.h> | |
4be44fcd | 64 | #endif /* CONFIG_X86_LOCAL_APIC */ |
1da177e4 | 65 | |
4be44fcd | 66 | #endif /* X86 */ |
1da177e4 LT |
67 | |
68 | #define BAD_MADT_ENTRY(entry, end) ( \ | |
69 | (!entry) || (unsigned long)entry + sizeof(*entry) > end || \ | |
5f3b1a8b | 70 | ((struct acpi_subtable_header *)entry)->length < sizeof(*entry)) |
1da177e4 LT |
71 | |
72 | #define PREFIX "ACPI: " | |
73 | ||
90d53909 | 74 | int acpi_noirq; /* skip ACPI IRQ initialization */ |
4be44fcd | 75 | int acpi_pci_disabled __initdata; /* skip ACPI PCI scan and IRQ initialization */ |
1da177e4 LT |
76 | int acpi_ht __initdata = 1; /* enable HT */ |
77 | ||
78 | int acpi_lapic; | |
79 | int acpi_ioapic; | |
80 | int acpi_strict; | |
81 | EXPORT_SYMBOL(acpi_strict); | |
82 | ||
5f3b1a8b | 83 | u8 acpi_sci_flags __initdata; |
1da177e4 LT |
84 | int acpi_sci_override_gsi __initdata; |
85 | int acpi_skip_timer_override __initdata; | |
fa18f477 | 86 | int acpi_use_timer_override __initdata; |
1da177e4 LT |
87 | |
88 | #ifdef CONFIG_X86_LOCAL_APIC | |
89 | static u64 acpi_lapic_addr __initdata = APIC_DEFAULT_PHYS_BASE; | |
90 | #endif | |
91 | ||
92 | #ifndef __HAVE_ARCH_CMPXCHG | |
93 | #warning ACPI uses CMPXCHG, i486 and later hardware | |
94 | #endif | |
95 | ||
1da177e4 LT |
96 | /* -------------------------------------------------------------------------- |
97 | Boot-time Configuration | |
98 | -------------------------------------------------------------------------- */ | |
99 | ||
100 | /* | |
101 | * The default interrupt routing model is PIC (8259). This gets | |
27b46d76 | 102 | * overridden if IOAPICs are enumerated (below). |
1da177e4 | 103 | */ |
4be44fcd | 104 | enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_PIC; |
1da177e4 LT |
105 | |
106 | #ifdef CONFIG_X86_64 | |
107 | ||
108 | /* rely on all ACPI tables being in the direct mapping */ | |
109 | char *__acpi_map_table(unsigned long phys_addr, unsigned long size) | |
110 | { | |
111 | if (!phys_addr || !size) | |
4be44fcd | 112 | return NULL; |
1da177e4 | 113 | |
7a4a76cc | 114 | if (phys_addr+size <= (end_pfn_map << PAGE_SHIFT) + PAGE_SIZE) |
1da177e4 LT |
115 | return __va(phys_addr); |
116 | ||
117 | return NULL; | |
118 | } | |
119 | ||
120 | #else | |
121 | ||
122 | /* | |
123 | * Temporarily use the virtual area starting from FIX_IO_APIC_BASE_END, | |
124 | * to map the target physical address. The problem is that set_fixmap() | |
125 | * provides a single page, and it is possible that the page is not | |
126 | * sufficient. | |
127 | * By using this area, we can map up to MAX_IO_APICS pages temporarily, | |
128 | * i.e. until the next __va_range() call. | |
129 | * | |
130 | * Important Safety Note: The fixed I/O APIC page numbers are *subtracted* | |
131 | * from the fixed base. That's why we start at FIX_IO_APIC_BASE_END and | |
132 | * count idx down while incrementing the phys address. | |
133 | */ | |
134 | char *__acpi_map_table(unsigned long phys, unsigned long size) | |
135 | { | |
136 | unsigned long base, offset, mapped_size; | |
137 | int idx; | |
138 | ||
4be44fcd LB |
139 | if (phys + size < 8 * 1024 * 1024) |
140 | return __va(phys); | |
1da177e4 LT |
141 | |
142 | offset = phys & (PAGE_SIZE - 1); | |
143 | mapped_size = PAGE_SIZE - offset; | |
144 | set_fixmap(FIX_ACPI_END, phys); | |
145 | base = fix_to_virt(FIX_ACPI_END); | |
146 | ||
147 | /* | |
148 | * Most cases can be covered by the below. | |
149 | */ | |
150 | idx = FIX_ACPI_END; | |
151 | while (mapped_size < size) { | |
152 | if (--idx < FIX_ACPI_BEGIN) | |
153 | return NULL; /* cannot handle this */ | |
154 | phys += PAGE_SIZE; | |
155 | set_fixmap(idx, phys); | |
156 | mapped_size += PAGE_SIZE; | |
157 | } | |
158 | ||
4be44fcd | 159 | return ((unsigned char *)base + offset); |
1da177e4 LT |
160 | } |
161 | #endif | |
162 | ||
163 | #ifdef CONFIG_PCI_MMCONFIG | |
54549391 | 164 | /* The physical address of the MMCONFIG aperture. Set from ACPI tables. */ |
15a58ed1 | 165 | struct acpi_mcfg_allocation *pci_mmcfg_config; |
54549391 GKH |
166 | int pci_mmcfg_config_num; |
167 | ||
ceb6c468 | 168 | int __init acpi_parse_mcfg(struct acpi_table_header *header) |
1da177e4 LT |
169 | { |
170 | struct acpi_table_mcfg *mcfg; | |
54549391 GKH |
171 | unsigned long i; |
172 | int config_size; | |
1da177e4 | 173 | |
ceb6c468 | 174 | if (!header) |
1da177e4 LT |
175 | return -EINVAL; |
176 | ||
ceb6c468 | 177 | mcfg = (struct acpi_table_mcfg *)header; |
1da177e4 | 178 | |
54549391 GKH |
179 | /* how many config structures do we have */ |
180 | pci_mmcfg_config_num = 0; | |
ceb6c468 | 181 | i = header->length - sizeof(struct acpi_table_mcfg); |
15a58ed1 | 182 | while (i >= sizeof(struct acpi_mcfg_allocation)) { |
54549391 | 183 | ++pci_mmcfg_config_num; |
15a58ed1 | 184 | i -= sizeof(struct acpi_mcfg_allocation); |
54549391 GKH |
185 | }; |
186 | if (pci_mmcfg_config_num == 0) { | |
187 | printk(KERN_ERR PREFIX "MMCONFIG has no entries\n"); | |
1da177e4 LT |
188 | return -ENODEV; |
189 | } | |
190 | ||
54549391 GKH |
191 | config_size = pci_mmcfg_config_num * sizeof(*pci_mmcfg_config); |
192 | pci_mmcfg_config = kmalloc(config_size, GFP_KERNEL); | |
193 | if (!pci_mmcfg_config) { | |
194 | printk(KERN_WARNING PREFIX | |
195 | "No memory for MCFG config tables\n"); | |
196 | return -ENOMEM; | |
197 | } | |
198 | ||
ad363f80 | 199 | memcpy(pci_mmcfg_config, &mcfg[1], config_size); |
54549391 | 200 | for (i = 0; i < pci_mmcfg_config_num; ++i) { |
15a58ed1 | 201 | if (pci_mmcfg_config[i].address > 0xFFFFFFFF) { |
54549391 GKH |
202 | printk(KERN_ERR PREFIX |
203 | "MMCONFIG not in low 4GB of memory\n"); | |
acc7c2e0 KR |
204 | kfree(pci_mmcfg_config); |
205 | pci_mmcfg_config_num = 0; | |
54549391 GKH |
206 | return -ENODEV; |
207 | } | |
208 | } | |
1da177e4 LT |
209 | |
210 | return 0; | |
211 | } | |
4be44fcd | 212 | #endif /* CONFIG_PCI_MMCONFIG */ |
1da177e4 LT |
213 | |
214 | #ifdef CONFIG_X86_LOCAL_APIC | |
15a58ed1 | 215 | static int __init acpi_parse_madt(struct acpi_table_header *table) |
1da177e4 | 216 | { |
4be44fcd | 217 | struct acpi_table_madt *madt = NULL; |
1da177e4 | 218 | |
15a58ed1 | 219 | if (!cpu_has_apic) |
1da177e4 LT |
220 | return -EINVAL; |
221 | ||
15a58ed1 | 222 | madt = (struct acpi_table_madt *)table; |
1da177e4 LT |
223 | if (!madt) { |
224 | printk(KERN_WARNING PREFIX "Unable to map MADT\n"); | |
225 | return -ENODEV; | |
226 | } | |
227 | ||
ad363f80 AS |
228 | if (madt->address) { |
229 | acpi_lapic_addr = (u64) madt->address; | |
1da177e4 LT |
230 | |
231 | printk(KERN_DEBUG PREFIX "Local APIC address 0x%08x\n", | |
ad363f80 | 232 | madt->address); |
1da177e4 LT |
233 | } |
234 | ||
235 | acpi_madt_oem_check(madt->header.oem_id, madt->header.oem_table_id); | |
4be44fcd | 236 | |
1da177e4 LT |
237 | return 0; |
238 | } | |
239 | ||
1da177e4 | 240 | static int __init |
5f3b1a8b | 241 | acpi_parse_lapic(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 242 | { |
5f3b1a8b | 243 | struct acpi_madt_local_apic *processor = NULL; |
1da177e4 | 244 | |
5f3b1a8b | 245 | processor = (struct acpi_madt_local_apic *)header; |
1da177e4 LT |
246 | |
247 | if (BAD_MADT_ENTRY(processor, end)) | |
248 | return -EINVAL; | |
249 | ||
250 | acpi_table_print_madt_entry(header); | |
251 | ||
7f66ae48 AR |
252 | /* |
253 | * We need to register disabled CPU as well to permit | |
254 | * counting disabled CPUs. This allows us to size | |
255 | * cpus_possible_map more accurately, to permit | |
256 | * to not preallocating memory for all NR_CPUS | |
257 | * when we use CPU hotplug. | |
258 | */ | |
4be44fcd | 259 | mp_register_lapic(processor->id, /* APIC ID */ |
5f3b1a8b | 260 | processor->lapic_flags & ACPI_MADT_ENABLED); /* Enabled? */ |
1da177e4 LT |
261 | |
262 | return 0; | |
263 | } | |
264 | ||
265 | static int __init | |
5f3b1a8b | 266 | acpi_parse_lapic_addr_ovr(struct acpi_subtable_header * header, |
4be44fcd | 267 | const unsigned long end) |
1da177e4 | 268 | { |
5f3b1a8b | 269 | struct acpi_madt_local_apic_override *lapic_addr_ovr = NULL; |
1da177e4 | 270 | |
5f3b1a8b | 271 | lapic_addr_ovr = (struct acpi_madt_local_apic_override *)header; |
1da177e4 LT |
272 | |
273 | if (BAD_MADT_ENTRY(lapic_addr_ovr, end)) | |
274 | return -EINVAL; | |
275 | ||
276 | acpi_lapic_addr = lapic_addr_ovr->address; | |
277 | ||
278 | return 0; | |
279 | } | |
280 | ||
281 | static int __init | |
5f3b1a8b | 282 | acpi_parse_lapic_nmi(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 283 | { |
5f3b1a8b | 284 | struct acpi_madt_local_apic_nmi *lapic_nmi = NULL; |
1da177e4 | 285 | |
5f3b1a8b | 286 | lapic_nmi = (struct acpi_madt_local_apic_nmi *)header; |
1da177e4 LT |
287 | |
288 | if (BAD_MADT_ENTRY(lapic_nmi, end)) | |
289 | return -EINVAL; | |
290 | ||
291 | acpi_table_print_madt_entry(header); | |
292 | ||
293 | if (lapic_nmi->lint != 1) | |
294 | printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n"); | |
295 | ||
296 | return 0; | |
297 | } | |
298 | ||
4be44fcd | 299 | #endif /*CONFIG_X86_LOCAL_APIC */ |
1da177e4 | 300 | |
8466361a | 301 | #ifdef CONFIG_X86_IO_APIC |
1da177e4 LT |
302 | |
303 | static int __init | |
5f3b1a8b | 304 | acpi_parse_ioapic(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 305 | { |
5f3b1a8b | 306 | struct acpi_madt_io_apic *ioapic = NULL; |
1da177e4 | 307 | |
5f3b1a8b | 308 | ioapic = (struct acpi_madt_io_apic *)header; |
1da177e4 LT |
309 | |
310 | if (BAD_MADT_ENTRY(ioapic, end)) | |
311 | return -EINVAL; | |
4be44fcd | 312 | |
1da177e4 LT |
313 | acpi_table_print_madt_entry(header); |
314 | ||
4be44fcd LB |
315 | mp_register_ioapic(ioapic->id, |
316 | ioapic->address, ioapic->global_irq_base); | |
317 | ||
1da177e4 LT |
318 | return 0; |
319 | } | |
320 | ||
321 | /* | |
322 | * Parse Interrupt Source Override for the ACPI SCI | |
323 | */ | |
e82c354b | 324 | static void __init acpi_sci_ioapic_setup(u32 gsi, u16 polarity, u16 trigger) |
1da177e4 LT |
325 | { |
326 | if (trigger == 0) /* compatible SCI trigger is level */ | |
327 | trigger = 3; | |
328 | ||
329 | if (polarity == 0) /* compatible SCI polarity is low */ | |
330 | polarity = 3; | |
331 | ||
332 | /* Command-line over-ride via acpi_sci= */ | |
5f3b1a8b AS |
333 | if (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) |
334 | trigger = (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) >> 2; | |
1da177e4 | 335 | |
5f3b1a8b AS |
336 | if (acpi_sci_flags & ACPI_MADT_POLARITY_MASK) |
337 | polarity = acpi_sci_flags & ACPI_MADT_POLARITY_MASK; | |
1da177e4 LT |
338 | |
339 | /* | |
4be44fcd | 340 | * mp_config_acpi_legacy_irqs() already setup IRQs < 16 |
1da177e4 LT |
341 | * If GSI is < 16, this will update its flags, |
342 | * else it will create a new mp_irqs[] entry. | |
343 | */ | |
7bdd21ce | 344 | mp_override_legacy_irq(gsi, polarity, trigger, gsi); |
1da177e4 LT |
345 | |
346 | /* | |
347 | * stash over-ride to indicate we've been here | |
cee324b1 | 348 | * and for later update of acpi_gbl_FADT |
1da177e4 | 349 | */ |
7bdd21ce | 350 | acpi_sci_override_gsi = gsi; |
1da177e4 LT |
351 | return; |
352 | } | |
353 | ||
354 | static int __init | |
5f3b1a8b | 355 | acpi_parse_int_src_ovr(struct acpi_subtable_header * header, |
4be44fcd | 356 | const unsigned long end) |
1da177e4 | 357 | { |
5f3b1a8b | 358 | struct acpi_madt_interrupt_override *intsrc = NULL; |
1da177e4 | 359 | |
5f3b1a8b | 360 | intsrc = (struct acpi_madt_interrupt_override *)header; |
1da177e4 LT |
361 | |
362 | if (BAD_MADT_ENTRY(intsrc, end)) | |
363 | return -EINVAL; | |
364 | ||
365 | acpi_table_print_madt_entry(header); | |
366 | ||
5f3b1a8b | 367 | if (intsrc->source_irq == acpi_gbl_FADT.sci_interrupt) { |
7bdd21ce | 368 | acpi_sci_ioapic_setup(intsrc->global_irq, |
5f3b1a8b AS |
369 | intsrc->inti_flags & ACPI_MADT_POLARITY_MASK, |
370 | (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2); | |
1da177e4 LT |
371 | return 0; |
372 | } | |
373 | ||
374 | if (acpi_skip_timer_override && | |
5f3b1a8b | 375 | intsrc->source_irq == 0 && intsrc->global_irq == 2) { |
4be44fcd LB |
376 | printk(PREFIX "BIOS IRQ0 pin2 override ignored.\n"); |
377 | return 0; | |
1da177e4 LT |
378 | } |
379 | ||
5f3b1a8b AS |
380 | mp_override_legacy_irq(intsrc->source_irq, |
381 | intsrc->inti_flags & ACPI_MADT_POLARITY_MASK, | |
382 | (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2, | |
383 | intsrc->global_irq); | |
1da177e4 LT |
384 | |
385 | return 0; | |
386 | } | |
387 | ||
1da177e4 | 388 | static int __init |
5f3b1a8b | 389 | acpi_parse_nmi_src(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 390 | { |
5f3b1a8b | 391 | struct acpi_madt_nmi_source *nmi_src = NULL; |
1da177e4 | 392 | |
5f3b1a8b | 393 | nmi_src = (struct acpi_madt_nmi_source *)header; |
1da177e4 LT |
394 | |
395 | if (BAD_MADT_ENTRY(nmi_src, end)) | |
396 | return -EINVAL; | |
397 | ||
398 | acpi_table_print_madt_entry(header); | |
399 | ||
400 | /* TBD: Support nimsrc entries? */ | |
401 | ||
402 | return 0; | |
403 | } | |
404 | ||
4be44fcd | 405 | #endif /* CONFIG_X86_IO_APIC */ |
1da177e4 | 406 | |
1da177e4 LT |
407 | /* |
408 | * acpi_pic_sci_set_trigger() | |
5f3b1a8b | 409 | * |
1da177e4 LT |
410 | * use ELCR to set PIC-mode trigger type for SCI |
411 | * | |
412 | * If a PIC-mode SCI is not recognized or gives spurious IRQ7's | |
413 | * it may require Edge Trigger -- use "acpi_sci=edge" | |
414 | * | |
415 | * Port 0x4d0-4d1 are ECLR1 and ECLR2, the Edge/Level Control Registers | |
416 | * for the 8259 PIC. bit[n] = 1 means irq[n] is Level, otherwise Edge. | |
27b46d76 SA |
417 | * ECLR1 is IRQs 0-7 (IRQ 0, 1, 2 must be 0) |
418 | * ECLR2 is IRQs 8-15 (IRQ 8, 13 must be 0) | |
1da177e4 LT |
419 | */ |
420 | ||
4be44fcd | 421 | void __init acpi_pic_sci_set_trigger(unsigned int irq, u16 trigger) |
1da177e4 LT |
422 | { |
423 | unsigned int mask = 1 << irq; | |
424 | unsigned int old, new; | |
425 | ||
426 | /* Real old ELCR mask */ | |
427 | old = inb(0x4d0) | (inb(0x4d1) << 8); | |
428 | ||
429 | /* | |
27b46d76 | 430 | * If we use ACPI to set PCI IRQs, then we should clear ELCR |
1da177e4 LT |
431 | * since we will set it correctly as we enable the PCI irq |
432 | * routing. | |
433 | */ | |
434 | new = acpi_noirq ? old : 0; | |
435 | ||
436 | /* | |
437 | * Update SCI information in the ELCR, it isn't in the PCI | |
438 | * routing tables.. | |
439 | */ | |
440 | switch (trigger) { | |
4be44fcd | 441 | case 1: /* Edge - clear */ |
1da177e4 LT |
442 | new &= ~mask; |
443 | break; | |
4be44fcd | 444 | case 3: /* Level - set */ |
1da177e4 LT |
445 | new |= mask; |
446 | break; | |
447 | } | |
448 | ||
449 | if (old == new) | |
450 | return; | |
451 | ||
452 | printk(PREFIX "setting ELCR to %04x (from %04x)\n", new, old); | |
453 | outb(new, 0x4d0); | |
454 | outb(new >> 8, 0x4d1); | |
455 | } | |
456 | ||
1da177e4 LT |
457 | int acpi_gsi_to_irq(u32 gsi, unsigned int *irq) |
458 | { | |
f023d764 | 459 | *irq = gsi; |
1da177e4 LT |
460 | return 0; |
461 | } | |
462 | ||
1f3a6a15 KK |
463 | /* |
464 | * success: return IRQ number (>=0) | |
465 | * failure: return < 0 | |
466 | */ | |
cb654695 | 467 | int acpi_register_gsi(u32 gsi, int triggering, int polarity) |
1da177e4 LT |
468 | { |
469 | unsigned int irq; | |
470 | unsigned int plat_gsi = gsi; | |
471 | ||
472 | #ifdef CONFIG_PCI | |
473 | /* | |
474 | * Make sure all (legacy) PCI IRQs are set as level-triggered. | |
475 | */ | |
476 | if (acpi_irq_model == ACPI_IRQ_MODEL_PIC) { | |
477 | extern void eisa_set_level_irq(unsigned int irq); | |
478 | ||
cb654695 | 479 | if (triggering == ACPI_LEVEL_SENSITIVE) |
4be44fcd | 480 | eisa_set_level_irq(gsi); |
1da177e4 LT |
481 | } |
482 | #endif | |
483 | ||
484 | #ifdef CONFIG_X86_IO_APIC | |
485 | if (acpi_irq_model == ACPI_IRQ_MODEL_IOAPIC) { | |
cb654695 | 486 | plat_gsi = mp_register_gsi(gsi, triggering, polarity); |
1da177e4 LT |
487 | } |
488 | #endif | |
489 | acpi_gsi_to_irq(plat_gsi, &irq); | |
490 | return irq; | |
491 | } | |
4be44fcd | 492 | |
1da177e4 LT |
493 | EXPORT_SYMBOL(acpi_register_gsi); |
494 | ||
495 | /* | |
496 | * ACPI based hotplug support for CPU | |
497 | */ | |
498 | #ifdef CONFIG_ACPI_HOTPLUG_CPU | |
4be44fcd | 499 | int acpi_map_lsapic(acpi_handle handle, int *pcpu) |
1da177e4 | 500 | { |
73fea175 AR |
501 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
502 | union acpi_object *obj; | |
5f3b1a8b | 503 | struct acpi_madt_local_apic *lapic; |
73fea175 AR |
504 | cpumask_t tmp_map, new_map; |
505 | u8 physid; | |
506 | int cpu; | |
507 | ||
508 | if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer))) | |
509 | return -EINVAL; | |
510 | ||
511 | if (!buffer.length || !buffer.pointer) | |
512 | return -EINVAL; | |
513 | ||
514 | obj = buffer.pointer; | |
515 | if (obj->type != ACPI_TYPE_BUFFER || | |
516 | obj->buffer.length < sizeof(*lapic)) { | |
517 | kfree(buffer.pointer); | |
518 | return -EINVAL; | |
519 | } | |
520 | ||
5f3b1a8b | 521 | lapic = (struct acpi_madt_local_apic *)obj->buffer.pointer; |
73fea175 | 522 | |
5f3b1a8b AS |
523 | if (lapic->header.type != ACPI_MADT_TYPE_LOCAL_APIC || |
524 | !(lapic->lapic_flags & ACPI_MADT_ENABLED)) { | |
73fea175 AR |
525 | kfree(buffer.pointer); |
526 | return -EINVAL; | |
527 | } | |
528 | ||
529 | physid = lapic->id; | |
530 | ||
531 | kfree(buffer.pointer); | |
532 | buffer.length = ACPI_ALLOCATE_BUFFER; | |
533 | buffer.pointer = NULL; | |
534 | ||
535 | tmp_map = cpu_present_map; | |
5f3b1a8b | 536 | mp_register_lapic(physid, lapic->lapic_flags & ACPI_MADT_ENABLED); |
73fea175 AR |
537 | |
538 | /* | |
539 | * If mp_register_lapic successfully generates a new logical cpu | |
540 | * number, then the following will get us exactly what was mapped | |
541 | */ | |
542 | cpus_andnot(new_map, cpu_present_map, tmp_map); | |
543 | if (cpus_empty(new_map)) { | |
544 | printk ("Unable to map lapic to logical cpu number\n"); | |
545 | return -EINVAL; | |
546 | } | |
547 | ||
548 | cpu = first_cpu(new_map); | |
549 | ||
550 | *pcpu = cpu; | |
551 | return 0; | |
1da177e4 | 552 | } |
1da177e4 | 553 | |
4be44fcd | 554 | EXPORT_SYMBOL(acpi_map_lsapic); |
1da177e4 | 555 | |
4be44fcd | 556 | int acpi_unmap_lsapic(int cpu) |
1da177e4 | 557 | { |
71fff5e6 | 558 | per_cpu(x86_cpu_to_apicid, cpu) = -1; |
73fea175 AR |
559 | cpu_clear(cpu, cpu_present_map); |
560 | num_processors--; | |
561 | ||
562 | return (0); | |
1da177e4 | 563 | } |
4be44fcd | 564 | |
1da177e4 | 565 | EXPORT_SYMBOL(acpi_unmap_lsapic); |
4be44fcd | 566 | #endif /* CONFIG_ACPI_HOTPLUG_CPU */ |
1da177e4 | 567 | |
4be44fcd | 568 | int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base) |
b1bb248a KK |
569 | { |
570 | /* TBD */ | |
571 | return -EINVAL; | |
572 | } | |
4be44fcd | 573 | |
b1bb248a KK |
574 | EXPORT_SYMBOL(acpi_register_ioapic); |
575 | ||
4be44fcd | 576 | int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base) |
b1bb248a KK |
577 | { |
578 | /* TBD */ | |
579 | return -EINVAL; | |
580 | } | |
4be44fcd | 581 | |
b1bb248a KK |
582 | EXPORT_SYMBOL(acpi_unregister_ioapic); |
583 | ||
1da177e4 | 584 | static unsigned long __init |
4be44fcd | 585 | acpi_scan_rsdp(unsigned long start, unsigned long length) |
1da177e4 | 586 | { |
4be44fcd LB |
587 | unsigned long offset = 0; |
588 | unsigned long sig_len = sizeof("RSD PTR ") - 1; | |
1da177e4 LT |
589 | |
590 | /* | |
591 | * Scan all 16-byte boundaries of the physical memory region for the | |
592 | * RSDP signature. | |
593 | */ | |
594 | for (offset = 0; offset < length; offset += 16) { | |
f6c2e333 | 595 | if (strncmp((char *)(phys_to_virt(start) + offset), "RSD PTR ", sig_len)) |
1da177e4 LT |
596 | continue; |
597 | return (start + offset); | |
598 | } | |
599 | ||
600 | return 0; | |
601 | } | |
602 | ||
5f3b1a8b | 603 | static int __init acpi_parse_sbf(struct acpi_table_header *table) |
1da177e4 | 604 | { |
5f3b1a8b | 605 | struct acpi_table_boot *sb; |
1da177e4 | 606 | |
5f3b1a8b | 607 | sb = (struct acpi_table_boot *)table; |
1da177e4 LT |
608 | if (!sb) { |
609 | printk(KERN_WARNING PREFIX "Unable to map SBF\n"); | |
610 | return -ENODEV; | |
611 | } | |
612 | ||
5f3b1a8b | 613 | sbf_port = sb->cmos_index; /* Save CMOS port */ |
1da177e4 LT |
614 | |
615 | return 0; | |
616 | } | |
617 | ||
1da177e4 | 618 | #ifdef CONFIG_HPET_TIMER |
2d0c87c3 | 619 | #include <asm/hpet.h> |
1da177e4 | 620 | |
a1dfd851 AD |
621 | static struct __initdata resource *hpet_res; |
622 | ||
5f3b1a8b | 623 | static int __init acpi_parse_hpet(struct acpi_table_header *table) |
1da177e4 LT |
624 | { |
625 | struct acpi_table_hpet *hpet_tbl; | |
626 | ||
5f3b1a8b | 627 | hpet_tbl = (struct acpi_table_hpet *)table; |
1da177e4 LT |
628 | if (!hpet_tbl) { |
629 | printk(KERN_WARNING PREFIX "Unable to map HPET\n"); | |
630 | return -ENODEV; | |
631 | } | |
632 | ||
ad363f80 | 633 | if (hpet_tbl->address.space_id != ACPI_SPACE_MEM) { |
1da177e4 LT |
634 | printk(KERN_WARNING PREFIX "HPET timers must be located in " |
635 | "memory.\n"); | |
636 | return -1; | |
637 | } | |
f0f4c343 | 638 | |
2d0c87c3 | 639 | hpet_address = hpet_tbl->address.address; |
f4df73c2 TG |
640 | |
641 | /* | |
642 | * Some broken BIOSes advertise HPET at 0x0. We really do not | |
643 | * want to allocate a resource there. | |
644 | */ | |
645 | if (!hpet_address) { | |
646 | printk(KERN_WARNING PREFIX | |
647 | "HPET id: %#x base: %#lx is invalid\n", | |
648 | hpet_tbl->id, hpet_address); | |
649 | return 0; | |
650 | } | |
651 | #ifdef CONFIG_X86_64 | |
652 | /* | |
653 | * Some even more broken BIOSes advertise HPET at | |
654 | * 0xfed0000000000000 instead of 0xfed00000. Fix it up and add | |
655 | * some noise: | |
656 | */ | |
657 | if (hpet_address == 0xfed0000000000000UL) { | |
658 | if (!hpet_force_user) { | |
659 | printk(KERN_WARNING PREFIX "HPET id: %#x " | |
660 | "base: 0xfed0000000000000 is bogus\n " | |
661 | "try hpet=force on the kernel command line to " | |
662 | "fix it up to 0xfed00000.\n", hpet_tbl->id); | |
663 | hpet_address = 0; | |
664 | return 0; | |
665 | } | |
666 | printk(KERN_WARNING PREFIX | |
667 | "HPET id: %#x base: 0xfed0000000000000 fixed up " | |
668 | "to 0xfed00000.\n", hpet_tbl->id); | |
669 | hpet_address >>= 32; | |
670 | } | |
671 | #endif | |
4be44fcd | 672 | printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n", |
2d0c87c3 | 673 | hpet_tbl->id, hpet_address); |
1da177e4 | 674 | |
a1dfd851 AD |
675 | /* |
676 | * Allocate and initialize the HPET firmware resource for adding into | |
677 | * the resource tree during the lateinit timeframe. | |
678 | */ | |
679 | #define HPET_RESOURCE_NAME_SIZE 9 | |
680 | hpet_res = alloc_bootmem(sizeof(*hpet_res) + HPET_RESOURCE_NAME_SIZE); | |
681 | ||
682 | if (!hpet_res) | |
683 | return 0; | |
684 | ||
685 | memset(hpet_res, 0, sizeof(*hpet_res)); | |
686 | hpet_res->name = (void *)&hpet_res[1]; | |
687 | hpet_res->flags = IORESOURCE_MEM; | |
688 | snprintf((char *)hpet_res->name, HPET_RESOURCE_NAME_SIZE, "HPET %u", | |
689 | hpet_tbl->sequence); | |
690 | ||
691 | hpet_res->start = hpet_address; | |
692 | hpet_res->end = hpet_address + (1 * 1024) - 1; | |
693 | ||
1da177e4 LT |
694 | return 0; |
695 | } | |
a1dfd851 AD |
696 | |
697 | /* | |
698 | * hpet_insert_resource inserts the HPET resources used into the resource | |
699 | * tree. | |
700 | */ | |
701 | static __init int hpet_insert_resource(void) | |
702 | { | |
703 | if (!hpet_res) | |
704 | return 1; | |
705 | ||
706 | return insert_resource(&iomem_resource, hpet_res); | |
707 | } | |
708 | ||
709 | late_initcall(hpet_insert_resource); | |
710 | ||
1da177e4 LT |
711 | #else |
712 | #define acpi_parse_hpet NULL | |
713 | #endif | |
714 | ||
5f3b1a8b | 715 | static int __init acpi_parse_fadt(struct acpi_table_header *table) |
1da177e4 | 716 | { |
90660ec3 | 717 | |
1da177e4 LT |
718 | #ifdef CONFIG_X86_PM_TIMER |
719 | /* detect the location of the ACPI PM Timer */ | |
5f3b1a8b | 720 | if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID) { |
1da177e4 | 721 | /* FADT rev. 2 */ |
5f3b1a8b | 722 | if (acpi_gbl_FADT.xpm_timer_block.space_id != |
4be44fcd | 723 | ACPI_ADR_SPACE_SYSTEM_IO) |
1da177e4 LT |
724 | return 0; |
725 | ||
5f3b1a8b | 726 | pmtmr_ioport = acpi_gbl_FADT.xpm_timer_block.address; |
e6e87b4b DSL |
727 | /* |
728 | * "X" fields are optional extensions to the original V1.0 | |
729 | * fields, so we must selectively expand V1.0 fields if the | |
730 | * corresponding X field is zero. | |
731 | */ | |
732 | if (!pmtmr_ioport) | |
5f3b1a8b | 733 | pmtmr_ioport = acpi_gbl_FADT.pm_timer_block; |
1da177e4 LT |
734 | } else { |
735 | /* FADT rev. 1 */ | |
5f3b1a8b | 736 | pmtmr_ioport = acpi_gbl_FADT.pm_timer_block; |
1da177e4 LT |
737 | } |
738 | if (pmtmr_ioport) | |
4be44fcd LB |
739 | printk(KERN_INFO PREFIX "PM-Timer IO Port: %#x\n", |
740 | pmtmr_ioport); | |
1da177e4 LT |
741 | #endif |
742 | return 0; | |
743 | } | |
744 | ||
4be44fcd | 745 | unsigned long __init acpi_find_rsdp(void) |
1da177e4 | 746 | { |
4be44fcd | 747 | unsigned long rsdp_phys = 0; |
1da177e4 LT |
748 | |
749 | if (efi_enabled) { | |
b2c99e3c BH |
750 | if (efi.acpi20 != EFI_INVALID_TABLE_ADDR) |
751 | return efi.acpi20; | |
752 | else if (efi.acpi != EFI_INVALID_TABLE_ADDR) | |
753 | return efi.acpi; | |
1da177e4 LT |
754 | } |
755 | /* | |
756 | * Scan memory looking for the RSDP signature. First search EBDA (low | |
757 | * memory) paragraphs and then search upper memory (E0000-FFFFF). | |
758 | */ | |
4be44fcd | 759 | rsdp_phys = acpi_scan_rsdp(0, 0x400); |
1da177e4 | 760 | if (!rsdp_phys) |
4be44fcd | 761 | rsdp_phys = acpi_scan_rsdp(0xE0000, 0x20000); |
1da177e4 LT |
762 | |
763 | return rsdp_phys; | |
764 | } | |
765 | ||
766 | #ifdef CONFIG_X86_LOCAL_APIC | |
767 | /* | |
768 | * Parse LAPIC entries in MADT | |
769 | * returns 0 on success, < 0 on error | |
770 | */ | |
4be44fcd | 771 | static int __init acpi_parse_madt_lapic_entries(void) |
1da177e4 LT |
772 | { |
773 | int count; | |
774 | ||
0fcd2709 AK |
775 | if (!cpu_has_apic) |
776 | return -ENODEV; | |
777 | ||
5f3b1a8b | 778 | /* |
1da177e4 LT |
779 | * Note that the LAPIC address is obtained from the MADT (32-bit value) |
780 | * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value). | |
781 | */ | |
782 | ||
4be44fcd | 783 | count = |
5f3b1a8b | 784 | acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE, |
4be44fcd | 785 | acpi_parse_lapic_addr_ovr, 0); |
1da177e4 | 786 | if (count < 0) { |
4be44fcd LB |
787 | printk(KERN_ERR PREFIX |
788 | "Error parsing LAPIC address override entry\n"); | |
1da177e4 LT |
789 | return count; |
790 | } | |
791 | ||
792 | mp_register_lapic_address(acpi_lapic_addr); | |
793 | ||
5f3b1a8b | 794 | count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC, acpi_parse_lapic, |
4be44fcd LB |
795 | MAX_APICS); |
796 | if (!count) { | |
1da177e4 LT |
797 | printk(KERN_ERR PREFIX "No LAPIC entries present\n"); |
798 | /* TBD: Cleanup to allow fallback to MPS */ | |
799 | return -ENODEV; | |
4be44fcd | 800 | } else if (count < 0) { |
1da177e4 LT |
801 | printk(KERN_ERR PREFIX "Error parsing LAPIC entry\n"); |
802 | /* TBD: Cleanup to allow fallback to MPS */ | |
803 | return count; | |
804 | } | |
805 | ||
4be44fcd | 806 | count = |
5f3b1a8b | 807 | acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI, acpi_parse_lapic_nmi, 0); |
1da177e4 LT |
808 | if (count < 0) { |
809 | printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n"); | |
810 | /* TBD: Cleanup to allow fallback to MPS */ | |
811 | return count; | |
812 | } | |
813 | return 0; | |
814 | } | |
4be44fcd | 815 | #endif /* CONFIG_X86_LOCAL_APIC */ |
1da177e4 | 816 | |
8466361a | 817 | #ifdef CONFIG_X86_IO_APIC |
1da177e4 LT |
818 | /* |
819 | * Parse IOAPIC related entries in MADT | |
820 | * returns 0 on success, < 0 on error | |
821 | */ | |
4be44fcd | 822 | static int __init acpi_parse_madt_ioapic_entries(void) |
1da177e4 LT |
823 | { |
824 | int count; | |
825 | ||
826 | /* | |
827 | * ACPI interpreter is required to complete interrupt setup, | |
828 | * so if it is off, don't enumerate the io-apics with ACPI. | |
829 | * If MPS is present, it will handle them, | |
830 | * otherwise the system will stay in PIC mode | |
831 | */ | |
832 | if (acpi_disabled || acpi_noirq) { | |
833 | return -ENODEV; | |
4be44fcd | 834 | } |
1da177e4 | 835 | |
5f3b1a8b | 836 | if (!cpu_has_apic) |
d3b6a349 AK |
837 | return -ENODEV; |
838 | ||
1da177e4 | 839 | /* |
4be44fcd | 840 | * if "noapic" boot option, don't look for IO-APICs |
1da177e4 LT |
841 | */ |
842 | if (skip_ioapic_setup) { | |
843 | printk(KERN_INFO PREFIX "Skipping IOAPIC probe " | |
4be44fcd | 844 | "due to 'noapic' option.\n"); |
1da177e4 LT |
845 | return -ENODEV; |
846 | } | |
847 | ||
4be44fcd | 848 | count = |
5f3b1a8b | 849 | acpi_table_parse_madt(ACPI_MADT_TYPE_IO_APIC, acpi_parse_ioapic, |
4be44fcd | 850 | MAX_IO_APICS); |
1da177e4 LT |
851 | if (!count) { |
852 | printk(KERN_ERR PREFIX "No IOAPIC entries present\n"); | |
853 | return -ENODEV; | |
4be44fcd | 854 | } else if (count < 0) { |
1da177e4 LT |
855 | printk(KERN_ERR PREFIX "Error parsing IOAPIC entry\n"); |
856 | return count; | |
857 | } | |
858 | ||
4be44fcd | 859 | count = |
5f3b1a8b | 860 | acpi_table_parse_madt(ACPI_MADT_TYPE_INTERRUPT_OVERRIDE, acpi_parse_int_src_ovr, |
4be44fcd | 861 | NR_IRQ_VECTORS); |
1da177e4 | 862 | if (count < 0) { |
4be44fcd LB |
863 | printk(KERN_ERR PREFIX |
864 | "Error parsing interrupt source overrides entry\n"); | |
1da177e4 LT |
865 | /* TBD: Cleanup to allow fallback to MPS */ |
866 | return count; | |
867 | } | |
868 | ||
869 | /* | |
870 | * If BIOS did not supply an INT_SRC_OVR for the SCI | |
871 | * pretend we got one so we can set the SCI flags. | |
872 | */ | |
873 | if (!acpi_sci_override_gsi) | |
cee324b1 | 874 | acpi_sci_ioapic_setup(acpi_gbl_FADT.sci_interrupt, 0, 0); |
1da177e4 LT |
875 | |
876 | /* Fill in identity legacy mapings where no override */ | |
877 | mp_config_acpi_legacy_irqs(); | |
878 | ||
4be44fcd | 879 | count = |
5f3b1a8b | 880 | acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE, acpi_parse_nmi_src, |
4be44fcd | 881 | NR_IRQ_VECTORS); |
1da177e4 LT |
882 | if (count < 0) { |
883 | printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n"); | |
884 | /* TBD: Cleanup to allow fallback to MPS */ | |
885 | return count; | |
886 | } | |
887 | ||
888 | return 0; | |
889 | } | |
890 | #else | |
891 | static inline int acpi_parse_madt_ioapic_entries(void) | |
892 | { | |
893 | return -1; | |
894 | } | |
8466361a | 895 | #endif /* !CONFIG_X86_IO_APIC */ |
1da177e4 | 896 | |
4be44fcd | 897 | static void __init acpi_process_madt(void) |
1da177e4 LT |
898 | { |
899 | #ifdef CONFIG_X86_LOCAL_APIC | |
7f8f97c3 | 900 | int error; |
1da177e4 | 901 | |
7f8f97c3 | 902 | if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) { |
1da177e4 LT |
903 | |
904 | /* | |
905 | * Parse MADT LAPIC entries | |
906 | */ | |
907 | error = acpi_parse_madt_lapic_entries(); | |
908 | if (!error) { | |
909 | acpi_lapic = 1; | |
910 | ||
911a62d4 VP |
911 | #ifdef CONFIG_X86_GENERICARCH |
912 | generic_bigsmp_probe(); | |
913 | #endif | |
1da177e4 LT |
914 | /* |
915 | * Parse MADT IO-APIC entries | |
916 | */ | |
917 | error = acpi_parse_madt_ioapic_entries(); | |
918 | if (!error) { | |
919 | acpi_irq_model = ACPI_IRQ_MODEL_IOAPIC; | |
920 | acpi_irq_balance_set(NULL); | |
921 | acpi_ioapic = 1; | |
922 | ||
923 | smp_found_config = 1; | |
3c43f039 | 924 | setup_apic_routing(); |
1da177e4 LT |
925 | } |
926 | } | |
927 | if (error == -EINVAL) { | |
928 | /* | |
929 | * Dell Precision Workstation 410, 610 come here. | |
930 | */ | |
4be44fcd LB |
931 | printk(KERN_ERR PREFIX |
932 | "Invalid BIOS MADT, disabling ACPI\n"); | |
1da177e4 LT |
933 | disable_acpi(); |
934 | } | |
935 | } | |
936 | #endif | |
937 | return; | |
938 | } | |
939 | ||
aea00143 AP |
940 | #ifdef __i386__ |
941 | ||
1855256c | 942 | static int __init disable_acpi_irq(const struct dmi_system_id *d) |
aea00143 AP |
943 | { |
944 | if (!acpi_force) { | |
945 | printk(KERN_NOTICE "%s detected: force use of acpi=noirq\n", | |
946 | d->ident); | |
947 | acpi_noirq_set(); | |
948 | } | |
949 | return 0; | |
950 | } | |
951 | ||
1855256c | 952 | static int __init disable_acpi_pci(const struct dmi_system_id *d) |
aea00143 AP |
953 | { |
954 | if (!acpi_force) { | |
955 | printk(KERN_NOTICE "%s detected: force use of pci=noacpi\n", | |
956 | d->ident); | |
957 | acpi_disable_pci(); | |
958 | } | |
959 | return 0; | |
960 | } | |
aea00143 | 961 | |
1855256c | 962 | static int __init dmi_disable_acpi(const struct dmi_system_id *d) |
aea00143 AP |
963 | { |
964 | if (!acpi_force) { | |
4be44fcd | 965 | printk(KERN_NOTICE "%s detected: acpi off\n", d->ident); |
aea00143 AP |
966 | disable_acpi(); |
967 | } else { | |
968 | printk(KERN_NOTICE | |
969 | "Warning: DMI blacklist says broken, but acpi forced\n"); | |
970 | } | |
971 | return 0; | |
972 | } | |
973 | ||
974 | /* | |
975 | * Limit ACPI to CPU enumeration for HT | |
976 | */ | |
1855256c | 977 | static int __init force_acpi_ht(const struct dmi_system_id *d) |
aea00143 AP |
978 | { |
979 | if (!acpi_force) { | |
4be44fcd LB |
980 | printk(KERN_NOTICE "%s detected: force use of acpi=ht\n", |
981 | d->ident); | |
aea00143 AP |
982 | disable_acpi(); |
983 | acpi_ht = 1; | |
984 | } else { | |
985 | printk(KERN_NOTICE | |
986 | "Warning: acpi=force overrules DMI blacklist: acpi=ht\n"); | |
987 | } | |
988 | return 0; | |
989 | } | |
990 | ||
991 | /* | |
992 | * If your system is blacklisted here, but you find that acpi=force | |
993 | * works for you, please contact acpi-devel@sourceforge.net | |
994 | */ | |
995 | static struct dmi_system_id __initdata acpi_dmi_table[] = { | |
996 | /* | |
997 | * Boxes that need ACPI disabled | |
998 | */ | |
999 | { | |
4be44fcd LB |
1000 | .callback = dmi_disable_acpi, |
1001 | .ident = "IBM Thinkpad", | |
1002 | .matches = { | |
1003 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), | |
1004 | DMI_MATCH(DMI_BOARD_NAME, "2629H1G"), | |
1005 | }, | |
1006 | }, | |
aea00143 AP |
1007 | |
1008 | /* | |
1009 | * Boxes that need acpi=ht | |
1010 | */ | |
1011 | { | |
4be44fcd LB |
1012 | .callback = force_acpi_ht, |
1013 | .ident = "FSC Primergy T850", | |
1014 | .matches = { | |
1015 | DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), | |
1016 | DMI_MATCH(DMI_PRODUCT_NAME, "PRIMERGY T850"), | |
1017 | }, | |
1018 | }, | |
aea00143 | 1019 | { |
4be44fcd LB |
1020 | .callback = force_acpi_ht, |
1021 | .ident = "HP VISUALIZE NT Workstation", | |
1022 | .matches = { | |
1023 | DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"), | |
1024 | DMI_MATCH(DMI_PRODUCT_NAME, "HP VISUALIZE NT Workstation"), | |
1025 | }, | |
1026 | }, | |
aea00143 | 1027 | { |
4be44fcd LB |
1028 | .callback = force_acpi_ht, |
1029 | .ident = "Compaq Workstation W8000", | |
1030 | .matches = { | |
1031 | DMI_MATCH(DMI_SYS_VENDOR, "Compaq"), | |
1032 | DMI_MATCH(DMI_PRODUCT_NAME, "Workstation W8000"), | |
1033 | }, | |
1034 | }, | |
aea00143 | 1035 | { |
4be44fcd LB |
1036 | .callback = force_acpi_ht, |
1037 | .ident = "ASUS P4B266", | |
1038 | .matches = { | |
1039 | DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), | |
1040 | DMI_MATCH(DMI_BOARD_NAME, "P4B266"), | |
1041 | }, | |
1042 | }, | |
aea00143 | 1043 | { |
4be44fcd LB |
1044 | .callback = force_acpi_ht, |
1045 | .ident = "ASUS P2B-DS", | |
1046 | .matches = { | |
1047 | DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), | |
1048 | DMI_MATCH(DMI_BOARD_NAME, "P2B-DS"), | |
1049 | }, | |
1050 | }, | |
aea00143 | 1051 | { |
4be44fcd LB |
1052 | .callback = force_acpi_ht, |
1053 | .ident = "ASUS CUR-DLS", | |
1054 | .matches = { | |
1055 | DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), | |
1056 | DMI_MATCH(DMI_BOARD_NAME, "CUR-DLS"), | |
1057 | }, | |
1058 | }, | |
aea00143 | 1059 | { |
4be44fcd LB |
1060 | .callback = force_acpi_ht, |
1061 | .ident = "ABIT i440BX-W83977", | |
1062 | .matches = { | |
1063 | DMI_MATCH(DMI_BOARD_VENDOR, "ABIT <http://www.abit.com>"), | |
1064 | DMI_MATCH(DMI_BOARD_NAME, "i440BX-W83977 (BP6)"), | |
1065 | }, | |
1066 | }, | |
aea00143 | 1067 | { |
4be44fcd LB |
1068 | .callback = force_acpi_ht, |
1069 | .ident = "IBM Bladecenter", | |
1070 | .matches = { | |
1071 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), | |
1072 | DMI_MATCH(DMI_BOARD_NAME, "IBM eServer BladeCenter HS20"), | |
1073 | }, | |
1074 | }, | |
aea00143 | 1075 | { |
4be44fcd LB |
1076 | .callback = force_acpi_ht, |
1077 | .ident = "IBM eServer xSeries 360", | |
1078 | .matches = { | |
1079 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), | |
1080 | DMI_MATCH(DMI_BOARD_NAME, "eServer xSeries 360"), | |
1081 | }, | |
1082 | }, | |
aea00143 | 1083 | { |
4be44fcd LB |
1084 | .callback = force_acpi_ht, |
1085 | .ident = "IBM eserver xSeries 330", | |
1086 | .matches = { | |
1087 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), | |
1088 | DMI_MATCH(DMI_BOARD_NAME, "eserver xSeries 330"), | |
1089 | }, | |
1090 | }, | |
aea00143 | 1091 | { |
4be44fcd LB |
1092 | .callback = force_acpi_ht, |
1093 | .ident = "IBM eserver xSeries 440", | |
1094 | .matches = { | |
1095 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), | |
1096 | DMI_MATCH(DMI_PRODUCT_NAME, "eserver xSeries 440"), | |
1097 | }, | |
1098 | }, | |
aea00143 | 1099 | |
aea00143 AP |
1100 | /* |
1101 | * Boxes that need ACPI PCI IRQ routing disabled | |
1102 | */ | |
1103 | { | |
4be44fcd LB |
1104 | .callback = disable_acpi_irq, |
1105 | .ident = "ASUS A7V", | |
1106 | .matches = { | |
1107 | DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC"), | |
1108 | DMI_MATCH(DMI_BOARD_NAME, "<A7V>"), | |
1109 | /* newer BIOS, Revision 1011, does work */ | |
1110 | DMI_MATCH(DMI_BIOS_VERSION, | |
1111 | "ASUS A7V ACPI BIOS Revision 1007"), | |
1112 | }, | |
1113 | }, | |
74586fca LB |
1114 | { |
1115 | /* | |
1116 | * Latest BIOS for IBM 600E (1.16) has bad pcinum | |
1117 | * for LPC bridge, which is needed for the PCI | |
1118 | * interrupt links to work. DSDT fix is in bug 5966. | |
1119 | * 2645, 2646 model numbers are shared with 600/600E/600X | |
1120 | */ | |
1121 | .callback = disable_acpi_irq, | |
1122 | .ident = "IBM Thinkpad 600 Series 2645", | |
1123 | .matches = { | |
1124 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), | |
1125 | DMI_MATCH(DMI_BOARD_NAME, "2645"), | |
1126 | }, | |
1127 | }, | |
1128 | { | |
1129 | .callback = disable_acpi_irq, | |
1130 | .ident = "IBM Thinkpad 600 Series 2646", | |
1131 | .matches = { | |
1132 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), | |
1133 | DMI_MATCH(DMI_BOARD_NAME, "2646"), | |
1134 | }, | |
1135 | }, | |
aea00143 AP |
1136 | /* |
1137 | * Boxes that need ACPI PCI IRQ routing and PCI scan disabled | |
1138 | */ | |
4be44fcd LB |
1139 | { /* _BBN 0 bug */ |
1140 | .callback = disable_acpi_pci, | |
1141 | .ident = "ASUS PR-DLS", | |
1142 | .matches = { | |
1143 | DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), | |
1144 | DMI_MATCH(DMI_BOARD_NAME, "PR-DLS"), | |
1145 | DMI_MATCH(DMI_BIOS_VERSION, | |
1146 | "ASUS PR-DLS ACPI BIOS Revision 1010"), | |
1147 | DMI_MATCH(DMI_BIOS_DATE, "03/21/2003") | |
1148 | }, | |
1149 | }, | |
aea00143 | 1150 | { |
4be44fcd LB |
1151 | .callback = disable_acpi_pci, |
1152 | .ident = "Acer TravelMate 36x Laptop", | |
1153 | .matches = { | |
1154 | DMI_MATCH(DMI_SYS_VENDOR, "Acer"), | |
1155 | DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 360"), | |
1156 | }, | |
1157 | }, | |
4be44fcd | 1158 | {} |
aea00143 AP |
1159 | }; |
1160 | ||
4be44fcd | 1161 | #endif /* __i386__ */ |
aea00143 | 1162 | |
1da177e4 LT |
1163 | /* |
1164 | * acpi_boot_table_init() and acpi_boot_init() | |
1165 | * called from setup_arch(), always. | |
1166 | * 1. checksums all tables | |
1167 | * 2. enumerates lapics | |
1168 | * 3. enumerates io-apics | |
1169 | * | |
1170 | * acpi_table_init() is separate to allow reading SRAT without | |
1171 | * other side effects. | |
1172 | * | |
1173 | * side effects of acpi_boot_init: | |
1174 | * acpi_lapic = 1 if LAPIC found | |
1175 | * acpi_ioapic = 1 if IOAPIC found | |
1176 | * if (acpi_lapic && acpi_ioapic) smp_found_config = 1; | |
1177 | * if acpi_blacklisted() acpi_disabled = 1; | |
1178 | * acpi_irq_model=... | |
1179 | * ... | |
1180 | * | |
1181 | * return value: (currently ignored) | |
1182 | * 0: success | |
1183 | * !0: failure | |
1184 | */ | |
1185 | ||
4be44fcd | 1186 | int __init acpi_boot_table_init(void) |
1da177e4 LT |
1187 | { |
1188 | int error; | |
1189 | ||
aea00143 AP |
1190 | #ifdef __i386__ |
1191 | dmi_check_system(acpi_dmi_table); | |
1192 | #endif | |
1193 | ||
1da177e4 LT |
1194 | /* |
1195 | * If acpi_disabled, bail out | |
1196 | * One exception: acpi=ht continues far enough to enumerate LAPICs | |
1197 | */ | |
1198 | if (acpi_disabled && !acpi_ht) | |
4be44fcd | 1199 | return 1; |
1da177e4 | 1200 | |
5f3b1a8b | 1201 | /* |
1da177e4 LT |
1202 | * Initialize the ACPI boot-time table parser. |
1203 | */ | |
1204 | error = acpi_table_init(); | |
1205 | if (error) { | |
1206 | disable_acpi(); | |
1207 | return error; | |
1208 | } | |
1da177e4 | 1209 | |
5f3b1a8b | 1210 | acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf); |
1da177e4 LT |
1211 | |
1212 | /* | |
1213 | * blacklist may disable ACPI entirely | |
1214 | */ | |
1215 | error = acpi_blacklisted(); | |
1216 | if (error) { | |
1da177e4 LT |
1217 | if (acpi_force) { |
1218 | printk(KERN_WARNING PREFIX "acpi=force override\n"); | |
1219 | } else { | |
1220 | printk(KERN_WARNING PREFIX "Disabling ACPI support\n"); | |
1221 | disable_acpi(); | |
1222 | return error; | |
1223 | } | |
1224 | } | |
1225 | ||
1226 | return 0; | |
1227 | } | |
1228 | ||
1da177e4 LT |
1229 | int __init acpi_boot_init(void) |
1230 | { | |
1231 | /* | |
1232 | * If acpi_disabled, bail out | |
1233 | * One exception: acpi=ht continues far enough to enumerate LAPICs | |
1234 | */ | |
1235 | if (acpi_disabled && !acpi_ht) | |
4be44fcd | 1236 | return 1; |
1da177e4 | 1237 | |
5f3b1a8b | 1238 | acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf); |
1da177e4 LT |
1239 | |
1240 | /* | |
1241 | * set sci_int and PM timer address | |
1242 | */ | |
ceb6c468 | 1243 | acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt); |
1da177e4 LT |
1244 | |
1245 | /* | |
1246 | * Process the Multiple APIC Description Table (MADT), if present | |
1247 | */ | |
1248 | acpi_process_madt(); | |
1249 | ||
5f3b1a8b | 1250 | acpi_table_parse(ACPI_SIG_HPET, acpi_parse_hpet); |
1da177e4 LT |
1251 | |
1252 | return 0; | |
1253 | } | |
1a3f239d RR |
1254 | |
1255 | static int __init parse_acpi(char *arg) | |
1256 | { | |
1257 | if (!arg) | |
1258 | return -EINVAL; | |
1259 | ||
1260 | /* "acpi=off" disables both ACPI table parsing and interpreter */ | |
1261 | if (strcmp(arg, "off") == 0) { | |
1262 | disable_acpi(); | |
1263 | } | |
1264 | /* acpi=force to over-ride black-list */ | |
1265 | else if (strcmp(arg, "force") == 0) { | |
1266 | acpi_force = 1; | |
1267 | acpi_ht = 1; | |
1268 | acpi_disabled = 0; | |
1269 | } | |
1270 | /* acpi=strict disables out-of-spec workarounds */ | |
1271 | else if (strcmp(arg, "strict") == 0) { | |
1272 | acpi_strict = 1; | |
1273 | } | |
1274 | /* Limit ACPI just to boot-time to enable HT */ | |
1275 | else if (strcmp(arg, "ht") == 0) { | |
1276 | if (!acpi_force) | |
1277 | disable_acpi(); | |
1278 | acpi_ht = 1; | |
1279 | } | |
1280 | /* "acpi=noirq" disables ACPI interrupt routing */ | |
1281 | else if (strcmp(arg, "noirq") == 0) { | |
1282 | acpi_noirq_set(); | |
1283 | } else { | |
1284 | /* Core will printk when we return error. */ | |
1285 | return -EINVAL; | |
1286 | } | |
1287 | return 0; | |
1288 | } | |
1289 | early_param("acpi", parse_acpi); | |
1290 | ||
1291 | /* FIXME: Using pci= for an ACPI parameter is a travesty. */ | |
1292 | static int __init parse_pci(char *arg) | |
1293 | { | |
1294 | if (arg && strcmp(arg, "noacpi") == 0) | |
1295 | acpi_disable_pci(); | |
1296 | return 0; | |
1297 | } | |
1298 | early_param("pci", parse_pci); | |
1299 | ||
1300 | #ifdef CONFIG_X86_IO_APIC | |
1301 | static int __init parse_acpi_skip_timer_override(char *arg) | |
1302 | { | |
1303 | acpi_skip_timer_override = 1; | |
1304 | return 0; | |
1305 | } | |
1306 | early_param("acpi_skip_timer_override", parse_acpi_skip_timer_override); | |
fa18f477 AK |
1307 | |
1308 | static int __init parse_acpi_use_timer_override(char *arg) | |
1309 | { | |
1310 | acpi_use_timer_override = 1; | |
1311 | return 0; | |
1312 | } | |
1313 | early_param("acpi_use_timer_override", parse_acpi_use_timer_override); | |
1a3f239d RR |
1314 | #endif /* CONFIG_X86_IO_APIC */ |
1315 | ||
1316 | static int __init setup_acpi_sci(char *s) | |
1317 | { | |
1318 | if (!s) | |
1319 | return -EINVAL; | |
1320 | if (!strcmp(s, "edge")) | |
5f3b1a8b AS |
1321 | acpi_sci_flags = ACPI_MADT_TRIGGER_EDGE | |
1322 | (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK); | |
1a3f239d | 1323 | else if (!strcmp(s, "level")) |
5f3b1a8b AS |
1324 | acpi_sci_flags = ACPI_MADT_TRIGGER_LEVEL | |
1325 | (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK); | |
1a3f239d | 1326 | else if (!strcmp(s, "high")) |
5f3b1a8b AS |
1327 | acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_HIGH | |
1328 | (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK); | |
1a3f239d | 1329 | else if (!strcmp(s, "low")) |
5f3b1a8b AS |
1330 | acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_LOW | |
1331 | (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK); | |
1a3f239d RR |
1332 | else |
1333 | return -EINVAL; | |
1334 | return 0; | |
1335 | } | |
1336 | early_param("acpi_sci", setup_acpi_sci); | |
d0a9081b AM |
1337 | |
1338 | int __acpi_acquire_global_lock(unsigned int *lock) | |
1339 | { | |
1340 | unsigned int old, new, val; | |
1341 | do { | |
1342 | old = *lock; | |
1343 | new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1)); | |
1344 | val = cmpxchg(lock, old, new); | |
1345 | } while (unlikely (val != old)); | |
1346 | return (new < 3) ? -1 : 0; | |
1347 | } | |
1348 | ||
1349 | int __acpi_release_global_lock(unsigned int *lock) | |
1350 | { | |
1351 | unsigned int old, new, val; | |
1352 | do { | |
1353 | old = *lock; | |
1354 | new = old & ~0x3; | |
1355 | val = cmpxchg(lock, old, new); | |
1356 | } while (unlikely (val != old)); | |
1357 | return old & 0x1; | |
1358 | } |